摘要:

Proceedings of the Society for Analytical Chemistry Proc. SOC. Analyt. Chem. Vol. 6 No. II Pages 195-202 CONTENTS Amalgamation of Chemical Societies in the U.K. . . . . 195 SAC Conference 1971 . . . . 196 J oi nt Pharmaceutical Analysis Reports of Meetings . . . . 196 “Radiofrequency Spectroscopy” 198 Membership Changes . . . . 200 Papers Accepted for The Analyst 200 Publications Received . . . . 201 Notice . . . . . . . . 20 I Announcements . . . . . . 202 Erratum . . . . . . . . 202 Forthcoming Meetings Back cover Group . . . . . . . . I96 November 1969 Vol. 6 No. I I PROCEED I N G S OF November I969 THE SOCIETY FOR ANALYTICAL CHEMISTRY President of the Society T. S. West l i o n . Secretary of the Society W. H. C. Shaw Hon. Treasurer of the Society G. W. C. Milner Hon. Assistant Secretaries of the Society D.I. Coomber; D. W. Wilson Secretary Miss P. E. Hutchinson 9/10 SAVILE ROW LONDON W I X IAF Editor J. B. A t t r i l l Telephone 01-734 3419 Proceedings is published by The Society for Analytical Chemistry and distributed t o all members of the Society and t o subscribers with The Analyst; subscriptions cannot be accepted for Proceedings alone. Single copies may be obtained direct from the Society’s Distribution Agents The Chemical Society Publications Sales Office Blackhorse Road Letchworth Herts. (NOT through Trade Agents) price 0 The Society for Analytical Chemistry Telephone 01-734 6205 5s. post free. Remittances MUST accompany orders. THE SOCIETY FOR ANALYTICAL CHEMISTRY NORTH EAST SECTION AND THE ROYAL INSTITUTE OF CHEMISTRY NEWCASTLE UPON TYNE SECTION Trade Wastes and Industrial Effluents A one-day Joint Symposium will be held on Thursday December 4th 1969 at the Five Bridges Hotel Gateshead Programme on back cover Further details can be obtained from the Honorary Secretary of the North East Section of the Society for Analytical Chemistry J . Whitehead British Titan Products Co. Ltd. Portracli Lane Stockton- on-Tees Teesside.

