JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY DECEMBER 1992 VOL. 7 61N Future Issues Will Include- Interferences in Inductively Coupled Plasma Mass Spectrometry A Re- view-E. Hywel Evans and Jeffrey J. Giglio Differentiation Between Organic and Inorganic Chlorine by Electrothermal Vaporization Inductively Coupled Plasma Mass Spectrometry Applica- tion to the Analysis of Polychlorinated Biphenyls in Waste Oils-Peter Rich- ner and Samuel Wunderli Rapid Furnace Programmes for the Slurry Electrothermal Atomic Absorp- tion Spectrometric Determination of Chromium Lead and Copper in Diato- maceous Earth-Ignacio Lopez Garcia Jesus Arroyo Cortez and Manuel Her- nandez Cordoba Use of Thallium as an Internal Correction for the Measurement of Lead Isotopic Ratios by Inductively Coupled Plasma Mass Spectrometry -Andrew J.Walder Philip A. Freed- man and I. Platzner Simple Nitric Acid Dissolution Method for Electrothermal Atomic Ab- sorption Spectrometric Analysis of Atmospheric Aerosol Samples Col- lected by a Berner-type Low-pressure Impactor-Tuomo A. Pakkanen Risto E. Hillamo and Willy Maenhaut Characterization of a Linear-flow Torch for Inductively Coupled Plasma Atomic Emission Spectrometry-Nor- man N. Sesi P. J. Galley and Gary M. Hieftje Feasibility Study for Quantitative Multi-element Determination in Sili- cates by Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS)-John G. Williams and Kym E. Jarvis Behaviour of Cadmium Cobalt and Lead in Chlorine Containing Organic Solvents in Electrothermal Atomic Ab- sorption Spectrometry-E. Tserovsky S.Arpadjan and Irina Karadjova Development of an Atomic Fluores- cence Spectrometer for the Hydride Forming Elements-Warren T. Corns Peter B. Stockwell Les Ebdon and Steve J. Hill Analysis of Impurities in Germanium Tetrachloride Germanium Dioxide and High Purity Germanium by Zee- man Graphite Furnace Atomic Ab- sorption Spectrometry-E. Senti- menti G. Mazzetto L. Meregalli and E. Milella Sensitive ‘One Drop’ Flame Atomic Absorptiometric Determination of Cadmium in Botanical Samples Using Direct Nebulization of Chloroform Extract-Isao Kojima and Shinji Kondo Effects of Surfactants in Flame Atomic Absorption Spectrometry With Pneu- matic Nebulization Influence of Hy- drophobic Chain Length-A. I. Ruiz Antonio Canals and Vicente Hernandis62N JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY DECEMBER 1992 VOL.7 Determination of Butyltin Com- pounds in Sediment Samples by Gas Chromatography-Atomic Absorption Spectrometry Following In Situ Deri- vatization With Sodium Tetraethylbo- rate-Yong Cai Spyridon Rapsoman- ikis and Meinrat 0. Andreae Electrothermal Vaporization and U1- trasonic Nebulization for the Determi- nation of Aqueous Sulfur Using a Ulowatt-plus Helium Microwave- induced Plasma-Jorge Alvarado Mingin Wu and Jon W. Carnahan Determination of Scandium Yttrium and Eight Rare Earth Elements in Silicate Rocks and Six New Geological Reference Materials by Simultaneous M ul t i-element Electrothermal Atomic Absorption Spectrometry With Zee- man Background Correction-J. G. Sen Gupta Application of Ultrasonic Nebuliza- tion in the Analysis of Petroleum and Petrochemicals by Inductively Coup- led Plasma Atomic Emission Spectro- metry-Robert I.Botto Figures of Merit for Two-step Furnace Atomization Plasma Emission Spec- trometry-Anders K. E. Ohlsson Ralph E. Sturgeon Scott N. Willie and T. Van Luong Evaluation of a Modified Electrother- mal Vaporization Sample Introduc- tion System for the Analysis of Liquids by Inductively Coupled Plasma Atomic Emission Spectrometry- J. M. Ren and Eric D. 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