摘要:

January 1967 PROCEEDINGS OF THE SOCIETY Vol. 4 No. I FOR ANALYTICAL CHEMISTRY Reports of Meetings ORDINARY MEETING AN Ordinary Meeting of the Society was held at 7 p.m. on Wednesday December 7th 1966 in the Chemistry Department Imperial College South Kensington London S.W.7. The Chair was taken by the President Dr. A. A. Smales O.B.E. F.R.I.C. A lecture on “Organic Polarography in the Determination of Physical Constants” was given by P. Zuman D.Sc. NORTH OF ENGLAND SECTION 4 ~ Ordinary Meeting of the Section was held at 6.15 p.m. on Friday December 2nd 1966 at the Blossoms Hotel Chester. The Chair was taken by the Chairman of the Section Mr. J. F. Clark MSc. A.R.C.S. D.I.C. F.R.I.C. F.R.S.H. The subject of the meeting was “Analyst-You Must Apply Statistics” and the speakers \\-ere A. G.Raker B.Sc. F.I.S. and K. H. Simpson B.Sc. A.R.I.C. WESTERN SECTION ~ I K Ordinary Meeting of the Section was held at 5 p.m. on Monday November 21st 1966 at the Welsh College of Advanced Technology Cathays Park Cardiff. The Chair was taken by the Vice-chairman of the Section Dr. T. G. Morris A.R.C.S. B.Sc. A.K.I.C. D.I.C. A lecture on “Polarography in Organic Chemistry” was given by P. Zuman D.Sc. A JOINT Meeting of the Section with the South Wales Section of the Royal Institute of Chemistry was held at 5 p.m. on Friday December 9th 1966 at University College Swansea. The Chair was taken by the Chairman of the South Wales Section of the Royal Institute of Chemistry Dr. H. E. Hallam. The following paper was presented and discussed “Mass Spectrometry,’’ by R. I. Reed D.Sc. P1i.D. The meeting was preceded at 2.30 p.m.by a visit to the Laboratories of the University College. MIDLANDS SECTION Ax Ordinary Meeting of the Section was held at 6.30 p.m. on Friday December 9th 1966 in Lecture Theatre H2/5 Hill’s Block Chemistry Department The University Birmingham. The Chair was taken by the Chairman of the Section Mr. W. T. Elwell F.R.I.C. The following papers were presented and discussed “Cellar Waters and their Analysis as an Aid to the Determination of their Origin,’’ by A. H. Coombes B.Sc. F.R.I.C.; “The Analysis of Potable Water,” by S. S. Parker B.Sc. MICROCHEMICAL METHODS GROUP THE fifty-sixth London Discussion Meeting of the Group was held a t 6.30 p.m. on Wednesday November 30th 1966 at “The Feathers,’’ Tudor Street London E.C.4. The Chair was taken by the Chairman of the Group Mr.R. Goulden F.R.I.C. A discussion on “Complexometric Methods of Analysis” was opened by Professor T. S. West Ph.D. D.Sc. F.R.I.C. 2 CARBON HYDROGEN AND NITROGEN ANALYZERS [Proc. Soc. A d y t . Chem. SPECIAL TECHNIQUES GROUP THE twenty-second Annual General Meeting of the Group was held at 7 p.m. on Tuesday November 22nd 1966 in Chemistry Lecture Theatre C Imperial College Imperial Institute Road London S.W.7. The Chair was taken by the Chairman of the Group Dr. G. F. Reynolds M.Sc. Ph.D. F.R.S.H. F.R.I.C. The following appointments were made for the ensuing year Chairman-Dr. G. F. Reynolds. Vice-Chairinan-Dr. T. L. Parkinson. Honorary Secretary and Treasurer-Mr. S. Greenfield Research Department -4lbright & Wilson (Mfg.) Ltd. P.O. Box No. 3 Oldbury Birmingham. Menzbers of Committee-Mr. B. B. Rach Mr. E. G. Cummins Dr. G. F. Kirkbright R4r. R. J. RIesley Dr. A. K. Moss Mr. R. P. Taubinger (co-opted) and Mr. D. E. Winsor. C. Isbell and Mr. S. G. E. Stevens were re-appointed as Honorary Auditors. The Annual General Meeting was followed by the 110th Ordinary Neeting of the Group a t which a lecture on “The Analysis of Paper Chromatograms Csing Automatic Techniques and a Digital Computer” was given by A. A. Boulton B.Sc. Ph.D. RIr. K.

ISSN:0037-9697    

DOI:10.1039/SA9670400001

出版商:RSC    

年代:1967

数据来源: RSC

摘要:

2 CARBON HYDROGEN AND NITROGEN ANALYZERS [Proc. SOC. izaZ_vt. Chem. Fully Automatic Apparatus for the Determination of Carbon Hydrogen and Nitrogen in Organic Compounds The following are summaries of papers presented at a Joint Xeeting of the Microchemical Methods and Automatic Methods Groups held on July l s t 1966 and reported in the August 1966 issue of Proceedings (p. 127). The Aminco Carbon Hydrogen Analyser BY R. UNCLES (V. A . Howe and Co. Ltd. 46 Pembvidge Road Lopidoit TL7.11) THE instrument developed by the American Instrument Cornpan\- is essentially 1-er-j. simple and involves only the use of High-School level chemistry. Despite its elementary approach it is nevertheless a useful analytical tool of unrivalled speed and good accuracy. The small sample requirement and easy operation make i t ideal for a wide range of applications from structure studies of organic and biochemical products to process control work.The operation of the equipment is as follows. Pure dry oxygen (dew-point -70" C) is passed at a pressure of 45 p.s.i. into the equipment through one arm of a thermal con- ductivity bridge and then into the combustion zone. The combustion chamber consists of a fused silica combustion tube packed with copper oxide and maintained at 1000" C. *in amount of sample equi\ralent to about 0-2 mg of carbon is encapsulated in a light-weight aluminium tube and introduced into the combustion zone 1Tia a specially deqigned port that permits sample introduction without interruption of the ox>-gen flow. The high temperature of the furnace coupled with the high pressure oxygen atmosphere and the copper oxide catalyst ensure virtually instantaneous oxidation of all but the least volatile materials (e.g.some hard coals and graphite for which a slightly different technique must be used). The resultant combustion products are carried through the rest of the apparatus with the oxygen supply as the carrier gas. The water produced as a result of the combustion is absorbed in a silica gel tube leaving the carbon dioxide to be carried into the measuring side of the bridge where the resultant change of thermal conductivity is detected and displagTed on a recorder. When the carbon dioxide has been swept through the system a small heater operating at 250" C is brought up to surround the silica gel and drive off the absorbed water. The water passes through a tube packed with calcium hydride quantitativelj- producing hydrogen which in turn is carried into the detector where the change of thermal conductivity is measured and displayed on the recorder.By choosing a suitable standard for example benzoic acid the equipment can be rapidly calibrated and the carbon and hj'drogen content assessed by direct comparison of the peak heights of the sample and standard. In principle the area under the peak should of course be integrated. Howewr if the oxidation of the sample and standard is rapid as the conditions in the instrument ensure in January 19671 CARBON HYDROGEN AND NITROGEN ANALYZERS 3 all but the least volatile samples peak height measurements will give a precision of about 0.2 per cent. For slow burning samples if peak height measurements are to be made a standard with similar burning characteristics to those of the sample must be used.If the equipment is to deal effectively with a wide range of samples precautions must be taken to deal with any interfering elements likely to be present in the sample. Halogens sulphur phosphorus and oxides of nitrogen all have significantly different thermal conduc- tivities from the carrier gas oxygen and would consequently modify the height of the carbon dioxide peak. A magnesium oxide layer in the middle of the combustion zone removes fluorine and a silver-wool plug in a cooler part of the tube will remove chlorine iodine and bromine and also any sulphur or phosphorus compounds resulting from the combustion of the sample. Oxides of nitrogen are removed a little later in the train with manganese dioxide.Flow-meter - Detector - Orifice - Pressure- regulator Delay column- Oxygen in Oxygen out Manganese dioxide 4 1 Sample introduction port I - Heat reflector Combustion tube - IO00"C furnace 'Magnesium oxide Copper oxide Silver wool - 1 I Fig. 1. Flow diagram for the Amiiico Carbon Hydrogen Analyser The mechanical construction of the equipment is good and well designed with easy access to all components that have to be replaced or re-charged. The calcium hg'dride tube which has to be re-packed every 5 to 12 determinations depending on the hydrogen content of the sample is held in position by a spring-loaded bar and can be replaced in a fen. seconds. All other components such as the combustion tube and silica gel tube are secured by high temperature O-ring seals.A delay column is incorporated in the system before the measuring side of the detector to minimise the effect on the detector of transient pressure changes caused when the sample is introduced when combustion takes place and when the absorbed water is liberated from the silica gel. The whole instrument is compact and onl>- requires about 3 sq. feet of bench space for mounting with the specially modified recorder with which the unit is normally supplied. The greatest virtue of this instrument is without doubt the speed of a determination- only 90 seconds for each sample or standard. This coupled with its extreme simplicity ease of use good precision and relatively low cost make it a most interesting piece of equipment. 4 CARBON HYDROGEN AND NITROGEN ANALYZERS [Proc.Soc. ,4naZyt. Chem. The F 63 M Model 185 C-H-N Analyzer BY P. COSKERY ( F & M ScientiBc Hewlett-Packavd Ltd. 40-48 High Stveet Acton London W.3) THE F & M Model 185 is based on the Dumas technique modified to provide an optimum sample - oxidant contact for combustion under static conditions. The products of com- bustion are automatically confined to a closed-loop chamber within the instrument until the reaction is complete and then are introduced into a gas-chromatographic system where they are separated for measurement. Oxidation and reduction are carried out in separate furnaces each heated to an optimum temperature. The instrument incorporates a Cahn electrobalance which is coupled to a solid-state recorder with a dead-band of 0.1 per cent. The coupling is via a ratio-recording system which sensitises the recorder to the sample weight the resultant peaks are proportional to the concentration of the carbon hydrogen and nitrogen only; transfer of weight data is therefore eliminated.The sample is weighed into a small aluminium boat which is transferred to an injection rod and the sample is covered with an oxidation catalyst. The sample is introduced into the oxidation furnace and an illuminated button is pressed. The system is now completely automatic and after several minutes three peaks are obtained from the recorder. Calculation involves measuring the peak heights obtained and comparing these with the peaks obtained from a pure microanalytical standard. The complete analysis takes about 13 minutes from start to finish. The performance of the Model 185 has been thoroughly tested in over 200 laboratories throughout the world.The evidence proves that it is capable of a routine accuracy for the complete elemental analysis well within the microchemist’s accepted allowable erroi- of &0-3 per cent. In a series of 52 samples of all types submitted “blind” by interested microchemists across the United States