ISSN:0037-9697    

DOI:10.1039/SA96906FX037

出版商:RSC    

年代:1969

数据来源: RSC

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THE SOCIETY FOR ANALYTICAL CHEMISTRY Forthcoming Meetings-continued Thursday 4th GATESHEAD Friday 5th CARDIFF Tuesday 9th LONDON Wednesday 10th BIRMINGHAM NORTH EAST SECTION jointly with the Newcastle upon Tyne and North East Coast Section of the Royal Institute of Chemistry and the Newcastle upon Tyne Section of the Society of Chemical Industry on “Trade Wastes and Industrial Effluents.” “Control of Pollution,” by R. J. H. Dyson. “Effluent Problems in the Chemical Industry,” by IS. A. Dobson. “The Determination of B.O.D. C.O.D. and Total Carbon Content,” by “Recent Advances in the Field of Water Pollution,” by A. B. Wheatland. “Effluent Problems of a Modern Brewery,” by A. R. Simpson. “Automatic Monitoring and Control of Effluent Treatment,” by G. V. R. Five Bridges Hotel Gateshead; 10 a.m.WESTERN SECTION jointly with the Cardiff and District Sections o f the Royal Institute of Chemistry and the Society of Chemical Industry. “Gel-permeation Chromatography,” by I?. W. Peaker. University College Cathays Park Cardiff; 7 p.m. MICROCHEMICAL METHODS GROUP London Discussion Meeting. Discussion on “C.H.N. Automatic Analyzers,” to be introduced by H. C;. Leicester Lounge Glasshouse Street London W. 1 ; 6.30 p.m. MIDLANDS SECTION Meeting on “The Determination of Fluorine and Speakers J . K. Foreman and P. G. Jeffery. The University Birmingham ; 6.30 p.m. G. M. Woodward. Mattock. I3axter. Fluorides. ’ ’ The Determination of Sterols Society for Analytical Chemistry Monograph No. 2 This Monograph contains six papers on various aspects of the determination of sterols by colorimetric and chromato- graphic methods applicable in many fields Available ONLY from The Society for Analytical Chemistry Book Department 9/ I0 Savile Row London WIX IAF (Not through Jrode Agents) Price 15s.o r U.S. $2.00 Post free A remittance made out to “Society for Analytical Chemistry” should accompany every order. Members of the Society may purchase copies at the special price of Ss. post free. THE SOCIETY FOR ANALYTICAL CHEMISTRE’ Forthcoming Meetings November Tuesday 25th LONDON PAR’rIcLE SIZE ANALYSIS GROUP Annual General Rleeting followed by a meeting on “Presentation of Particle-size Distribution Data.” “Graphical Presentation,’’ by H. Heywood. “The Characterisation of Particulate Systems ” by B. Scarlett. Physics Lecture Theatre Imperial College Prince Consort Road London CHROMATOGRAPHY AND ELECTROPHORESIS GROUP Annual General Meeting “Some Analytical Applications of Isoelectric Focusing,” by J .S. Fawcett. “Serum Protein Heterogeneity Studied by Isoelectric Focusing in Poly- Middlesex Hospital Medical School London W. 1 ; 2.30 p.m. NORTH OF ENGLAND SECTION jointly with the Carlett Park Chemical and “Steric Hindrance in Analytical Chemistry,” by H. M. N. H. Irving. West Cheshire Central College of Further Education Carlett Park; Wirral Wednesday 26th ELECTROANALYTICAL GROUP Inaugural Meeting on “Selective Electrode “Solid State and Glass Electrodes,” by K. Covington. “Recent Developments in Ion-exchange Membrane Electrodes,” by B. Fleet. “Recent Developments in Galvanic Sensors,” by J . Tenygl. Lecture Theatre A Imperial College South Kensington London S.W.7 ; SCOTTISH SECTION jointly with the Andersonian Chemical Society.“The Impact of Instrumental Methods on Organic Analysis,” by A. G. Jones. University of Strathclyde Glasgow ; 4 p.m. S.W.7; 6.30 p.m. followed by a meeting on “Isoelectric Focusing.” Wednesday 26th LON DON acrylamide Gel,” by A. K. Williamson. Wednesday 26th CARLETT PARK Physical Society. Cheshire; 6.30 p.m. LONDON Systems.” 6.30 p.m. Friday 28th GLASGOW Ilecember Tuesday 2nd ATOMIC-ABSORPTION SPECTROSCOPY GROUP Annual General Meeting LONDON followed by a meeting for Review Papers on I.A.A.S.C. Sheffield. Speakers G. F. Kirkbright and I<. A. White. Upper Library Geological Society Burlington House London W. 1 ; 2 p.m. Tuesday 2nd BIOLOGICAL METHODS GROUP Annual General Meeting followed by a Discussion Meeting on “Statutory Requirements for the Biologicals oi the B.P.” LONDON Followed by a Cheese and Wine Party. “The Feathers,” Tudor Street London E.C.4. Wednesday 3rd SOCIETY Meeting on “Scanning Techniques.” LONDON “X-ray Microanalysis Techniques,” by Miss P. J . Killingworth. “X-ray Milliprobe Analysis,’’ by J. D. Wilson. “Examination of Surfaces by Scanning with Charged Particle Beams,” Lecture Theatre B Department of Mechanical Engineering Imperial College NORTH OF ENGLAND SECTION jointly with the Hnddersfield Section of the “Nuclear Methods in Trace Element Analysis,” by A. A. Smales. College of Technology Huddersfield ; 7 p.m. by T. B. Pierce. London S.W.7; 6.30 p.m. Wednesday 3rd HUDDERSFIELD Royal Institute of Chemistry. [continued on inside back cove;. Printed by W Heffer & Sons Ltd Cambridge England

ISSN:0037-9697    

DOI:10.1039/SA96906BX039

出版商:RSC    

年代:1969

数据来源: RSC

摘要:

