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Environmental Science & Technology ES&T offers peer-reviewed research and a magazine section — ensuring you that each monthly issue covers all areas of science and engineering in the environmental field. You'll gain access to the very best minds ... top environmental science

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Timely. Detailed. Thorough. ES&T standards are the highest in die discipline, without exception. Plus, ES&T presents hard facts on every aspect of die environment, included in these regular features: • RESEARCH

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News briefs on topics that are statewide, federal, and international in scope. Awards are also noted in this popular section.

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Reports of changes in the state and federal regulatory picture and how those changes may affect your operation.

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Too much is happening in the field of environmental science! Don't go without your monthly issues of ES&T. ACS Guarantee: If you are not satisfied with your ES&T subscription, you may cancel at any time and receive a refund for all undelivered issues. No questions asked! 1 9 9 2 S U B S C R I P T I O N RATES V o l u m e 26, ISSN: 0013-936X

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Editor: William H. Glaze, University of North Carolina, Chapel Hill Associate Editors: W. Giger, EAWAG, Switzerland; R.A. Hites, Indiana Univ.; J.L. Schnoor, Univ. of Iowa; J.H. Seinfeld, California Inst, of Tech.; J.M. Suflita, Univ. of Oklahoma, Norman

In a hurry? Call TOLL FREE (800) 333-9511 (U.S. only). For Orders outside the U.S. call (614) 447 3776 or FAX your order (614) 447-3671. ANALYTICAL CHEMISTRY, VOL. 64, NO. 10, MAY 15, 1992 · 583 A