the over-all standard deviation of duplicated analj-ses performed on the instrument was 0.15 per cent. for carbon 0-12 per cent. for hydrogen and 0.19 per cent. for nitrogen. Recent work on the analysis of materials such as coal and soil with up to 100-mg samples has been encouraging. The advantages of the F & M Model 185 over classical procedures are as follows. Carbon hydrogen and nitrogen can be determined simultaneous1 .The analysis time is short less than 15 minutes per sample and operator fatigue A technician can be trained to use the instrument accurately in 2 to G days. No special environment is required. No prior knowledge is required about the nature of the sample; all conditions of As the analysis is largely automatic the possibility of operator error is minimal. A permanent record is obtained; if a mistake is made in the arithmetic it can be corrected later. Apart from the recorder and the Cahn electrobalance there are only four mo\ring parts. Plans are well advanced to make available modifications for the determination of organic is minimal. analysis are standard. oxygen and sulphur. The Perkin-Elmer Model 240 Elemental Analyzer BY D. C. KNOWLES (Pevkin-Elmer Ltd. Beaconsfield Buclts.) FOR several years Perkin-Elmer has been engaged in developing an instrument to measure accurately the carbon hydrogen and nitrogen content of organic compounds.The wide experience gained in the manufacture and operation of gas-chromatographic apparatus January 19671 CARBON HYDROGEN AND NITROGEN ANALYZERS 5 quickly established that the gas-chromatographic approach in itself was not the best solution to the problem as the products of combustion are extremely difficult to separate completely. Moreover to avoid overload of the column and detector the sample size must be kept sub- stantially below 1 mg so that an ultramicrobalance was required to permit weighing to the necessary 40.1 per cent. accuracy. Furthermore all peaks must be kept on-scale to permit their heights or areas to be measured thus restricting the readability of the system to the full scale of the recorder.The Perkin-Elmer Model 240 Elemental Analyzer is based on the original work of Pro- fessor w. Simon P. F. Sommer and G. H. Lyssy (Microchem. J. 1962 6 239) and is charac- terised by static combustion in a pure oxygen atmosphere. The combustion products are analysed automatically in a self-integrating steady-state thermal conductivity analyser and the results are presented in a bar-graph form on a strip-chart recorder. The combustion train and the analytical system are shown in a simplified form in Fig. 1. Helium is used to carry the combustion products from the combustion train through the analytical system to the atmosphere. Gas flows are determined by solenoid valves A to G controlled by a cam-operated programmer.Between analyses the instrument is in a standby condition with valves A D and F open and helium flowing at a low rate through the system and out via the nitrogen detector. A 1 to 3-mg sample is weighed in a platinum boat the boat placed in a quartz ladle and the ladle inserted into the cool zone of the combustion tube. The programme is started and the entire system is flushed with helium at a high rate for 90 seconds after which the combustion train is flushed with oxygen for 30 seconds. The programme then stops until the operator moves the sample into the combustion zone and presses the “combust” button. The analysis is then fully automatic and with the exception of the output attenuators requires no more attention from the operator.The programme mav be “held” at any time which is useful when a longer combustion time is desired. Fig. 1. Combustion train and analytical system of the Perkin-Elmer Model 240 Elemental Analyzer Combustion occurs under static conditions in an excess of oxygen at about 900” C. The reduction furnace at 650” C reduces any oxides of nitrogen to nitrogen and removes any residual oxygen from the combustion train. Towards the end of the combustion period the combustion products are completely flushed into a 300-ml spherical glass mixing vessel. When the pressure in the vessel reaches 1,500 mm of mercury the pressure switch at the outlet of the mixing volume causes valve D to close and the contents of the volume remain there for 90 seconds during which time they become a homogeneous mixture.6 CARBON HYDROGEN AND NITROGEN ANALYZERS [Proc. SOC. AnaZyt. Chem. While the sample gases are mixing pure helium from valve C flows through the sampling loop and the detectors and the recorder-chart drive is actuated. The signal from each detector-bridge circuit is recorded for 20 seconds to provide a “zero” indication with no sample in the detector. When mixing is complete valves F and G open to allow the mixture to expand through the 175-ml sample volume to the atmosphere. Valve G then closes and valve C opens and the helium displaces the sample gas through the detector system. Three pairs of thermal conductivity cells are used in series for detection one pair each for water carbon dioxide and nitrogen. The tungsten filaments of each cell pair are connected differentially in a bridge circuit so that any difference in the contents of the two cellswill result in an electrical signal.A magnesium perchlorate trap between the first pair of cells absorbs any water from the gas mixture before it enters the second cell so that the signal obtained is proportional to the amount of water removed. Similarly a soda asbestos trap between the second pair of cells results in a signal in proportion to the carbon dioxide removed from the sample. The last pair of cells detects nitrogen by comparing the helium - nitrogen mixture with pure helium. The output signals from the bridge circuit are applied through adjustable attenuators for nitrogen and hydrogen and through a signal suppression network for carbon on to a 0 to 1-mV potentiometric recorder. The programme takes 13 minutes and at its conclusion the system returns to the standby condition; the boat can then be removed for weighing any residue after 6 minutes.In designing an instrument to work to the required levels of accuracy each source of error was examined as to its contribution to the total. ,4 standard deviation of l o is required and achieved at j O . 1 per cent. accuracy and results from many hundreds of samples have shown that the precision of 50.3 per cent. at the 30 probability level (97 per cent. confidence) is being maintained. In conclusion therefore the Model 240 retains the proven Pregl - Dumas combustion - reduction system with samples in the 1 to 3-mg weight range. The use of a steady-state read-out eliminates the tedious weighing of absorption traps and improves the speed and ease with which measurements on the products of combustion are made.I t is evident that samples that can be analysed by conventional techniques may be analysed rapidly and automatically by the instrument and that an operator capable of weighing and treating samples correctly will obtain satisfactory results. The Technicon Ultramicro C-H-N Analyzer BY R. ROTHWELL ( T h e Teclavzicon Instvuineizts Co. L f d . Claevtsey Suvvey) THE Technicon Ultramicro C-H-N Analyzer is based on i\,T'alisch's method (Chem. Ber. 1961 94 2314) for the simultaneous determination of carbon hydrogen and nitrogen in organic compounds. The dynamic system used in the method is as follows. Between 100 and 800 ,ug of the sample are burned in a stream of