November 1969 PROCEEDINGS OF THE SOCIETY FOR ANALYTICAL CHEMISTRY Vol. 6 No. I I Amalgamation of Chemical Societies in the United Kingdom THE Society has been invited recently to consider its attitude towards joining an amalgamation of the following Societies The Chemical Society The Faraday Society The Royal Institute of Chemistry The Society for Analytical Chemistry The Society of Chemical Industry. Basically the idea arises from discussions which have already taken place between The chemical Society and the Royal Institute of Chemistry towards the formation of a single chemical society within the U.K. that would speak with one voice for all branches of chemistry and would approximately parallel the activities of the Institute of Physics and the Physical Society which represents and co-ordinates the national and international activities of British physicists.Within such a society the S.A.C. would constitute the Analytical Division in the same way as there is a Division of Analytical Chemistry of the American Chemical Society. Similarly the Faraday Society would probably become the Physical Chemistry Division and so on. This invitation was considered by the Council of our Society in June and a Sub-committee of Council was formed to discuss and advise Council on the implications. This Sub-committee has met twice and has sent delegates to several meetings of represen- tatives of the five societies. The information obtained was discussed by Council in October and I have been asked by Council to inform members of the Society of the actions we are taking. Briefly we are chiefly concerned at the present time with finding out as much as we can about the proposed structure of the new society and with assessing our position as a division of such a body.We have formulated a basic set of requirements which we would wish to be guaranteed before entering into detailed negotiations with a view to joining the new chemical society. We are also putting our views forward concerning the detailed structure of the various boards and committees of the society its groups its regional structure its divisional structure its publications policy its financial structure and so on. Exemplary plans have been provided for these by The Chemical Society and the Royal Institute of Chemistry who are the prime movers in the amalgamation proposals. At present these proposals are purely exemplary and may be altered extensively following mutual discussion.Council through its Sub-committee feels at present that the Society should place itself in the position of being able to discuss the basic proposals for the new society and to influence the decisions that are now being taken so that we can be in a good position eventually to decide whether to join or stay outside any amalgamation that is formed. I have used the word “amalgamation” deliberately at the present time because initially this is what the new society would be. Rut Council is aware that in the fullness of time the new society would be a single body of chemists with a divisional structure in which the Society for Analytical Chemistry would have become the Division of Analytical Chemistry. I n the process of amalgamation we might lose some of our present independence but we iniglit also gain new freedom.When Council has had tlie opportunity to discuss the information that we are presently establishing I will communicate more detailed information to all members of the Society. Meanwhile I should say that while the thought that this Society might remain apart from a union of all the other main chemical societies in the U.K. must give us grave concern it is also true to say that the Society could exist independently outside such a union for tlie foreseeable future without too many difficulties. The prospect of becoming the official analytical division of the (integrated) chemical society of the U.K. is an attractive one that augurs well for the status future prosperity and vitality of analytical chemistry. We must first however carefully consider what restrictions and limitations might exist for us as an analytical division within such a large organisation. T. S. WEST Presideat. 195

ISSN:0037-9697    

DOI:10.1039/SA9690600195

出版商:RSC    

年代:1969

数据来源: RSC

摘要:

