ANALAO 108 (1 289) 905-1 032 (1 983) August 1983THE ANALYSTTHE ANALYTICAL JOURNAL OF THE ROYAL SOCIETY OF CHEMCONTENTSSTRY905 Combination o f Flow Injection Analysis w i t h Flame Atomic-absorption Spe trophoto-metry: Determination of Trace Amounts of Heavy Metals in Polluted Seawater-Svend Olsen, Luiz C. R. Pessenda, Jarornir R82iEka and Elo H. HansenDetermination o f the Chemical Forms o f Cadmium and Silver i n Sediments by ZeemanEffect Flame Atomic-absorption Spectrometry-Ken R. Lum and Duart G. EdgarDetermination o f Caesium and Rubidium by Flame and Furnace Atomic-absorptionSpectrometry-2. Grobenski, D. Weber, B. Welz and J. WolffPyridine-2-aldehyde 2-Furoylhydrazone as a Fluorogenic Reagent f o r the Determina-t i o n of Nanogram Amounts o f Gallium-Eloisa Requena, Jose J.Laserna, Aurora Navasand Francisco Garcia Sinchez939 Spectrophotometric Determination o f Arsenic i n Biological Tissues and SedimentsAfter Digestion w i t h Nitric, Sulphuric and Perchloric Acids and Pre-concentrationby Zinc Column Arsine Generation and Trapping-W. A. Maher944 Spectrophotometric Determination o f Phosphorus and Arsenic i n Steel by SolventExtraction o f their Heteropolyacids w i t h Ethyl Violet-Shoji Motomizu, ToshiakiWakirnoto and Kyoji T6ei918925933952959966971978904991997100310071013Extraction and Spectrophotometric Determination of Titanium(lV) w i t h N-Phenyl-laurohydroxamic Acid and Phenylfluorone-H. Dasaratha GunawardhanaSpectrophotometric Determination o f Rhodium(l1l) in Aqueous and Alcoholic MediaUsing 2-Thiobarbituric Acid-Basilio MorelliRapid Spectrophotometric Determination of Saccharin i n Soft Drinks and Pharma-ceuticals Using Azure B as Reagent-P.G. Rarnappa and Anant N. NayakInterfacing an Automatic Elemental Analyser w i t h an Isotope Ratio Mass Spectro-meter: the Potential f o r Fully Automated Total Nitrogen and Nitrogen-I5Analysis-Thomas Preston and Nicholas J. P. OwensDetermination o f Phosgene in Methylene Chloride After Cyclisation w i t h a 2-Hydroxy-amine and Gas Chromatography w i t h Nitrogen-selective Detection-Olle Gyllen-haalSimultaneous Gas-chromatographic Analysis o f Lower Fatty Acids, Phenols andlndoles i n Faeces and Saliva Using a Fused Silica Glass Capillary Column-Yasuyuki Hoshika and Ninzo MurayamaIonic Polymerisation as a Means of End-point Indication i n Non-aqueous ThermometricTitrimetry.Part XI. The Reaction Mechanism o f lodimetric End-point Indica-tion and an Evaluation o f a Copolymerisation Indicator Reaction-Edward J.Greenhow and G. Louis JeyarajVoltammetric Studies o f Zomepirac Sodium and i t s Determination i n Tablets byDifferential-pulse Polarography-Leslie G. Chatten, Stanley Pons and LawrenceArnankwaTransient Potential Shifts w i t h pH Glass Electrodes Due t o Divalent Cations-Colin D.KennedyInfluence o f Instability o f Thiocyanate in Argentimetry and Mercurimetry-EdrnundBishop, David Darker, Michael D. Jones, Paul M. Stewart and Salah M. SultanFlow Injection Analysis System f o r Determining Soil pH-Tony E. Edmonds and GraceCouttsSHORT PAPERS1018 Rapid Spectrophotometric Determination o f Nitrate w i t h Phenol-Noel Velghe andAlbert Claeys1022 lodimetric Micro-determination o f Aliphatic Acids by a Potentiometric TitrationMethod and Comparison w i t h Acid - Base Potentiometry-Anjou Wadhwa and RajMohan VerrnaDetermination of Nitrate in Lake Water by the Adaptation o f the Hydrazine - CopperReduction Method f o r Use on a Discrete Analyser: Performance Statistics and anInstrument-induced Difference from Segmented Flow Conditions-John Hiltonand Eric Rigg1029 BOOK REVIEWS1026Summaries of Papers in this Issue-Pages iv, v. vi, vii, viii, ix, x, xiiPrinted by Heffers Printers Ltd Cambridge EnglandEntered as Second Class at New York, USA, Post Offic