helium and 3 per cent. of oxygen and the products of combustion (carbon dioxide nitrogen and water) are swept through a small tube containing silica gel which retains the water.The carbon dioxide - nitrogen mixture in helium is passed to a catharometer cell and the output signal is fed to an integrator fitted with a digital counter the reading of which corresponds to carbon dioxide plus nitrogen. The gas stream is then passed through a carbon dioxide absorption tube so that only the nitrogen (in helium) passes into the second catharometer cell. The circuit is so arranged that the counter reverses direction and the next reading corresponds to carbon dioxide only. The counter is then reset to zero the silica gel section is heated electrically and the desorbed water is swept through the catharometer so that a counter reading for water is obtained.The complete cycle takes between 11 and 134 minutes. As all compounds have different burning characteristics the shapes of resulting peaks vary. The heights of the peaks are therefore not measured but integrated to obtain the areas under these peaks. The nitrogen reading is calculated by difference. January 19671 CARBON HYDROGEN AND NITROGEN ANALYZERS 7 Important features of the dynamic system are speed certainty of combustion repro- ducibility versatility and ease of operation that can be achieved. Only a single point calibra- tion is required and satisfactory results can be obtained on samples over the range 25 to 85 per cent. of carbon; 2 to 10 per cent. of hydrogen; and 5 to 70 per cent. of nitrogen. Simplicity in the combustion apparatus can be obtained with this sytem in which no solenoid valves pumps or timing devices are present which if they failed could all lead to positive errors.Fig. 1. Flow diagram for the Technicon IJltramicro C-H-N Analyser Ry using a dynamic system it is possible to observe the course of the combustion for the first time in elemental analysis. If the combustion proves “difficult” particularly with refractory materials i.e. if the sample is incompletely combusted it is immediately shown by a “tailing” effect on the counter i.e. the counter does not come to rest between readings or alternatively the needle on the micro-ammeter does not return to zero and this can be remedied by increasing the temperature of the combustion zone or by using a smaller weight of sample in the test. In this system in which no catalytic agent is used residues remaining after combustion can be determined accurately.Mr. Rothwell described his own experiences in carrying out an assessment of the Technicon C-H-N Analyzer over 5 months while employed with Imperial Chemical Industries Ltd. Dyestuffs Division. Good results had been obtained on a wide range of dyes many of which had been considered “difficult” by conventional methods but had caused no difficulty in analysis on the Technicon C-H-N Analyzer. He considered that only the dynamic system would allow and seemed capable of expansion into a series of other techniques. The apparatus and techniques involved in the anal)-sis of liquid samples hygroscopic samples and increased sample size reported by \Y. \Valisch G. Scheuerbrandt and W. Marks (hficrochei+z. J.1966 11 315) had now been developed by the Company. The technique used to fill the quartz capillaries even with extremely volatile liquids takes little more than 1 minute. The air cushion between the liquid and the exit of the capillary tube effectively prevents any evaporation losses and the sample is combusted in the usual way. The only problem in the analysis of hygroscopic samples is the weighing pro- cedure; the “piglet” technique can not be used as the tare weight on the Mettler UM7 balance does not allow the use of such a tube. A small drying device was shown and the method used for the simple procedure in weighing hygroscopic samples explained by R4r. Rothwell. Extremely accurate results on hygroscopic samples are obtained with this technique. The sample range can be extended and from the graphical representation of records of catharometer voltage - time it was explained that by introducing the special bulb tube 8 CARBON HYDROGEN AND NITROGEN ANALYZERS [ h o c .SOC. Analyt. Chew. between the reduction tube and the silica gel tube a dilution effect is obtained the gas concentration is lowered sufficiently back diffusion is prevented by the capillaries between the tubes and a double sample size produces a peak as high as before but much wider. The effect of the bulb tube extends the sample range of the Analyzer by a factor of 2 and as the absolute errors remain constant extremely accurate values for carbon hydrogen and nitrogen can be obtained. Future developments include a method for determining oxygen with this apparatus. Oxygen can be determined in 12 minutes with a combustion tube containing carbon main- tained a t 1120" C.The measurement is made by converting the oxvgen to carbon dioxide which is measured in the usual way. The Technicon Analyzer could therefore be used one day for determining carbon hydrogen and nitrogen and the following day for determining oxygen. Demonstration Session Laboratory space was provided for the demonstration of all four instruments but not all of the exhibitors gave working demonstrations. Before the meeting each exhibitor had been given samples of six Organic Analytical Standard substances identified by number only. A working demonstration was given but owing to a mishap the standard samples were not analysed during the afternoon and the exhibitors did not find it possible t o analyse the samples subsequently.THE AMINCO CARCON HYDROGEN i4XALYSER- THE F & M MODEL 185 C-H-N AN.4LYZER- The results shown below were obtained during the afternoon session under exhibition conditions. THE PERKIN-ELMER MODEL 240 ELEMENTAL AXALYZER- Because of difficulties in transit the instrument did not arrive in time to be assembled and tested. The results given below were obtained subsequently in the manufacturer’s own laboratory. THE TECHNICON ULTRAMICRO C-H-N ANALYZER- The Technicon Instrument Company Ltd. stated that the Mettler UM7 balance would not work satisfactorily under the conditions available but they gave Lvorking demonstrations on a second instrument permanently housed in the Micro-Analytical Department of Imperial College. The results given below were obtained before the meeting in their own laboratory.Sample rc Theory Found 185 F&MModel {k Perkin-Elmer { Model 240 Technicon C-H-N Analyzer I I I N I RE5ULTS OBTAINED FOR SIX STAND.%RL) SAMPLES S-Benzyl- Naphthalene,* -4tropine Phenacetin aniline chloride $-Nitro- thiouronium per cent 93-71 6.29 - 93.6 6.2 93-64 6.2 1 92.79 92.92 6.19 6.24 - - per cent. 70.56 8.01 4.84 70.8 8.0 5.1 70.44 8.08 4.89 70-54 70.47 70.62 7.52 7-55 7.80 4.38 4.46 4.62 per cent. 67-02 7-31 7-82 67.4 7 - 3 8.0 67.16 7.38 7.90 66.72 66.81 7.22 7.32 7.70 8.06 - - - per cent. 52.17 4.38 20.28 52.3 4.4 20.3 51.99 4.38 20.26 52.09 52.16 4.35 4.28 20.14 20.16 - - - per cent. 47.40 5.47 13-82 47.5 5.5 13.9 47.68 5.56 13-62 47.57 47.61 5 2 9 5.35 13-55 13.69 - - - Triphenyl- phosphine per cent. 82.42 5.76 - 82.6 5.5 82.337 5.67 82.13 82.27 5.78 5.77 - - - - - - - * Both Technicon and F & M had trouble with this sample apparently owing to its volatility. Sample was covered with WO and given a prolonged combustion. January 1967 PUBLICATIONS RECEIVED Changes in the Register of Members DEATH George James. WE record with regret the death of 9

