CONTRIBUTED ARTICLES Electrochemical Fractionation: Potentiostatic Chromatography and Elution Voltammetry. D. κ.
Aids for the Analyst 2371
Roe
X-Ray Fluorescence Spectrometric Analysis of Rubidium(l) and Cesium(l) Salts of 5-Nitrobarbituric Acid.
K. E. Dougherty, M. W. Goheen, R. J.
Robinson, and J. I. Mueller
Use of Anhydrous Cobaltous Bromide as a Stand ard in Cobalt Analysis. J.O.Page
2377
Silver Chloride Disk Technique for Infrared Spectra of Aqueous Polymer Suspensions. R. K. Metiler .
2378
2372
Porous Glass as an Adsorbent for Thin Layer Chromatography.
Catalyzed Copper-Copper O x i d e Flame Reactions of Selected Organohalogens in the Presence of M e t h a n e and Air.
E. A. Eads and D. A. Payne, Jr. . .
J. K. G. Kramer, Ε. Ο. Schiller,
H. D. Gesser, and A. D. Robinson
2379
2373
A Rapid-Scan Far Ultraviolet Spectrophotometer for Monitoring Gas Chromatograph Effluent. Simple Variable-Temperature Sample Inlet for Beckman G C - 2 Gas Chromatograph. T. F. Kelley 2374
Wilbur Kaye and Frank Waska
2380
Oscillometric Titrations of Air-Sensitive Substances. R. E. Cuthrell and J. J. Lagowski
Determination of V a n a d y l Porphyrins by Demetalation with Hydrogen Bromide-Formic Acid. J. M. Sugihara and R. G. Garvey
Nicotinylhydroxamic and
Titanium(IV).
2374
Acid Chelates of Uranium Ronald
Rowland
Meloan
and
C.
2382
Drop-Time Trigger for Synchronization of Delay and Timing Circuits with the Drop-Rate of Dropping Mercury Electrode, R. C. Propst and M. H. Goosey .
2382
A Spring Microbalance for Magnetic Susceptibility Adsorption and Thermogravimetric Studies.
E. 2376
I. N. Mulay and L. K. Keys
2383
• Kinney Triplex pumps eliminate m No heavy foundations required — vibration. Ideal for mobile applications. • Available in standard models from m Safe on any floor that will bear 150 to 850 cfm. pump weight. • Vacuum below 10 microns.
300 cfm
New balancing technique exclusive in Kinney Triplex pumps has eliminated vibration from high volume vacuum pumping. Operates for longer periods of time at abnormally high suction pressures. Modern compact design reduces floor space requirement.
KINNEY VACUUM
®
Circle No. 66 on Readers' Service Card
6 A
·
ANALYTICAL CHEMISTRY
DIVISION THE NEW YORK AIR BRAKE COMPANY 3529 WASHINGTON STREET, BOSTON 30, MASS.
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