X SUMMARIES OF PAPERS I N THIS ISSUEPolarographic Determination of Some LinearAlkylbenzene SulphonatesSeptember, 1979The linear alkylbenzene sulphonate content of sewage samples has beendetermined by an indirect polarographic method. Recoveries made onsewage samples spiked with between 25 and 100 pg of 4-phenyldodecanesulphonate ranged from 82.0 to 104.1y0, respectively, showing the methodto be reliable when concentrations were of the order of 0.5 pg ml-l or greater.This was also confirmed by recoveries made on tap water.Keywords : Linear alkylbenzene sulphonate determination ; polarographyJ. P. HART and W. FRANKLIN SMYTHChemistry Department, Chelsea College, Manresa Road, London, SW3 6LX.and B. J. BIRCHUnilever Research, Port Sunlight Laboratory, Port Sunlight, Wirral, Merseyside,L62 4XN.Analyst, 1979, 104, 853-859.Determination of the Amino Acid Contents of Coalworkers’ LungsAfter Correction for Blood, Fat, Dust and CollagenThe amino acid contents of dust-affected coalworkers’ lungs, complicatedpneumoconiotic lesions, the remainder of the lungs from which the lesionshad been removed and dust-free control lungs have been determined.Theresults have been corrected for blood, dust, fat and collagen content, but nosignificant differences between dust-free and dust-affected lungs were found.The residual amino acid results, after correction, closely resembled the resultsfor glycoprotein extracted from human lung pleura and aorta.analysis ; PnewmoconiosisROY LOXLEYHealth and Safety Executive, Safety in Mines Research Establishment, Red Hill,Sheffield, S3 7HQ.Analyst, 1979, 104, 860-864.Keywords : Amino acid determination ; coalworkers’ lungs ; human lungNaphthidines and o-Dianisidine as Redox Indicatorsin Titrations with N- BromosuccinimideThe optimum conditions for the successful uge of naphthidine, 3,3’-dimethyl-naphthidine, 3,3’-dimethylnaphthidinedisulp>onic acid and o-dianisidine asindicators in macro- and micro-titrations of hexacyanoferrate(II), iron(I1) ,hydroquinone, metol and ascorbic acid with N-bromosuccinimide have beenestablished.The indicators give a very sharp reversible colour change at theequivalence point and have advantages over the existing redox indicators.Hydrazinium sulphate and hydroxylammonium chloride have been determinedindirectly.Anhydrous hexacyanoferrate(I1) and iron(I1) are suggested for thestandardisation of N-bromosuccinimide solutions.Keywords : Naphthidine and o-dianisidine indicators ; N-bromosuccinirnideand hexacyanoferrate (11) standardisationH. SANKE GOWDA, R. SHAKUNTHALA and U. SUBRAHMANYADepartment of Postgraduate Studies and Research in Chemistry, Manasa Gangotri,University of Mysore, Mysore, India.Analyst, 1979, 104, 865-872.September, 1979 THE ANALYST xiCOBALT IN BIOLOGYAND BIOCHEMISTRYRoland S. YoungAugust/September 1979, x + 148pp., ;E11.80 0.12.772750.7Although cobalt plays an important role in ruminant nutrition and functions as a key element invitamin BIZ, information on its biology and biochemistry has not, until now, been collected together inbook form.placed to make a critical assessment of such published investigations.This book takes the form of areview of the literature of cobalt and a reference manual that will enable researchers to benefit froman insight into the techniques employed and data obtained by others working in different areas ofscience. The cobalt content of fertilizers, waters and plants, cobalt in human and animal nutritionand the effects of cobalt on enzymes and microorganisms are the subjects of just some of thechapters.throughout the world and the relationship between the cobalt content of soils and ruminant health.The text is well documented with over a thousand references, allowing the agricultural, medical,biological and chemical researcher or student ample scope to pursue his own particular interest andto acquire ideas from other areas of science which may be applicable to his