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News
10:50—77. Chemically Modified Surfaces for Normal Phase Chromatography. R. K. Gilpin, W. R. Sisco.
11:10—78. The Effect of Crown Ethers on the Ion Exchange Behavior of Selected Mono and Divalent Cations II. W. H. Delphin, E. P. Horwitz.
11:30—79. Rapid Liquid Chromatographic Assay of Chloroaniline Isomers. L. Kesner, S. M. Vratsanos.
11:40—80. Differential Temperature Programmed Gas Chromatography. R. Rowan, Jr .
SECTION C Symposium on Chromatography of Polymers Joint with Division of Polymer Chemistry, Inc. {see page 796 A)
WEDNESDAY AFTERNOON SECTION A
Palmer House, Wabash Parlor (3rd Floor) Symposium on Problem Solving: The Analytical Approach D. G. Anderson, Presiding
2:00—81. Problem Solving with Surface Analysis. W. M. Riggs.
2:34—82. Water Quality Monitoring— Some Hows and Whys. J. H. Wiersma.
3:10—Intermission. 3:25—83. Analytical Chemists at the
Launch Pad. H. D. Bennett . 4:00—84. The Use of H.P.L.C. to Es
tablish the Optimum Purification Procedure for a Dye Used in Elec-trophoretic Imaging Devices. T. I. Martin, P. Macbeth.
SECTION Β
Palmer House, Parlor Β (6th Floor) General C. L. Wilkins, Presiding
2:00—85. Clinical Profiling with an Ammonia Gas Electrode Based on an Internal Monovalent Cation Glass Electrode. R. G. Wawro, J. G. Montalvo, Jr.
2:20—86. Demonstration of Cocaine Metabolite in Human Urine by Thin Layer Chromatography. A. E. Finkler.
2:40^87 . A Stopped-Flow Clinical Analyzer Which Uses Immobilized Enzyme Reaction Loops. M. D. Joseph, D. J. Kasprzak, S. R. Crouch.
3:00—88. A New Enzymatic Method
for Measuring Blood Alcohol. F. S. Cheng, G. D. Christian.
3:20—Intermission. 3:40—89. Structural Changes of the
Chemical Constituents of Petroleum During Biodégradation. D. M. Jewel l , L. Petrakis, J. D. Walker.
4:00—90. Simultaneous Quantitative Analysis of Prostaglandin F l c , and F2„ by Mass Fragmentography. A. Ferretti , V. P. Flanagan.
4:20—91. The Use of Histograms for Feature Selection in Carbon N M R Pat tern Recognition. T. R. Brun-ner, C. L. Wilkins.
4:40—92. A General Instrumental Method for the Measurement of Mercury Vapour in Workroom, Stack and Adjacent Atmospheres. G. F. Dowd, J. C. Hilborn.
SECTION C
Symposium on Chromatography of Polymers Joint with Division of Polymer Chemistry, Inc. (see page 796 A)
THURSDAY MORNING SECTION A
Palmer House, Wabash Parlor (3rd Floor) Symposium on Forensic Chemistry M. J. Camp, Presiding
9:00—Introductory Remarks. 9:05—93. The Môssbauer Spectrome
try in the Forensic Characterization of Paint . F. E. Klink, J. D. Nicol, J. H. Liu, G. V. Smith, M. Sapo-roschenko.
9:25—94. X-ray Microanalysis of Physical Evidence. R. C. Briner, C. R. Longwell , D. E. Smith, T. C. Holt.
9:45—95. Identification and Differentiation of Raw Micro Marihuana Sample by Standard and Isotope Ratio Mass Spectrometric Techniques. M. P. Fitzgerald, J. H. Liu, J. D. Nicol , G. V. Smith, R. D. Cole.
10:05—96. Forensic Characterization of Commercial Bond Papers. L. A. Wolfe, C. L. Baskin.
10:25—97. Development of Methods for the Analysis of Some Food Products in Customs Laboratories. M. J. Prager, M. A. Miskiewicz.
10:45—98. The Effect of Environmental Factors on Genetic Markers in Human Bloodstains. H. C. Lee, R. E. Gaensslen, P. R. DeForest , D. Crim.
11:05—99. Identification of Some Positional and Chemical Analogues of Methaqualone. S. A. Angeles, T. A. Dal Cason, Ο. Washington.
The most intelligent microbalance
The new AD-2Z Autobalance with both Autoranging and Autozero
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Call your local Perkin-Elmer sales office, or write Instrument Division, Perkin-Elmer Corporation, Main Avenue, Norwalk, CT 06856.
PERKIN-ELMER
CIRCLE 167 ON READER SERVICE CARD
790 A • ANALYTICAL CHEMISTRY, VOL. 49, NO. 9, AUGUST 1977