J&W SCIENTIFIC, INC

DINOSAUR EITHER. THE PACKED COLUMN. ALTERNATIVE. Briefs. Correspondence. • Easy to Install. • Cost Effective. • One Configuration. Fits All G.C...
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Briefs

BEING BIG DIDN'T SAVE THE DINOSAUR EITHER

Correspondence Isotope-Selective Trace-Element Detection with the Thermionic Diode 1566 Kay Niemax*, Jôrg Lawrenz, Andreas Obrebski, and KarlHeinz Weber, Institut fur Spektroehemie und angewandte Spektroskopie, Bunsen-Kirchhoff-Strasse 11, D-4600 Dortmund, Federal Republic of Germany Anal. Chem., 58 (1986) Determination of Total Nitrogen in Oil Shale 1571 James E. Cooper, Department of Geology, The University of Texas at Arlington, Arlington, Tex. 76019 Anal. Chem., 58 (1986) Macrocyclic Polyamines as Selective Eluting Reagents for Multivalent Anions in Anion Exchange Chromatography 1572 Akinori Jyo* and Kou Yamada, Department of Industrial Chemistry, Faculty of Engineering, Kumamoto University, Kumamoto 860, Japan Anal. Chem., 58 (1986) Electromodulated Ion Exchange Chromatography 1574 Amiya R. Ghatak-Roy and Charles R. Martin*, Department of Chemistry, Texas A&M University, College Station, Tex. 77843 Anal. Chem., 58 (1986)

THE PACKED COLUMN ALTERNATIVE TM

MEGABORE

• Easy to Install • Cost Effective • One Configuration Fits All G.C.s • Highly Reproducible • Highly Inert • Preconditioned & Tested • Bonded Phases

32-PAGE BROCHURE W I T H APPLICATIONS A N D I N F O R M A T I O N

Aids for Analytical Chemists

New Method for Obtaining Transmission Infrared and Visible Spectra of Thin Polymeric Films 1576 Nigel A. Surridge and Thomas J. Meyer*, Department of Chemistry, Venable and Kenan Laboratories, University of North Carolina at Chapel Hill, Chapel Hill, N.C. 27514 Anal. Chem., 58 (1986)

Automated Mercury Film Electrode for Flow Injection Analysis and High-Performance Liquid Chromatography Detection 1578 Hari Gunasingham*, B. T. Tay, and K. P. Ang, Department of Chemistry, National University of Singapore, Kent Ridge, Singapore 0511 Anal. Chem., 58 (1986)

Design of a Pulsed Source for Supercritical Fluid Injection into Supersonic Beam Mass Spectrometry 1581 Ho Ming Pang, Chung Hang Sin, and David M. Lubman*, Department of Chemistry, The University of Michigan, Ann Arbor, Mich. 48109, and Jens Zorn, Department of Physics, The University of Michigan, Ann Arbor, Mich. 48109 Anal. Chem., 58 (1986)

J&W SCIENTIFIC, INC. 3871 SECURITY PARK DRIVE, RAIMCHO CORDOVA, CA 95670 (916) 351-0387

CIRCLE 115 ON READER SERVICE CARD 732 A · ANALYTICAL CHEMISTRY, VOL. 58, NO. 7, JUNE 1986

Flowmeter Based on Measurement of Streaming Potentials 1583 Karin D. Caldwell* and Marcus N. Myers, Department of Chemistry, University of Utah, Salt Lake City, Utah 84112 Anal. Chem., 58 (1986)