196 1 J’YOC. SOC. Auzalyt. Chzem. Reports of Meetings ORDINARY MEETING AN Ordinary Meeting of the Society was held at 3 p.m. on Wednesday November 5th 1969 at the Wellcome Building Euston Road London N.W.l. The Chair was taken by the President Professor T. S. West. ’The subject of the meeting was “Water Analysis” and the following papers were presented November 19691 REPORTS OF MEETINGS 197 and discussed “Water Sources and their Treatment,” by I<. F. Packham; “Examination of Potable Water,” by A. T. Palin; “Analysis of Industrial Waters,” by T. D. Rees; “The Analysis of Aqueous Effluents and Polluted River Waters,” by 13. A. C. Montgomery; “On- line Analysis in Water Systems,” by A. A. Diggens; “Analysis of FVater for High Pressure Hoilcrs,” by W. G. Cummings. NORTH OF ENGLAND SECTION AN Ordinary Meeting of the Section was held at 2.30 p.m.om Saturday October 4th 1969 ;it the City Laboratories Mount Pleasant Liverpool. The Chair was taken by the Chairman of the Section Mr. 1C. Sinar. A lccture on “Industrial Aspects of Food Analysis” was given by A. Turner. SCOTTISH SECTION A JOINT Meeting of the Section with the Edinburgh Branch of the British Computer Society was held at 5.30 p.m. on Tuesday October 7th 1969 at the Heriot-Watt University Grass- market Edinburgh. The Chair was taken by the Chairman of the Etlinburgh Ifranch of the British Computer Society Mr. I. Halfour. A lecture on “Computerised Titrations-Unravelled Stoicheiomctry and High Accuracy” was given by Professor D. W. Dyrssen. WESTERE SECTION A SPECIAL Meeting of the Section was held at 7 p.m.on Thursclay October 2nd 1969 at the Ikpartment of Chemistry University of Wales Institute of Science and ’Technology Cathays Park Cardiff. The Chair was taken by the Chairman of the Section Dr. D. Retteridge. A lecture on “Solvent Extraction” was given by Professor I). W. Dyrssen. MIDLANDS SECTION A DrscussroN Meeting of the Section was held at 6.30 p.m. on Wednesday September 24th 1969 at the Lanchester College of Technology Coventry. The Chair was taken by the Chairinan of the Section Mr. W. M. Lewis. A discussion on “Membrane Electrodes” was introduced by li. A. Carter G. J. Kaltabadse and A. M. G. Macdonald. AN Ordinary Meeting of the Section was held at 2.30 p.m. on Wednesday October 15th 1969 in the Haworth Lecture Theatre Chemistry Department The University Birmingham 16.‘The Chair was taken by the Chairman of the Section Mr. W. M. Lewis. The subject of the meeting was “Computer Applications” and the following papers were presented and discussed “Introduction to Computers,” by R. K. Webster ; “Computer Monitoring of Analytical Equipment Personnel and Samples,” by J . F. Becker ; “Data Acquisition from Analytical Systems,” by J . A. Newell; “The Use of Computers in Identifica- tion of Organic Compounds,” by W. Kelly; “An Automated Laboratory for Gas Chromato- graphy,” by P. Mitchell. NORTH EAST SECTION A SOCIAL Meeting of the Section was held at 7 p.m. on Tuesday October 7th 1969 at the Ramside Hall Hotel Relmont. The Chair was taken by the Chairman of the Section Dr. A. C. Docherty. After an informal dinner a lecture on “Close-ups in Colour” was given by W. R. Lovesey. ?rHE seventieth London Discussion Meeting of the Group was held at 6.30 p.m. on Wednesday October 8th 1969 at “The Leicester Lounge,” Glasshouse Street London W.1. The Chair was taken by the Chairman of the Group Dr. G. Ingrain. A discussion on “The Micro Determination of Fluorine-specific Ion Electrodes zleysuus Other Methods” was introduced by T. R. F. W. Fennell. BIOLOGICAT METHODS GROUP AN Ordinary Meeting of the Group was held at 5 p.m. on Thursday October 23rd 1969 at the Pharmaceutical Society 17 Bloornsbury Square London W.C.l. The Chair was taken by the Chairman of the Group Dr. I. D. Fleming. A lecture on “Interferon and its Antiviral Properties” was given by R. D. Andrews. MICROCHEMICAL METHODS GrCouP

ISSN:0037-9697    

DOI:10.1039/SA969060196c

出版商:RSC    

年代:1969

数据来源: RSC

摘要:

