JUNE 15, 1989 VOLUME 61 NUMBER 12 Analytical Chemistry EDITOR: GEORGE H. ΜΟRRISΟΝ ASSOCIATE EDITORS: Klaus Biemann, GeorgesGuiochon,Walter C. Herlihy, Robert A. Osteryoung, Edward S. Yeung Editorial Headquarters 1155 Sixteenth St., N.W. Washington. DC 20036 Phone: 202-872-4570 Telefax: 202-872-6325 Managing Editor: Sharon G. Boots Associate Editors: Louise Voress, Mary Warner Assistant Editors: Grace Κ. Lee, Alan R. Newman Editorial Assistant: Felicia Wach Director, Operational Support: C. Michael Phillippe Production Manager: Leroy L. Corcoran Art Director: Alan Kahan Designer: Amy Meyer Phifer Production Editor: Elizabeth E. Wood Circulation: Claud Robinson Editorial Assistant, LabGuide: Joanne Mullican
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