iv Online access to the world’s An a I y t i ca I Abstracts ONLINE I I Analytical Abstracts Online ... is the online equivalent of hard copy Analytical Abstracts, the western world’s most comprehensive abstracting journal dealing solely with analytical chemistry in all its aspects, Analytical Abstracts Online ... contains bibliographic information on general, inorganic, organic, biochemical, pharmaceutical, food, agricultural and environmental aspects of analytical chemistry, including computer and instrumentational applications in analysis. Analytical Abstracts Online m m . offers: 0 Comprehensive coverage of analytical chemistry 0 Coverage 1980-to date : over 70,000 items 0 Analytical methods in high detail 0 Quality controlled language indexes 0 Easy access via DATA-STAR, (Plaza Suite, 114 Jermyn Street, London SW1Y 6HJ); and PERGAMON INFOLINE Ltd., (1 2 Vandy Street, London EC2A 2DE).For further information contact your chosen host direct or write to:- The Royal Society of Chemistry, The University, Nottingham, NG7 2RD. Tel. 0602 50741 1 Telex: 37488 ROYAL lnformat ion ServicesJournal of Analytical Atomic Spectrometry (Including Atomic Spectrometry Updates - Formerly ARAAS) JAAS Editorial Board* Chairman: J. M. Ottaway (Glasgow, UK) J. Brew (London, UK) M. S. Cresser (Aberdeen, UK) L. C. Ebdon (Plymouth, UK) D. L. Miles (Wallingford, UK) B. L. Sharp (Aberdeen, UK) M. Thompson (London, UK) A. M. Ure (Aberdeen, UK) *The JAAS Editorial Board reports to the Analytical Editorial Board, Chairman J. D. R. Thomas (Cardiff, UK) JAAS Advisory Board F.C. A d a m (Antwerp, Belgium) R. M. Barnes (Amherst, MA, USA) L. Bezur (Budapest, Hungary) R. F. Browner (Atlanta, GA, USA) S. Caroli (Rome, Italy) L. de Galan (Delft, The Netherlands) J. B. Dawson (Leeds, UK) K. Dittrich (Leipzig, GDR) W. Frech (Umed, Sweden) K. Fuwa (Tokyo, Japan) A. L. Gray (Guildford, UK) S. Greenfield (Loughborough, UK) G. M. Hieftje (Bloomington, IN, USA) G. Horlick (Edmonton, Canada) J. J. LaBrecque (Caracas, Venezuela) J. M. Mermet (Villeurbanne, France) Ni Zhe-ming (Beijing, China) N. Omenetto (lspra, Italy) E. Pl5ko (Bratislava, Czechoslovakia) R. Sturgeon (Ottawa, Canada) A. Walsh,,,K. B. (Victoria, Australia) B. Welz (Uberlingen, FRG) T. S. West (Aberdeen, UK) Atomic Spectrometry Updates Editorial Board Chairman: *M.S. Cresser (Aberdeen, UK) R. M. Barnes (Amherst, MA, USA) N. W. Barnett (Plymouth, UK) *J. Brew (London, UK) *A. A. Brown (Cambridge, UK) J. C. Burridge (Aberdeen, UK) J. B. Dawson (Leeds, UK) *L. C. Ebdon (Plymouth, UK) H. J. Ellis (Ross-on-Wye, UK) J. Fijalkowski (Warsaw, Poland) D. J. Halls (Glasgow, UK) S. J. Haswell (London, UK) *D. A. Hickman (London, UK) G. M. Hieftje (Bloomington, IN, USA) H. Hughes (Anglesey, UK) P. N. Keliher (Villanova, PA, USA) K. Kitagawa (Nagoya, Japan) C. W. McLeod (Sheffield, UK) K. W. Jackson (Saskatoon, Canada) F. J. M. J. Maessen (Amsterdam, The Nether- *D. Littlejohn (Glasgow, UK) lands) *J. Marshall (Middlesbrough, UK) J. M. Mermet (Villeurbanne, France) E. Norval (Pretoria, South Africa) I. Novotny (Bmo, Czechoslovakia) P.E. Paus (Oslo, Norway) P. R. Poole (Hamilton, New Zealand) T. C. Rains (Washington, DC, USA) J. M. Rooke (Leeds, UK) G. Rossi (lspra, Italy) I. RubeSka (Prague, Czechoslovakia) *B. L. Sharp (Aberdeen, UK) W. Slavin (Norwalk, CT, USA) R. D. Snook (London, UK) R. Stephens (Halifax, Canada) J. Stupar (Ljubljana, Yugoslavia) A. Taylor (Guildford, UK) M. Thompson (London, UK) *A. M. Ure,(Aberdeen, UK) B. Welz (Uberlingen, FRG) J. B. Willis (Victoria, Australia) *D. L. Miles (Wallingford, UK) *J. M. Ottaway (Glasgow, UK) *Members of the ASU Executive Committee ~~ Editor, JAAS: Judith Brew The Royal Society of Chemistry, Burlington House, Piccadilly, London W1V OBN, UK. Telephone 01-734 9864. Telex No. 268001 US Associate Editor, JAAS: Dr. J. M. Harnly US Department of Agriculture, Beltsville Human Nutrition Research Center, BLDG 161, BARC-EAST, Beltsville, MD 20705, USA.Telephone 301 -344-2569 Advertisements: Advertisement Department, The Royal Society of Chemistry, Burlington House, Piccadilly, London W1V OBN. Telephone 01-437 8656. Telex No. 268001 Journal ofAnalytical Atomic Spectrometry (JAASI (ISSN 0267-9477) is published bimonthly by The Royal Society of Chemistry, Burlington House, London W1V OBN, UK. All orders accompanied with payment should be sent directly to The Royal Society of Chemistry, The Distribution Centre, Blackhorse Road, Letchworth, Herts. SG6 1HN. UK. 1986 Annual subscription rate UK f165.00, Rest of World €182.00, USA $319.00. Air freight and mailing in the USA by Publications Expediting Inc., 200 Meacham Avenue, Elmont, NY 11003. USA Postmaster: send address changes to Journal o f Analytical Atomic Spectrometry (JAAS), Publications Expediting Inc., 200 Meacham Avenue, Elmont, NY 11003.Second class postage pending at Jamaica, NY 11431. All other despatches outside the UK by Bulk Airmail within Europe, Accelerated Surface Post outside Europe. PRINTED IN THE UK. @The Royal Society of Chemistry, 1986. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form, or by any means, electronic, mechanical, photographic, recording, or otherwise, without the prior permission of the publishers. nformation for Authors :uII details of how to submit material for )ublication in JAASare given in the Instructions o Authors in Issue 1.Separate copies are ivailable on request. The Journal of Analytical Atomic Spectrometry JAAS) is an international journal for the publi- :ation of original research papers, short papers, :ommunications and letters concerned with the levelopment and analytical application of itomic spectrometric techniques. The journal Nil1 be published bimonthly, will include com- Jrehensive reviews of specific topics of interest :o practising atomic spectroscopists and will ncorporate the literature reviews which were previously published in Annual Reports on Analytical Atomic Spectroscopy (ARAAS). Manuscripts intended for publication must describe original work related to atomic spec- trometric analysis. Papers on all aspects of the subject will be accepted, including fundamental studies, novel instrument developments and practical analytical applications.As well as AAS, AES and AFS, papers will be welcomed on atomic mass spectrometry and X-ray fluoresc- enceiemission spectrometry. Papers describing the measurement of molecular species where these relate to the characterisation of sources normally used for the production of atoms, or are concerned, for example, with indirect methods of analysis, will also be acceptable for publication. Papers describing the development and applications of hybrid techniques (e.g., GC-coupled AAS and HPLC - ICP) will be parti- cularly welcome. Manuscripts on other subjects of direct interest to atomic spectroscopists, including sample preparation and dissolution and analyte preconcentration procedures, as well as the statistical interpretation and use of atomic spectrometric data will also be accept- able for publication.There is no page charge. The following types of papers will be con- Full papers, describing original work. Short papers, also describing original work, but of limited breadth of subject matter. Communications, which must be on an urgent matter and be of obvious scientific importance. Communications should not be simple claims for priority: this facility for rapid publication is intended for brief descriptions of work that has progressed to a stage at which it is likely to be valuable to workers faced with similar problems. Reviews, which must be a critical evaluation of the existing state of knowledge on a parti- cular facet of analytical atomic spectrometry.Every paper (except Communications) will be submitted to at least two referees, by whose advice the Editorial Board of JAAS will be guided as to its acceptance or rejection. Papers that are accepted must not be published else- where except by permission. Submission of a manuscript will be regarded as an undertaking that the same material is not being considered for publication by another journal. Manuscripts (three copies typed in double spac- ing) should be addressed to: sidered. Editor, JAAS Judith Brew The Royal Society of Chemistry, Burlington House, Piccadilly, London W1V OBN, UK US Associate Editor, JAAS Dr. J. M. Harnly US Department of Agriculture, Beltsville Human Nutrition Research Center, 8LDG 161, BARC-EAST, Beltsville, MD 20705, USA or All queries relating to the presentation and submission of papers, and any correspondence regarding accepted papers and proofs, should be directed to the Editor or US Editor (addresses as above). MembersoftheJAASEditorial Board (who may be contacted directly or via the Editorial Office) would welcome comments, suggestions and advice on general policy mat- ters concerning JAAS. Fifty reprints of each published contribution are supplied free of charge.