198 RADIOFREQUENCY SPECTROSCOPY [Z’mc. SOC. Afialyt. Clzem. Radiofrequency Spectroscopy The following is a summary of one of the papers presented at a Joint Meeting of the Society organised by the Special Techniques Group with the Spectroscopy Group of the Institute of Physics held on February 5th 1969 and reported in the February issue of Proceedifigs (p. 16). Microwave Spectroscopy of Gases as an Analytical Technique BY J. SHERIUAN (Tlc$avtunent of Chemistvy Univevsity College of Novth Wales Ilangov) IT has been known for over 20 years that most of the prime requirements of a spectroscopic method of analysis are outstandingly fulfilled by microwave spectroscopy. The advantages and limitations of this method have been described many times,l to9 and are mainly as follows. ADVANTAGES- Even in the popular radar bands there is room for many tens of thousands of separately identifiable absorptions the frequencies of which can be measured easily to one part in several hundred t‘h ousand .As rotation spectra they depend critically on the moments of inertia of whole molecules; different isotopic forms and different conformations of molecules behave as different species. (i) The spectral range is very large and the resolving power very high. (ii) The spectra are extremely sensitive to molecular constitution. (iii) Modern electronic techniques allow detection of extremely weak absorptions. (iv) Very little sample is needed; in extreme cases a few micromoles will suffice. LIMITATIONS- (i) Advantage of the huge resolution can only be taken if the sample is a gas at quite low pressure (about torr) as molecular collisions broaden the absorptions.This however only excludes extremely involatile substances sufficient gas pressure being obtainable at room temperature from substances with boiling-points up to about 200”C while much less volatile materials can be studied in only moderately heated cells. (ii) The molecules must have permanent dipole moments but this is true of most mole- cules. From limitations (;) and (ii) we see that as with all types of spectroscopic analysis the method is better for some substances than for others. (iii) The absorption cells are large metal tubes of considerable wall area and desorption effects can be important. (iv) The shapes of absorptions follow more complex laws than in ordinary spectroscopy and microwave intensity measurements require careful technique.Disappointingly few applications of the method have been made to analytical problems despite steady improvement in the techniques of intensity measurement .lOJ1 Many measure- ments of relative intensities of lines have been made and relative molecular populations can be derived from them with an accuracy not unlike that of other spectroscopic methods provided the different species have essentially the same collision properties. This is largely true when the species are either different vibrational states of the same substance or different isotopic forms of it and several isotopic analyses have been made by the microwave method.12J3 This is particularly powerful if we wish to know the distribution of isotopes within a substance as this follows from the spectra.Although the “area” under an absorption line is normally proportional to the concentration of the absorbing molecules the width and peak intensities of absorptions depend in complex ways on the molecular collision processes and hence vary with the collision efficiency (roughly the polarity) of the various components of a mixture. Thus in the presence of diluents of low polarity an absorption will appear abnormally narrow and its abnormally high peak intensity considered alone would indicate an erroneously high concentration of absorbing rnolecules ; Analysis of mixtures of chemically different substances raises a special problem. November 19691 KADIOFREQUENCY SPECTROSCOPY 199 conversely an equivalent dilution with highly polar gases would lead to an abnormally wide absorption and a peak intensity corresponding to an erroneously low concentration.Ways of meeting these complications are indicated in fuller reviews,l to and in essence they depend on calibration procedures which are part of most spectroscopic analytical methods. It is this factor however that has chiefly delayed applications of the technique aided by some reluctance on the part of analysts to view their spectra at all times under enormous resolution. There are now signs of a greater general acceptance of the method coinciding with the gradual beginning of a new phase of the subject in which its techniques now very much more matters of routine are becoming accepted as a main part of chemical spectroscopy. The explosive development of microwave electronics has brushed aside factors that made micro- wave spectroscopy dependent on the skill of the operator.In particular it is now possible to sweep non-temperamental source oscillators quickly through entire radar bands and to detect spectra with devices which are sufficiently broad-banded not to require adjustments during this process. When desired spectra can be presented on highly compressed frequency scales