352 JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY AUGUST 199 1 VOL. 6 Future Issues will Include- Comparison of Normal and Low Flow Torches for Inductively Coup- led Plasma Mass Spectrometry Using Optimized Operating Condi- tions-E. Hywel Evans and Les Ebdon Determination of Lead by Hydride Generation Atomic Absorption Spec- trometry With In Situ Concentration in a Zirconium Coated Graphite Tube-Yan Xu-Ping and Ni Zhe- Ming Organic Solvents in Electrothermal Atomic Absorption Spectrome- try-E. Tserovsky and S. Arpadjan Determination of Lead in Soil by Slurry-Graphite Furnace Atomic Ab- sorption Spectrometry With a Fast Temperature Programme-Michael W. Hinds Kathryn E. Latimer and Kenneth W. Jackson Comparison of Refractive Index En- ergy Dispersive X-ray Fluorescence and Inductively Coupled Plasma Atomic Emission Spectrometry for Forensic Characterization of Sheet Glass Fragments-Robert D.Koons Charles A. Peters and Pamela S. Rebbert Quantitative Analysis of Trace Ele- ments in Carbonates Using Laser Ablation Inductively Coupled Plasma Mass Spectrometry-W. T. Perkins R. Fuge and N. J. G. Pearce Analytical Performance Evaluation of a New 40.68 MHz Inductively Coupled Plasma Mass Spectro- meter-Chang J. Park and Kwang W. Lee Rapid Stopped-flow Microwave Di- gestion System-V. Karanassios F. H. Li B. Liu and Eric D. Salin. Tungsten-tube Electrothermal Atom- izer WETA-90. Part 1. Design and Performance of the Atomizer- Vaclav Sychra Jiri Delezal Robert Hlavac Libor Petros Olga Vyskoci- lova Dana Kolihova and Petr Puschel Inserted Injector Tubes for Induc- tively Coupled Plasma Spectro- metry-L.Gervais and Eric D. Salin Study of Precision and Bias in the Measurement of Lead Isotope Abun- dance Ratios by Inductively Coupled Plasma Mass Spectrometry- Michael E. Ketterer Michael J. Pet- ers and Preston J. Tisdale Platform in Furnace Zeeman Atomic Absorption Spectrometric Determi- nation of Arsenic in Beer by Slurry Atomization of Sample Ashes-M. L. Cervera A. Navarro R. Montoro M. de la Guardia and A. Salvador Investigations on the Determination of Chloride and Bromide by Means of Furnace Atomic Non-thermal Excita- tion Spectrometry and Furnace Ionic Non-thermal Excitation Spectro- metry-Klaus Dittrich Bernhard Radziuk and Bernhard Welz Shadow Spectral Filming-A Method of Investigating Electrother- mal Atomization. Part 1. Dynamics of Formation and Structure of the Absorption Layer of Thallium In- dium Gallium and Aluminium Atoms-A. K. Gilmutdinov Y. A. Zakharov V. P. Ivanov and A. V. Voloshin Multi-element Analysis of Ferro- chromium and Ferromanganese by Inductively Coupled Plasma Atomic Emission Spectrometry-Ivan Hlavh- Eek and Irena HlavCEklova