ANALAO 117(7) 1061-1214 (1992)The AnalystJuly 199210611071107510851093109911051111112911331137114511511157116111651169117311751179The Analytical Journal of The Royal Society of ChemistryCONTENTSCo-fluorescence Effect in Time-resolved Fluoroimmunoassays. A Review-Yong-Yuan Xu, llkka A. Hemmila, Tim0 N.-E.LovgrenQuantification of Theophylline in Human Plasma by Reversed-phase Ion-interaction High-performance LiquidChromatography and Comparison With the TDx Fluorescence Polarization lmmunoassay ProcedureM. C.Gennaro, C. Abrigo, P. BiglinoDetermination of Thallium in Cement Dust and Sediment Samples by Differential-pulse Anodic Stripping Voltam-metry: A Chemometric Approach t o Linear Calibration-Mahmoud A. Allus, Richard G.BreretonMultivariate Analysis of a Round-robin Study on the Measurement of Chlorobiphenyls in Fish Oil-Raj K. Misra, John F.Uthe, Charles J. MusialEdible Fats and Oils Reference Materials for Sterols Analysis With Particular Attention t o Cholesterol. Part 1.Investigation of Some Analytical Aspects by Experienced Laboratories-Georges Log nay, Michel Severin, AchimBoenke, Peter J. WagstaffeFocal Plane Charge Detector for Use in Mass Spectrometry-Keith BirkinshawGas Chromatographic-Mass Spectrometric Characterization of Flavanones in Citrus and Grape Juices-Colin S.Creaser, Mohammed R. Koupai-Abyazani, G. Richard StephensonDetection and Identification of Volatile Substances by Headspace Capillary Gas Chromatography t o Aid the Diagnosisof Acute Poisoning-Peter J.Streete, Manjit Ruprah, John D. Ramsey, Robert J. FlanaganComparison of Solvent Extraction and Solid-phase Extraction for the Determination of Organochlorine PesticideResidues in Water-Guan H. TanSynthesis of Tin(iv) Vanadopyrophosphate as a Novel Stationary Phase for High-performance Liquid Chromatographyand Its Application t o Amino Acid Analysis-Xing-Dong Yao, Jin-Chun Liu, Jin-Lan Xia, Jie-Ke Cheng, Yun'e ZengComparison of Ion Chromatographic Methods for the Determination of Organic and Inorganic Acids in PrecipitationSample-Venghuot CheamAnion-exchange Chromatography of Mixed Cyano Complexes: Separation and Determination of Dicyanoaurate(1)-Emmanuel 0. Otu, Campbell W. Robinson, John J. ByerleyDetermination of Osmium Abundance in Molybdenite Mineral by Isotope Dilution Mass Spectrometry With MicrowaveDigestion Using Potassium Dichromate as Oxidizing Agent-Katsuhiko Suzuki, Qi-Lu, Hiroshi Shimizu, AkimasaMasudaDetermination of Nickel in Biological Materials After Microwave Dissolution Using Inductively Coupled Plasma AtomicEmission Spectrometry With Prior Extraction into Butan-I-ol-Elisa Vereda Alonso, Amparo Garcia de Torres, JoseM.Can0 PavonDetermination of Butyltin Species in Sewage and Sludge by Gas Chromatography-Atomic Absorption Spectrometry-Y. K. Chau, Shuzhen Zhang, R. J. MaguireDetermination of Mercury in Fluorescent Lamp Cullet by Atomic Absorption Spectrometry-Ryszard Dobrowolski,Jerzy MierzwaMatrix Effect Corrections for the Quantitative X-ray Fluorescence Determination of Iron Using Scattered Radiation-Maria Teresa Garcia-Gonzalez, Maria Dolores Haro-Ruiz, Alfonso Hernandez-LagunaOxalate-catalysed Oxidimetric Assay of Thiourea With Permanganate-Alice KurianSpectrophotometric Determination of Titanium(iv) Using Chromotropic Acid and a Flow Injection Manifold-RajeshPurohit, Surekha DeviSimplex-optimized and Flow Injection Spectrophotometric Assay of Tetracycline Antibiotics in Drug Formulations-Salah M.Sultan, Fakhr-Eldin 0. Suliman, Salih 0. Duffuaa, ldeisan I. Abu-AbdounTypeset and printed by Black Bear Press Limited, Cambridge, England0003-2654(199237-1185 Light Scattering Method for the Determination of Trace Amounts of Phosphate Using a Cationic Water-solublePorphyrin-Masaaki Tabata, Keisuke Harada1189 Spectrofluorimetric Determination of Boron in Soils, Plants and Natural Waters With Alizarin Red S-Ana M.GarciaCampafia, Fermin Ales Barrero, Manuel Roman CebaPAPER PRESENTED AT THE XXVll CSI, BERGEN, NORWAY, JUNE 6-8,19911193 Mobility of Superficially Applied Caesium-134 and Strontium-85 in Apple Branches Under Precipitation-freeConditions-Gunnar B. Bengtsson1197 BOOK REVIEWS1212 ERRATUM1213 CUMULATIVE AUTHOR INDEX(i) FACSS XIXROYAL SOCIETY OF CHEMISTRYBiotransformations:A Survey of the Biotransformations of Drugs and Chemicals in AnimalsEdited by David R. Hawkins, Huntingdon Research CentreBiotransformations is an important series which has been devised to bring together all current information on the subject, in a readily accessible form.It provides up-to-date information on the biotransformation of pharmaceuticals, pesticides, food additives, and environmental and industrial chemicals inanimals and will be of great interest to chemists, biochemists and toxicologists in a wide variety of industries, as well as to regulatory authorities andlegislative bodies.Each volume reviews biotransformation pathways that have been reported in the literature in the preceding twelve months andalthough successive volumes may cover similar compounds the biotransformation pathway in each case will differ.The abstracts are arranged according to chemical classes and are assigned to key functional groups - a concept which has been developed to provideaccess to information on the biotransformations of compounds with similar structural features.Biotransformations Volume 4 is cumulatively indexed by compound, key functional group and reaction type, covering all entries in Volumes 1-4.Volume 4 Volume 3 Volume 2 Volume 1Hardcover xxx + 492 pagesISBN 0 85186 187 3 (1992)Price €99.50 Price €89.50 Price €79.50Hardcover xviii + 462 pagesISBN 0 85186 177 6 (1991)Hardcover xx+496 pagesISBN 0 85186 167 9 (1990)Hardcover xxii+511 pagesISBN 0 85186 157 1 (1989)Price €79.50Special Package Price (Volumes 1 4 ) f299.00ROYALSOCIETY OFCHEMISTRYInformationServices~~~ ~ ~~To Order, Please write to the: Royal Society of Chemistry, Turpin Distribution Services Limited, Blackhorse Road, Letchworth, Herts SG6 1 HN,UK, or telephone (0462) 672555 quoting your credit card details.We can now accept AccessNisalMasterCard/Eurocard.Turpin Distribution Services Limited, is wholly owned by the Royal Society of Chemistry.For information on other books and journak, please write to the:Royal Society of Chemistry, Sales and Promotion Department, Thomas Graham House, Science Park, Milton Road,Cambridge CB4 4WF, UK.RSC Members should obtain members prices and order from :The Membership Affairs Department at the Cambridge address above.Circle 006 for further informatio