and some striking examples of this have been published by the Hewlett-Packard Company.14 Most importantly the sacrificed resolution can be re-captured as required. To the analyst this “zoom lens” facility has distinct advantages. Firstly the compressed spectra give a fingerprint of a broad spectral range which with certain reservations reminds us of infrared spectra. Secondly even although by no means all absorptions show under lowered resolution sensitivity to molecular constitution and shape can still be very striking.Sections selected for analytical purposes are then of course examined with greatly increased resolution. It should not be thought however that such facilities would have to be turned on for every analytical problem. For the restricted frequency ranges (or even fixed frequencies) which would serve for many routine analyses or in fast-acting process-control mechanisms the microwave electronics boom has brought most of the necessary components into the mass- production market and has greatly improved the lifetime and reliabilities of sources and detectors. Of considerable current interest is a new approach to the problems of intensity measure- ment also from the Hewlett-Packard Company.15 This takes advantage of the facility in suitably designed spectrometers to vary the power level in the sample over a considerable range and to subject some of the absorptions to a certain degree of power saturation.This arises when the molecular-collision relaxation processes cannot maintain a Boltzmann-type population distribution in the molecular energy states in the presence of the radiation. It therefore sets in at lower power levels the less efficient the line-broadening collisions while conversely the more a line is broadened by collisions the more its peak intensity may be increased by raising the radiation power before saturation curtails the increase ; i.e. wide lines of abnormally low peak intensity are less easily saturated than narrow lines of abnormally high peak intensity.Study shows by selection of the appropriate power level peak intensities can be recognised which are proportional to the concentration of the absorbing molecules and independent of the nature of the other constituents of the mixture. Naturally other information is also obtained at the same time including data on the collision efficiencies of molecules. Future developments could be influenced by the use of microwave double-resonance spectroscopy at present mostly an exciting new technique of value in research. In this the spectra are made even more specific to particular molecules by making them dependent on simultaneous interaction of one molecular species with two different exactly defined fre- quencies of radiation. If a method should be required in which one single instrumental response must be absolutely unequivocally indicative of the presence of a particular substance microwave double-resonance will probably be chosen.Exploratory work has already begun in this direction.16J7 With the new technical advantages we hope that the long awaited useful exploitation of the method will come about. Perhaps the difficulty has been one of communication and it is to be hoped that no industry with a problem in analysis or process control which might conceivably respond to the microwave method will hesitate to consult one of those groups of experts in the United Kingdom whose experience of the field goes back to the earliest days. Certainly at Bangor we are anxious to find potential analytical users of our methods. 200 1. 2. 3.4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. PAPERS ACCEPTED FOR PUBLICATION [I’YOC. S O C . A.tzaZyt. Chem. REFERENCES Townes C. H. and Schawlow A. L. “Microwave Spectroscopy,” McGraw-Hill Publishing Co. Gordv W. in West W. Editov “Technique of Organic Chemistry,” Volume IX Intcrscience New York 1955. Piblishers Inc. New York 1956 p. 71. - Dailey B. P. in Weissberger A. Editov “Physical Methods of Organic Chemistry,” Volume Part 111 Interscience Publishers Inc. New York 1954 p. 2321. Dailey B. P. in Berl W. G. Editov “Physical Methods in Chemical Analysis,” Volume I Academic Press Inc. New York 1956 p. 281. Hughes. R. H.. Ann. N.Y. Acad. Sci. 1952 55 872. - ShGidan J. Chem. & Ind. 1953 648. - in “Proceedings of Conference on Automatic Measurement 01 Quality in l’rocess Plants Swansea - i n Wilson C.L. and Wilson D. W. Editovs “Comprehensive Analytical Chemistry,” Volumc 1 I I Millen D. J. Cheruz. in Bvitnin 1968 4 202. Esbitt A. S. and Wilson E. R. Rev. Scient. Instvuvlz. 1963 34 901. Dymanus A. Dijkerman H. A. and Zijderveld G. K. D. J . Chem. Phys. 1960,32 717. Southern A. I,. Morgan H. W. Keilholtz G. W. and Smith W. V. Analyt. Chem. I951,23 1000. Hirota K. and Hironaka Y. Bull. Chem. Soc. Japan 1966 39 2638. “Molecules and Microwaves,” Hewlett-Packard Ltd. 224 Bath Road Slough Bucks. Harrington H. W. J . Chem. Phys. 1967,46 3698; and 1968,49 3023. Volpicelli R. J. Stiefvater 0. L. and Flynn G. W. A’ASA Contract Repovt 1967; Chcm. A h l v . 1957,” Butterworths London. Elsevier to be published. 1968,69 24387g. _ _ - Chem. Engng News 1967 70.