ISSN:0037-9697    

DOI:10.1039/SA9670400002

出版商:RSC    

年代:1967

数据来源: RSC

摘要:

THE SOCIETY FOR ANALYTICAL CHEMISTRY Reports of the Analytical Methods Committee Reprints REPRINTS of the following reports are now available from The Secretary The Society for Analytical Chemistry 14 Belgrave Square London S.W.1. Price to members 1s. 6d. each ; to non-members 2s. 6d. each. Report prepared by the Meat Products Sub-Committee “Nitrogen Factor for Kidney,” reprinted from The Analyst August 1966 91 538-539. Report prepared by the Fish Products Sub-committee “Nitrogen Factor for Cod Flesh,” reprinted from The Analyst August 1966 91 540-542. Report prepared by the Prophylactics in Animal Feeds Sub-committee “The Deter- mination of Acinitrazole,” reprinted from The Analyst October 1966 91 672-675. Reports of the Analytical Methods Committee are only available from The Secretary (not through Trade Agents) and remittances made out to The Society for Analytical Chemistry MUST accompany orders.Forthcoming Meetings-continued Tuesday 21st SPECIAL TECHNIQUES GROUP. LONDON “Photo-electron Spectroscopy a Method for the Direct Experimental Investi- Imperial College South Kensington London S. W. 7 ; 7 p.m. WESTERN SECTION jointly with the Cardiff and District Section of the Royal gation of Molecular Orbital Energy Levels,” by D. W. Turner. Wednesday 22nd c x RD IFF Thursday 23rd BIRMINGHAM Friday 24th DUXDEE Tuesday 28th March Friday 3rd LONDOX Institute of Chemistry and the Society of Chemical Industry. “The Chemical Examination of Paintings,” by A. E. ,4. Werner. University College Cardiff; 7 p.m. MIDLANDS SECTION. “Conditions for Analytical Applications of Organic Polarography ” by Dr.P. Chemistry Department Hills Lecture Theatre H2/5 The University SCOTTISH SECTION. “The Application of Physical Techniques to Chemical Problems of Structure and Analysis,” by M. St. C. Flett. Queen’s College Dundee; 4.30 p.m. THIN-LAYER CHROMATOGRAPHY GROUP. Details to be announced later. Zuman. Edgbaston Birmingham 15; 6.30 p.m. SOCIETY A.G.M. followed by the Address of the Retiring President Dr. A. A. Meeting Room of the Royal Society Burlington House London W. 1 ; Evening Biennial Formal Dinner. Fishmongers’ Hall London Bridge London E.C.4; 7.30 p.m. for 8 p.m. Smales O.B.E. F.R.I.C. 2.15 p.m. January Thursday 26th BRISTOL Friday 27th GLASGOW Saturday 28th LIVERPOOL February Wednesday 1st LONDON Tuesday 7th LEICESTER Wednesday 8th LONDON Wednesday 15th LONDON Wednesday 15th NEWCASTLE Wednesday 15th CARDIFF Thursday 16th LONDON THE SOCIETY FOR ANALYTICAL CHEMISTRY Forthcoming Meetings WESTERN SECTION Annual General Meeting followed by an Ordinary Meeting “Applications of Electrophoresis and Immunoelectrophoresis in Clinical The University Bristol; 5.30 p.m.SCOTTISH SECTION Annual General Meeting. Glasgow; 1.45 p.m. NORTH OF ENGLAND SECTION Annual General Meeting followed by the Address of the Retiring Chairman J . F. Clark M.Sc. A.R.C.S. D.I.C. F.R.I.C. F.R.S.H. Lecture Theatre City Laboratories Mount Pleasant Liverpool ; 2.30 p.m. (Please note change of venue). jointly with the Rristol Section of the Royal Institute of Chemistry. Biochemistry,” by J . W. Keyser. SOCIETY (organised by the Microchemical Methods Group) Meeting on “Detection and Determination of Small Quantities of Material.” Speakers C.Whalley B.Sc. F.R.I.C. and R. Gouldcn F.R.I.C. Imperial College South Kensington London S.W. 7 ; 7 p.m. MIDLANDSECTION and THERMAL ANALYSIS GROUP jointly with the East Midlands Section of the Royal Institute of Chemistry and the Leicester University Chemical Society on “Thermal Analysis. ” Speakers C. J . Keattch F.R.I.C. and B. Riley. Chemistry Department The University Leicester ; 7 p.m. Atomic-Absorption Spectroscopy Group jointly with the Institute of Physics Spectroscopy Group on “The Processes and Instrumentation in Atomic- absorption Spectroscopy.” Science Museum South Icensington London S.lV.7 ; 2 p.m. RADIOCHEMICAL METHODS GROUP. “The Basic Principles of Dilution Analysis Activation Analysis Derivative Analysis Saturation Analysis and Inimuno-assay in a Medical Context,” by E.S. Williams Ph.D. “The Use of Radioactive Markers in the Study of Mineral hfetabolism with Special Reference to the Alkaline Earths,” by G. E. Harrison D.Sc. F. 1nst.P. The Borough Polytechnic Borough Road London S.E. 1 ; 6.30 p.m. KORTH EAST SECTION jointly with the Newcastle upon Tyne Section of the “Modern Methods of Analysis,” by J . TS7hitehead B.Sc. F.K.I.C. The University Newcastle upon Tyne ; 6.30 p.m. WESTERN SECTION and PARTICLE SIZE ANALYSIS GROUP on “Microscopic Speakers V. Timbrel1 and D. J . Causley. School of Pharmacy Welsh College of Advanced ’Technology Cathays Park BIOLOGICAL METHODS GROUP on “The Microbiological Determination of the Speakers will include J . E. Ford W. S. Miller and J . A. Stott. Pharmaceutical Society 17 Bloomsbury Square London W.C. 1 ; 2.30 p.m. [continued inside back covey Roy a1 Ins ti tu te of Chemistry. Techniques. ” Cardiff; 6 p.m. Nutritive Value of Proteins.” Printed by W Heffer & Sons Ltd Cambridge England

