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Chro matoq raphy Notes CHROMATOGRAPHY NOTES
New quarterly edition an update on solving chromatographic separations better and faster (in minutes instead of in hours). This authoritative and vital resource from Waters features a p p l i c a t i o n news, abstracts of new publications for your library and offers of selected laboratory aids for practicing chromatographers. There's more! Send today for your copy of the current "Chromatography N o t e s . " No o b l i g a t i o n , of course.
Contents
Gravimetric Method for the Determination of Some Cryptating Agents. W. H. Mullerand Jacqueline Beaumatin 2218
Direct Evidence of Ketones in Oxidized Asphalts. S. M. Dorrence, F. A. Barbour, and J. C. Petersen 2242
Feasibility Study of the Gaussian Curve Resolution Technique for the Analysis of Transition Metal Visible Absorption Spectra. H. A. Kuska, D. H. Beebe, and F. L. Urbach 2220
Correspondence
Potassium Ion Responsive Coated Wire Electrode Based on Valinomycin. ft W. Cattrall, S. Tribuzio, and Henry Freiser 2223
Aids for Analytical Chemists
Gas Chromatographic Separation of Styrene in the Presence of Xylenes and Propylbenzenes. D. M. Ottenstein, D. A. Bartley, and W. R. Supina 2225
Solid State Computer Interface and Update Unit for Existing Perkin-Elmer Double Beam Atomic Absorption Spectrophotometers. Quentin Bristow 2246
Quantitative Analysis of a Multicomponent Analgesic Product Containing Butalbital, Using High Speed Reverse-Phase Liquid Chromatography. Daniel Rosenbaum 2226
Coating Reservoir for Making Porous Layer Open Tubular Gas Chromatography Columns. J. G. Nikelly 2249
Electrochemical Determination of Arylhydroxylamines in Aqueous Solutions and Liver Microsomal Suspensions. L. A. Sternson 2228 Thin Layer Chromatographic and Colorimetric Methods for Monitoring the Purity of S-2-(3-aminopropylamino)ethylphosphorothioic acid (WR-2721). L. C. Washburn and R. L. Hayes 2231 Mass Fragmentographic Assay for A 9 -Tetrahydrocannabinol in Plasma. J. J. Rosenfeld, Bob Bowins, Jeff Roberts, John Perkins, and A. S. Macpherson 2232 New Soft X-Ray Method for Determining the Chemical Forms of Sulfur in Coal. R. G. Hurley and E. W. White 2234
WATERS ASSOCIATES 137 Maple Street, Milford, Mass. 01 757 Telephone (617) 478-2000 The Liquid Chromatography
People
Stability of Weak Sodium Thiosulfate Solutions. B. W. Durham 2245
Safe and Simple Method for the Disposal of Mercury-Containing Wastes from Kjeldahl Analyses. M. J. Mima 2250 Simple Density Apparatus for Gas-Liquid Chromatography Stationary Phases, ft J. Laub and ft L. Pecsok 2251 Ion-Selective Electrode Detector for Ion-Exchange Liquid Chromatography. F. A. Schultz and D. E. Mathis 2253 Water-Cooled Condenser for Unattended Operations. D. J. Stanonis
2255 Improved Absorption Tube for Arsenic Determinations. S. C. Elliott and B. ft Loper 2256 Spectrometry Nomenclature
2257
Retention Volume Equation for Frontal Chromatography Corrected for Gas Phase Viscosity Effects. C. L. Hussey and J. F. Parcher 2237
Guide for Use of Terms in Reporting Data in ANALYTICAL CHEMISTRY 2258 Manuscript Requirements
2259
Atomic Absorption of Rhenium Using a Neon Analysis Line. R. J. Lovett and M. L. Parsons 2241
Author Index
2263
Keyword Index
2281
CIRCLE 247 ON READER SERVICE CARD
1192 A · ANALYTICAL CHEMISTRY, VOL. 46, NO. 14, DECEMBER 1974