own.With over forty years of experience of all aspects of cobalt, Dr.Young is eminentlyA lengthy chapter on soils reviews the total and available cobalt in various soilsAcademic PressLondon New York Toronto Sydney San FranciscoA Subsidiary of Harcourt Brace Jovanovich, Publishers24-28 Oval Road, London NW1, England11 1 Fifth Avenue, New York, NY 10003, USAPO Box 300, North Ryde, NSW 2113, AustraliaAnalytical Sciences Monograph No. 2The Chemical Analysis of WaterGeneral Principles and Techniquesby A. L. Wilson( Water Research Centre, Medmenhem Laboratory)BRIEF CONTENTS:Introduction. Information requirements of Sampling and Analysis Programmes.Sampling.The Accuracy and Reporting of Results. Choice and Sources of Analytical Methods.General Precautions in Water-analysis Laboratories. Manual Analytical Techniques.Automatic and On-line Analysis. Data-handling.Pp. viii + 188 f 7.50Clothbound ISBN 0 85990 502 0 CS Members' price f5.75Orders should be sent through your usual bookseller or direct, enclosing remittance, to-Distribution Centre,THE CHEMICAL SOCIETYBlackhorse Road, Letchworth, Herts., SG6 1 HNCS Members must write direct to the above address enclosing the appropriate remittancxii SUMMARIES OF PAPERS IN THIS ISSUENon-aqueous Titration of Substituted N-o- TolylbenzohydroxamicAcidsSeptember, 1979Short PaperKeywords ; Non-aqueous titration ; substituted N-o-tolylbenzohydroxamic acidsY.K. AGRAWALPharmacy Department, Faculty of Technology and Engineering, Maharaja Sayaj iraoUniversity of Baroda, Kalabhavan, Baroda 390 001, India.Analyst, 1979, 104, 873-875.Trace Determination of Carbonyl Compounds in Air by GasChromatography of their 2,4-DinitrophenylhydrazonesShort PaperKeywords ; Trace carbonyl determination ; air analysis ; 2,4-dinitrophenyl-hydrazones ; gas chromatographyR. A. SMITH and I. DRUMMONDOccupational Health and Safety Division, Alberta Labour, 10158-103 Street,Edmonton, Alberta, Canada, T5 J 0x6.Analyst, 1979, 104, 875-877.Effect of Ammonium Nitrate on the Gas-chromatographicDetermination of Some Pesticide Residues in SoilsShort PaperKeywords : Pesticide residue determination ; soil analysis ; gas chromnto-graphy ; ammonium nitrateE.G. COTTERILLAgricultural Research Council, Weed Research Organization, Begbroke Hill, Yarnton,Oxford, OX5 IPF.Analyst, 1979, 104, 878-880.Spectrophotometric Determination of Iodide Ion Using Palladiumand 2-Nitroso - 5- diethylaminophenolShort PaperKeywords : Iodide determination ; spectrophotometry ; palladium ; 2-nitroso-5-die thy larnino phenolSHOICHI HAMADA, SHOJI MOTOMIZU and KYOJI T6EIDepartment of Chemistry, Faculty of Science, Okayama University, Tsushima-naka,Okayama-shi, Japan.Analyst, 1979, 104, 880-882xiv SUMMARIES OF PAPERS IN THIS ISSUEElectroanalytical Study of Zinc - L- Citrulline Complexat a Dropping-mercury ElectrodeSeptember, 1979Short PaperKeywords : Polarography ; zinc - L-citrulline complexK.M. SUYAN, S. K. SHAH and C. M. GUPTAChemical Laboratories, University of Rajasthan, Jaipur, India.Analyst, 1979, 104, 883-886.Determination of Trace Amounts of Sulphate by Molecular EmissionCavity Analysis Using a Vaporisation SystemCommunicatioaKeywords : Hydrogen flame ; molecular emission cavity analysis ; sulphatereduction ; tin - orthophosphoric acidS. L. BOGDANSKIRonalstan Chemical Consultants, Temple House, New Street, Birmingham, B2 4LH.and ISSAM M. A. SHAKIR, W. I. STEPHEN and ALAN TOWNSHENDDepartment of Chemistry, University of Birmingham, P.O. Box 363, Birmingham,B15 2TT.Ayzdyst, 1970, 104, 886-890.Novel Reagent for the Determination of AtmosphericIsocyanate Monomer ConcentrationsCommunicationKeywords : Isocyanate determination ; 1,( 2-pyridyl)pipevazine reagelzt ;atmospheric pollution ; high-performance lzquad chromatogvaphyHORACE L. HARDY and RONALD F. WALKERHealth and Safety Executive, Research and Laboratory Services Division, 403Edgeware Road, London, NW2 6LN.Analyst, 1979, 104, 890-891