ISSN:0037-9697    

DOI:10.1039/SA96704BX003

出版商:RSC    

年代:1967

数据来源: RSC

摘要:

January 1967 PUBLICATIONS RECEIVED 9 Publications Received The publications listed below have been received by the Editor of The Annljlst in which journal Book Reviews will continue to appear. By FRITZ FEIGL ENG. D.Sc. and DR. VINZEXZ AKGER. Translated by RALPH E. OESPER PH.D. Seventh English Edition. Pp. xxiv + 772. Amsterdam London and New York Elsevier Publishing Company. INDUSTRIAL CHEMISTRY-INORGANIC ORDINARY AND ADVANCED LEVELS. By D. ill. SAMLTL H.Sc. A.R.I.C. Pp. vi + 46. London The Royal Institute of Chemistry. 1966. Price 7s. 6d. Translated by GYULA SVEHLA. Yp. ix + 419. Oxford London Edinburgh New York Toronto Paris and Frankfurt Perganion Press. 1966. Price 120s. ALFRED ~VERNER FOUNDER OF COORDINATION CHEMISTRY. Pp. xvi + 127. Berlin Heidelberg and New York Springer-Verlag.1966. Price DM 24. METHODS OF BIOCHEMICAL ANALYSIS. Volume 14. Edited by DAVID GLICK. Pp. x + 562. New York London and Sydney Interscience Publishers a division of John Wley & Sons Inc. 1966. Price 113s. SPOT TESTS IN ORGANIC ANALYSIS. 1966. Price 170s. HISTORY OF ANALYTICAL CHEMISTRY. By FERENC SZABADVARY. By GEORGE B. KAUFFMAN. 10 PUBLICATIONS RECEIVED [Proc. SOC. Analyt. Chem. BIOCHEMICAL PREPARATIONS. Volume 11. Editor ANDREAS C. MAEHLY. Pp. xii + 147. New York London and Sydney John T;liiley & Sons Inc. MODERN TRENDS IN ACTIVATION ANALYSIS. Proceedings of the 1965 International Conference a t College Station Texas U.S.A. April 19-22 1965. Pp. 390. Texas A 13 Ril University Press. 1965. Price $15; 128s. BIOORGANIC MECHANISMS. Volume 11. By THOMAS C. BRUICE and STEPHEN J .BEKKOVIC. Pp. viii + 419. New York and Amsterdam W. A. Benjamin Inc. 1966. Price $23.00. xxiv + 419. London and New York Academic Press. 1966. Price 90s.; S15.00. PROGRESS IN THE CHEMISTRY OF FATS AND OTHER LIPIUS. Volume 9. FOLYVNSATURATED ~ C I D S . Part 1. Edited by RALPH T. HOLMAN. Pp. iv + 157. Oxford London Edinburgh New York Toronto Sydney Paris and Braunschweig Pergamon Press. 1966. Price 50s. ; $7.75. By D. D. PERRIN W. L. F. ARMAREGO and DAWK R. PEKRIN. Oxford London Edinburgh New York Toronto Paris and Braunschweig Pergamon Press. 1966. Price 70s. KIRK-OTHMER ENCYCLOPEDIA OF CHEMICAL TECHNOLOGY. Volume 9. Second Edition. FERRO- ELECTRICS TO FOAMS. Edited by HERMAN F. MARK JOHN J . MCKETTA jun. DONALD F. OTHMER and ANTHONY STANDEN. New York London and Sydney John Wiley & Sons Inc.Price f[lS 18s.; price per volume for subscribers to the complete set of 18 volumes L13. CHEMIE. Part l b ALLGEMEINE ARBEITSTECHNIK 11. Part l c ALLGENEIXE ARBEITSTECHNIK 111. Braunschweig Germany Vieweg & Sohn. 1966. Price DM 5.90. PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY. Volume 1. Edited by J . W. ERISLEY J . FEENEY and L. H. SUTCLIFFE. Oxford London Edinburgh Sew York Toronto Sydney Paris and Braunschweig Pergamon Press. 1966. Price 105s. Bq+ ARTHUR I. VOGEL D.Sc. D.I.C. F.R.I.C. Second Edition. Pp. xvi + 431. London Longmans Green and Co. Ltd. 1966. Price 35s. ELECTRON DIFFRACTION TECHNIQUES AND THEIR APPLICATIONS TO THE STUDY OF SURFACE STRUCTURE. By RAYMOND K. HART. LIQUID SCINTILLATOR SOLUTIONS IN NL-CLEAR PHYSICS AKD NUCLEAR CHEMISTRY By DONALD L.HORROCKS. IN-LINE ANALYTICAL INSTRUMENTA- TION OF NUCLEAR FUEL REPROCESS~NG PLANTS By C. K. ~LICGOWAN and J . K. FOREMAN. PART 11 TABLES OF X-RAY DATA By R. D. DEWEY R. S. NAPES and T. IT’. Reynolds. 1966. Price 60s. LABORA4TORY HANDBOOK FOR OIL AND FAT ANALYSTS. By L. 1‘. COCKS and c. VAN REDE. I’p. PURIFICATION OF LABORATORY CHEMICALS. Pp. viii + 362. Pp. xvi + 901. 1966. STXSDARDMETHODEN DER PRAKTISCHEN CHElLIIE PRAPARATIVE METIIODEN DEN OKGANISCHEN Pp. viii + 52 and viii + 50. (Loose leaf). Pp. viii +- 386. ELEMENTARY PRACTICAL ORGANICHEMISTRY PART 2 QUAL~TATIVE ORGANIC I~NALYSIS. P A R T 1 A. TABLE OF COEFFICIEXTS FOR THE hIICROPROBE AKALYST By R. n. DEWEY. ‘THE ION MICROPROBE MASS SPECTROMETER By A. E. BARRINGTON R. F. K. HERZOG and \T7. P. POSCHENRIEDER. PROGRESS I N XUCLEAR ESERGY SERIES 1x ANALYTICAL CHERI- ISTRY.Volume 7. Edited by H. A. ELTON and D. C. STEWART. Pp. vi + 288. Oxlord London Edinburgh New York Toronto Sydney Paris and Braunschv eig Pergamon Press. 1966. Price 90s. Second Revised Edition. Oxford London Edinburgh New York Toronto Sydney Paris and Braunschweig Pergamon Press. (2.4s PHASE ~ ~ E A C T I O N RATE THEORY. By HAROLD S. JOHNSTON. Pp. s + 362. Kew 1-ork The Ronald Press Co. 1966. Price $10.00. METHODS IN CHEMICAL AND MINERAL MICROSCOPY. By Essxai E. EL-HISNAWI Ph.11. Pp. x + 222. Amsterdam London and Xew Work Elsevier Publishing Co. 1966. Price 90s. ACTIVATION ANALYSIS WITH CHARGED PARTICLES. By 13. S. TILBURY. Pp. vi + 43. New I’ork Springfield Clearinghouse for Federal Scientific and ’Technical Information Sational Bureau of Standards U.S. Department of Commerce. 1966. Price $1.00. THIK-LAYER CHROMATOGRAPHY. By KURT RANDERATH. Translated by D. D. LIBYAN. Second Revised Edition. Pp. xiv + 285. Weinheim/Bergstr \-erlag Chemie GmbH. New York and London Academic Press. 1966. Price 38s. ATOMIC-ABSORPTION SPECTROPHOTOMETRY. By W. T. ELWELL and J . A. F. GIDLEY. Pp. xii + 139. Price 42s.

