Briefs
Conductivity Measurements for the Lab or in the Field
Radiometer's new line of conductivity meters give you a choice. The CDM83 is a precision bench meter with auto matic range and frequency switching. It also measures temperature and automatically compensates to any refer ence point. The CDM83 is microprocessor controlled and features a 20 character alpha/numeric display. An optional module allows connection to a printer or recorder. The CDM80 is a battery powered lightweight meter with heavy weight features. LCD read-out of 5 measuring ranges, auto frequency switching, temperature compensation and re corder output. Optional AC adapter also available. Both meters can be upgraded for conductometric titrations. For full details contact Radiometer America, Inc., toll free 1-800-321-9484. RADIOMETER In Ohio, call 216-871-8900. COPENHAGEN
World Headquarters: Emdrupvej 72, DK2400 Copenhagen, Denmark. In the U.S.: 811 Sharon Drive, Westlake, Ohio 44145 CIRCLE 186 ON READER SERVICE CARD
Probe for in Situ Measurement of Alkalinity and pH in Natural Waters 1180 Einar Hillbom, Jan Lidén*, and Sture Pettersson, Department of Inorganic Chemistry, University of Umeâ, S-901 87 Umeâ, Sweden Anal. Chern.,55 (1983) Determination of Nitrogen- 15/Nitrogen-14 in Nitrate Samples by Conversion to Benzamide 1182 Nigel J. Bunce* and Jon LaMarre, Department of Chemistry, University of Guelph, Guelph, Ontario, Canada NIG 2W1, and Robert L. Merrick and Charles T. Corke, Department of Environmental Biology, University of Guelph, Guelph, Ontario, Canada NIG 2W1 Anal Chem., 55 (1983) Capillary Tube Sealer for Microcell Nuclear Magnetic Resonance Spectrometry 1184 Dale S. Skrabalak and Jack Henion*, Diagnostic Laboratory, New York State College of Veterinary Medicine, Cornell University, 925 Warren Dr., Ithaca, N.Y. 14850 Anal. Chem., 55 (1983) Instrument for Relative Humidity Measurement 1186 Knut Irgum, Department of Analytical Chemistry, University of Umeâ, S-901 87 Umeâ, Sweden Anal. Chem., 55 (1983) Postcolumn Deoxygenator for Liquid Chromatography wfth Reductive Electrochemical Detection 1188 Robert E. Reim, Analytical Laboratories, 1602 Building, The Dow Chemical Company, Midland, Mich. 48640 Anal. Chem., 55 (1983) Mercury-Plated Rotating Ring-Disk Electrode 1191 Padraig J. Daly, David J. Page, and Richard G. Compton*, Department of Inorganic, Physical and Industrial Chemistry, The University of Liverpool, P.O. Box 147, Liverpool L69 3BX, England Anal. Chem., 55 (1983)
Do Y o u Have P r i m a r y Access t o C h e m i s t r y Titles CPACTJ? Y o u and your librarian can receive selected b o o k s r i g h t off t h e p r e s s in s e v e n t e e n s u b j e c t categories f r o m the ACS S y m p o s i u m Series and A d v a n c e s in C h e m i s t r y S e r i e s . For More Information Call the ACS Sales Office Toll Free 1-ΘΟΟ-424-6747 D.C. Area (2D2) B72-BQB5
Effect of Sample Dissolution Procedures on X-ray Spectrometric Analysis of Biological Materials 1193 Peter A. Pella*, Howard M. Kingston, and John R. Sieber, Center for Analytical Chemistry, National Bureau of Standards, Washington, D.C. 20234, and Liang-Yuan Feng, Institute of Geochemistry, Academia Sinica, Guiyang, Guizhou, The People's Republic of China Anal. Chem., 55 (1983) Identification of Cyclic Acetals in Polyols by Mass Spectrometry 1194 Robert A. Sanders, The Procter & Gamble Company, Winton Hill Technical Center, 6071 Center Hill Road, Cincinnati, Ohio 45224 Anal. Chem., 55 (1983) Extraction Efficiency of Anthracene from Sediments 1197 John D. Haddock*, Peter F. Landrum, and John P. Giesy, Savannah River Ecology Laboratory, P.O. Drawer E, Aiken, S.C. 29801 Anal. Chem., 55 (1983)
700 A · ANALYTICAL CHEMISTRY, VOL. 55, NO. 7, JUNE 1983
