QUALITY INSTRUMENTS
NEWS
For Analysis and Research For
ANALYTICAL CHEMISTRY—GENERAL 4:00 p.m. to 5:30 p.m.—Room F
POLAROGRAPHY
Controlled Potential and Derivative Voltammeter Model ORNL Q-1988A Follows design and specifications of ORNL Q - 1 9 8 8 polarograph ( c f . Anal. Chen.., 3 1 , 1 4 7 5 ( 1 9 5 9 ) and 3 2 , 1 2 6 2 ( 1 9 6 0 ) ) ALL electronic—uses plug-in operational amplifiers · Com pensates for cell resistance (3 electrodes) · Parallel-T filter for complete damping of DME oscillations · Peak follower for maximum current measurements · Linear residual current com pensator · Reversible scanning direction · Derivative-taking circuitry · Superior to conventional instruments at high and low concentrations.
For
COULOMETRY
Automatic Controlled Potential Coulometric Titrator Model ORNL Q-2005-X50-100 Follows design and specifications of ORNL Q - 2 0 0 5 - X 5 0 coulometric titrator ( c f . Anal. Chem., 3 1 , 4 8 8 , 9 5 6 (1 9 5 9 ) ) • All electronic—uses plug-in operational amplifiers • Three electrodes—either anode or cathode may be con trolled versus reference electrode · Electronic circuit ac curately integrates cell current · Automatic or manual shut off * Approximate range; 0 . 0 0 1 to 4 0 coulombs (ca. 0.1 to 1 0 0 mg.) · Quantitative oxidations or reduc tions · Applications include many inorganic ions and some organic compounds.
II
Sigurd O . Rue, Ethyl Corporation Research Laboratory, Presiding
4:00 Determination of Trace Amounts of Vanadium in Steels and Cast Irons by Amperometric Titration. Frederick P. Valcnte and George H . Carey, U. S. Army Materials Research Agency, Watertown, Mass. 4:20 Cumulative Coulographic Titrimetry. I. Principles. II. Some New Light on Mercury Catalysis in the Halogenation of Unsaturated Com pounds. Titrations with Electrogenerated Bromine Monochloride. Stan ley T . Hirozawa, Wyandotte Chemicals Corp., Wyandotte, Mich. 4:45 Reactions in Concentrated Lithium Chloride Solutions: Deter mination of Free Acid and Hydrolyzable Metal. Hisashi Kubota, Oak Ridge National Laboratory, Oak Ridge, Tenn. 5:05 Radio-Release Methods for the Evaluation of Atmospheric Pollution. H. H. Ross, Oak Ridge National Labo ratory, Oak Ridge, Tenn.
Write for Full Details
INDIANA
INSTRUMENT a n d C H E M I C A L C O R P . Box 37 · Bloomington, Indiana
Thursday Morning, October 22 SYMPOSIUM
O N POLAROGRAPHY
8:45 a.m. to 12:30 p.m.—Auditorium Circle No. 18 on Readers' Service Card Paul K. W i n t e r , General Laboratories, Presiding
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66 A
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ANALYTICAL
CHEMISTRY
Motors Research
8:45 Recent Developments in Strip ping Analysis. Irving Shain, Univer sity of Wisconsin, Madison, Wis. 9:20 The Application of Derivative Techniques to Anodic Stripping Voltametry. S. P. Perone and J. R. Birk, Purdue University, Lafayette, Ind. 9:40 Stripping and Voltammetric D e termination of Manganese via Man ganese Dioxide. Calvin Huber, Uni versity of Wisconsin, Milwaukee, Wis. 10:00 Second Derivative DC-Polarography as a Technique in Quantitative Polarographic Measurements. W. L. Belew, J. D . Fisher, and M . T . Kelley, Oak Ridge National Laboratory, Oak Ridge, Tenn. 10:20 Pulse Polarography. E . P . Parry, R. A. Osteryoung, and H . Schlein, North American Aviation Science Cen ter, Thousand Oaks, Calif. 11:10 Recent Developments in Lanthanide Ion Polarography. Andrew Timnick, R. F . Large, and R. O'Donnell, Michigan State University, East Lan sing, Mich. 11:30 Polarographic Reduction of Pyridinium Ion in Pyridine. Application to the Determination of Bronsted and Lewis Acids. Michael S. Spritzer, Jose M. Coste, and Philip J. Elving, Univer sity of Michigan, Ann Arbor, Mich. 11:50 Electrooxidation of Tetraphenylborate Ion at the Pyrolytic Graphite Electrode. W. Richard Turner and Philip J. Elving, University of Michi gan, Ann Arbor, Mich. 12:10 The Polarographic Behavior of Molybdenum(VI) Acidic Chloride Media. G. A. Rechnitz and J. Wittick, University of Pennsylvania, Philadel phia, Pa.