ISSN:0037-9697    

DOI:10.1039/SA967040009b

出版商:RSC    

年代:1967

数据来源: RSC

摘要:

January 19671 NOTICES 11 Notices THE CHEMICAL SOCIETY’S LIBRARY MEMBERS of the Society have the privilege of using the Library of The Chemical Society at Burlington House London W.l. The following 27 publications of analytical interest have been added to the Library since the last list appeared in Proceedings (1966 3 166). Rooks marked with an asterisk have been reviewed in The Analyst. Publishers Co. 1966. METHODS OF VITAMIN ASSAY. 3rd Edition. Association of Vitamin Chemists Inc. Interscience BRITISH NATIOXAL FORMULARY 1966. British Medical Association. 1966. TRANSITION hfETAL CHEMISTRY A SERIES OF ADVANCES. Volume 1. Edited by R. L. Carlin. Edward _4rnold. 1965. THEIR ALLOYS. W. T. Elwell. Pergamon Press. 1966. **AN 4LYSIS O F THE XEW METALS TITANIUM ZIRCONIUM HAFNIUM NIOBIUM TANTALUM TUNGSTEN AND SPOT TESTS IN ORGANIC ANALYSIS.7th Edition. F. Feigl. Elsevier. 1966. TJLTRAVIOLET AND VISIBLE ABSORPTION SPECTRA INDEX FOR 1960-19633. PRINCIPLES OF POLAROGRAPHY. J. Heyrovsky. Academic Press. 1966. IKFRARED SPECTRA OF POLYMERS IN THE MEDIUM AND LONG WAVELENGTH REGIONS. D. 0. Hummcl. APPLIC-~TIONS OF THE MOSSBAUER EFFECT IN CHEMISTKY AND SOLID-STATE PHYSICS. International DRYG TDENTIFICATIOK X SCHEME FOR THE IDEKTIFICATION OF OKGANICHEMICALS USED IN RIEDICIKE MOLECULAR ORBITAL THEORY OF CONJUGATED SYSTEMS. L. Salem. W. A. Benjamin Inc. 1966. HANDBOOK OF DIFFERENTIAL THERMAL ANALYSIS. HISTORY OF A 4 ~ ~ ~ ~ ~ ~ ~ CHEMISTRY. F. Szabadvary. Pergamon Press. 1966. SOLID-LIQUID SEPAR~~TION A REVIEW AND A BIBLIOGRAPHY. Ministry of Technology H.M.S.O. London. EFFECTS OF HIGH ENERGY RADIATION ON INORGANIC SUBSTANCES.American Society for Testing and 1966. BEILSTEIKS HANDBUCH DER ORGANISCHEN CHEMIE. 4th Edition. 3rd Supplement. Yo1. 6 ii. Edited RFILSTEIXS HANDBUCH DER ORGANISCHEN CHEMIE. 4th Edition. 3rd Supplement. Vol. 6 iii. Edited BIOLOGIC -\L STAINS AND STAINING METHODS. 3rd Edition. British Drug Houses. 1966. Ess \YS in BIOCIIERIISTRY. Volume 2. Edited by P. N. Campbell. Academic Press. 1966. IKTRODUCTION TO PRACTICAL HIGH RESOLUTIONUCLEAR ATAGNETIC RESON 4KCE SPECTROSCOPY. n. *L~BORATORY HANDBOOK OF TOXIC ,\GEKTS. 2nd Edition. Edited by C. H. Gray. The Royal Institute H. M. Hershenson. Academic Press. 1966. Interscience Publishers Co. 1966. Atomic Energy ,\gency. 1966. AND PHARMACY. Edited by C. A. Johnson. Pharmaceutical Press. 1966. *ZONE MELTING.H. Schildknecht. Verlag Chemie. 1966. W. J . Smothers. New York Chemical Publishing Co. lnc. 1966. 1966. Materials Committee E-10 on Radioisotopes and Radiation Effects Symposium; Seattle 1965. by G. Boit. Beilstein-Institut. Springer Verlag. 1965. by G. Boit. Beilstein-Institut. Springer Verlag. 1966. Chapman. -1cademic Press. 1966. of Chemistry. London. 1966. CIIE~IISTRV OF TIIE STEROIDS. W. Klyne. Methuen. London. 1966. THE R -\DIOCHEMICAL MANUAL. 2nd Edition. Radiocheniical Centre. almersham. 1966. D I ~ I IONARY OF ORGANIC COMPOUNDS. 4th Edition. Edited by R. Stevens. 2nd Supplement. Eyrc & ELE~IENTARY PR-XCTICAL ORGANIC CHEMISTRY. 2nd Edition. A. I. Yogel. Volume 1. Longmans SPECTROSCOPY. D. H. Whiffcn. Longmans. 1966. Spottiswoode. 1966. Green & Co. 1966. INTERNATIONAL UNION OF PURE AND APPLIED CHEMISTRY CONGRESS IN PRAGUE SEPTEMBER 4TH-101 H 1967 THE XXIst International Congress on Pure and Applied Chemistry will be held in Prague from September 4th to loth 1967.Three subjects have been selected which will be dealt with in three Sections- Automation in analytical chemistry Toxicological chemistry and Chemistry of nucleic acid components. The Second Circular of the Congress with full information can be obtained from the Organizing Committee XXIst International Congress of Pure and Applied Chemistry P.O. Box 139 Praha 6-Dejvice Czechoslovakia. Participants who intend to present a paper must make their application not later than March lst 1967; others wishing to attend must apply by May 31st 1967. 