Briefs
Improvements in the Wet Oxidation-Dithizone Method for Determining Low Mercury Levels in Food When t w o or more weighed s a m p l e s are t a k e n for wet oxi d a t i o n , t h e p r o c e d u r e is a d a p t e d for t h e d e t e r m i n a t i o n of less t h a n 0.05 p p m H g in foodstuffs. Michal Nabrzyski, Department of Bromatology, Faculty of Pharmacy, Medical Academy, Gdansk, Poland Anal. Chem., 45, 2438(1973) Optical-Crystallographic Properties of/3-D-Glucose For microscopic analysis of i m p u r e m i x t u r e s of β- a n d aD-glucose, t h e sign of elongation m a y be u s e d . Very s m a l l crystals a r e d i s t i n g u i s h e d w i t h a first order red p l a t e . George R. Dean, Miles Laboratories, Inc., Elkhart, Ind. 46514 Anal. Chem., 45, 2440(1973)
Aids for Analytical Chemists
Simple Means of Semiautomation of Kinetic Studies as Performed by Conduction Calorimetry W. J. Evans, E. J. McCourtney, and V. L. Frampton, Southern Regional Research Laboratory, Southern Region, Agricultural Re search Service, P.O. Box 19687, New Orleans, La. 70179 Anal. Chem., 45, 2443 (1973)
Computerized Digital Data Acquisition System for Thermogravimetry and Similar Applications Glauco Romeo, Eric Lifshin, Michael F. Ciccarelli, and Don ald B. Sorensen, Corporate Research and Development, General Electric Company, Schenectady, N.Y. 12301 Anal. Chem., 45, 2444 (1973)
New Stirring Method for Microtitration
Teflon Modification of a Hanging Mercury Drop Electrode for Stripping Voltammetry in GlassCorrosive Media D. R. Canterford and A. B. Waugh, Department of Chemistry, University of Melbourne, Parkville 3052, Melbourne, Australia Anal. Chem., 45, 2442(1973)
J. R. Walsby, Marine Research Laboratory, University of Auck land, R. D. Leigh, New Zealand Anal. Chem., 45, 2445 (1973)
Fluorescent Integrating Radiation Dosimeter W. A. Salmon and E. A. Chandross, Bell Laboratories, Murray Hill, N.J. 07074 Anal. Chem., 45, 2446 (1973)
SAUTER 8 0 FIFTH AVE., NEW YORK, N.Y.
CIRCLE 3 ON READER SERVICE CARD ANALYTICAL CHEMISTRY, VOL. 45, NO. 14, DECEMBER 1973 · 1179 A