ISSN:0037-9697    

DOI:10.1039/SA9690600198

出版商:RSC    

年代:1969

数据来源: RSC

摘要:

200 PAPERS ACCEPTED FOR PUBLICATION [I’YOC. S O C . A.tzaZyt. Chem. Papers Accepted for Publication in The Analyst THE following papers have been accepted for publication in The Analyst and are expected to appear in the near future. “The Determination of Sub-microgram Amounts of Fluoride with Zirconium and “The Determination of Water in Methanol by Near Infrared Absorption,” by J. D. S. “The Identification of Furfuraldehyde in Hydrocarbon Oils,” by N. M. Soutar. “Automatic Methods of Solvent Extraction Batch Extraction of Non-ionic Detergents,” “The Concentration Detection and Identification of Late Gas-chromatographic Peaks,” “The Determination of Nitrogen in Silicon Nitride,” by A. Parker and C. Healy. Solochrome Cyanine R,” by E. J. Dixon. Goulden and D. J. Manning. by R. Sawyer P. B. Stockwell and K. B. W. Tucker. by G. R. Primavesi. November 19691 NOTICE 201 “Automated Determination of Ammonium and Nitrate in Soils Extract by Distillation,” “Photonuclear Activation Analysis of Fluorine in Urine,” by S. Ohno M. Suzuki “Spectrofluorimetric Analysis of Mixtures of the Principal Opium Alkaloids,” by R. A. “Ellman’s Reagent Interference to Mercapto Group Determination with Special by J. Keay and P. M. A. Menage. K. Sasajima and S. Iwata. Chalmers and G. A. Wadds. Reference to Cigarette Smoking,” by R. C. Benedict and R. L. Stedman.

ISSN:0037-9697    

DOI:10.1039/SA969060200b

出版商:RSC    

年代:1969

数据来源: RSC

摘要:

November 19691 NOTICE 201 BRITISH STANDARDS INSTITUTION DRAFT SPECIFICATIONS A FEW copies of the following draft specifications issued for comment only are available to members of the Society and can be obtained from the Secretary The Society for Analytical Chemistry 9/10 Savile Row London WIX 1AF. Draft Specification prepared by Sub-committee NFE/22/6-.Sampling and Analysis of Lead and Lead Alloys. Part 6 Determination of Tellurium in Lead and Lead Alloys (Photometric Method) (Metric Units). Draft Specification prepared by Sub-committee NFE/-/3-Sampling and Analysis of Aluminium and Aluminium Alloys. 69/22087-Draft B.S. Methods for the Analysis of Aluminium and Aluminium Alloys. Draft Specification prepared by Sub-committee NFE/23/4-Sampling and Analysis of Magnesium and Magnesium Alloys.69/22088-Draft B.S. Methods for the Analysis of Magnesium and Magnesium Alloys. Draft Specification prepared by Sub-committee NFE/8/4-Sampling and Analysis of Zinc and Zinc Alloys. 69/22089-Draft B.S. Methods for the Sampling and Analysis of Zinc and Zinc Alloys. Part 8 Lead and Cadmium in Zinc (Grades Znl and Zn2) and Zinc Alloys (Polarographic Method) (Metric Units). Draft Specification prepared by Technical Committee ISE/1 8-Sampling and Analysis of Iron and Steel. Determination of Tantalum Method 1 for Steel (Trace Amounts) Photometric (Metric Units). Draft Specification prepared by Technical Committee CIC/12-Preservative Chemicals. Draft B.S. Methods for the Sampling and Analysis of Lead and Lead Alloys. Part 19 Magnesium (Atomic Absorption Method) (Metric Units). Part 8 Total Rare Earths (Gravimetric Method) (Metric Units). 69/22090-Draft B.S. Methods for the Analysis of Iron and Steel. 69/24213-Draft B .S. Specification for Bis(Tri-n-Butyltin) Oxide,

ISSN:0037-9697    

DOI:10.1039/SA969060201b

出版商:RSC    

年代:1969

数据来源: RSC

摘要:

202 E RRATIJM [I’Yoc. SOC. Arzalyt. Chum. Erratum AUGUST (1969) ISSUE p. 137. Reference 21. For “Hoddman I. Westerby €3. J. and Hidiroglov H. read “Hoffman I. Westerby R. J. and Hidiroglou M.”

ISSN:0037-9697    

DOI:10.1039/SA969060202b

出版商:RSC    

年代:1969

数据来源: RSC