12 NOTICES [Proc. SOC. Analyt. Chenz.PURE AND APPLIED CHEMISTRY THE OFFICIAL JOURNAL OF THE INTERNATIONAL UNION OF PURE AND ,APPLIED CHEMISTRY THE joint issues Nos. 1-2 of Volume 11 contain the rules for “Nomenclature of Organic Chem- istry Section C. Characteristic Groups Containing Carbon Hydrogen Oxygen Nitrogen Halogen Sulfur Selenium and/or Tellurium.” In the joint issues Nos. 3-4 of Volume 11 are the Invited Lectures presented a t the VIIIth European Congress on hiolecular Spectroscopy held in Copenhagen Denmark from August 14th to 20th 1965. VOLUME 11 NOS. 1-2 AND 3 4 1965 AND VOLUME 12 NOS. 1-4 1966 Definitive Rules for Section C. Volume 11 although it has been published in 1966 has a 1965 publication date. Volume 12 Nos. 1-4 contains the Special Lectures (Opening lecture Symposium lectures and Main lectures) presented a t the International Symposium on Macromolccular Chemistry held in Prague Czechoslovakia from August 30th to September 4th 1965.A report by the Commission on Macromolecules on nomenclature dealing with steric regularity in high polymers is also included. Pure and Applied Chemistry is published irregularly four issues per volume a t L6 ($18.00) per 17olume. Reprints may be purchased; all enquiries should be addressed to the publishers Butterworths 4 5 Bell Yard Temple Bar London \V.C.2. THE 1 8 ~ ~ PITTSBURGH CONFERESCE THE 18th Pittsburgh Conference on Analytical Chemistry and Applied Spectroscopy and exposition of modern laboratory equipment will be held at the Penn-Sheraton Hotel in Pittsburgh Pennsylvania U.S.A. from March 6th to loth 1967. The Conference is sponsored by the Analytical Chemistry Group of the Pittsburgh Section of the American Chemical Society and the Spectroscopy Society of Pittsburgh.Details of the Conference programme were published in the September 1966 issue of Proceedings. Enquiries concerning accommodation should be sent to Dr. J. I(. Hurwitz Pittsburgh Conference Housing Committee c/o Pittsburgh Convention and Visitors’ Bureau 3001 Jenkins Arcade Pittsburgh Pa. 15222 not later than February 14th 1967. SYMPOSIUM ON PHOTOCHROMISM LETCHWOKTH COLLEGE OF TECHNOLOGY HERTFORDSHIRE &IAY 25TH 1967 THE Letchworth College of Technology in collaboration with The Royal Institute of Chemistry and The Institute of Physics and The Physical Society is arranging a Symposium on “Photochromism” to be held at the College of Technology Letchworth Hertfordshire on May 25th 1967.Papers on the following topics are invited compounds and materials that exhibit photo- chromism and the mechanism proposed to account for it; the methods used for investigating these processes-absorption spectroscopy X-ray methods and electrical measurements ; applications of photochromic materials including Q-switching and optical data storage and sun filters. All correspondence regarding the Symposium should be addressed to The Principal (K JD) College of Technology Letchworth Herts. THE SOCIETY FOR ANALYTICAL CHEMISTRY THE POLAROGRAPHIC SOCIETY A MEETING of the Polarographic Society will be held at the School of Chemistry Univer- sity of Newcastle on Wednesday February 22nd 1967 at 2.30 p.m. ,4mong the papers to be presented will be “Electrode Reaction of Organic Compounds,” and “Formation of Thin Films on Electrodes.” Further details will be available from Mrs B. Lamb Meetings Secretary The Polarographic Society University of Surrey Falcon Road Annexe London S.W.11.

ISSN:0037-9697    

DOI:10.1039/SA9670400011

出版商:RSC    

年代:1967

数据来源: RSC