analytical chemistry - ACS Publications - American Chemical Society

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ANALYTICAL CHEMISTRY Consecutive Number 8

Issued A p r i l 2 3 , 1 9 4 7

Volume 1 9 , Number 4

EDITOR: W A L T E R J. M U R P H Y Assistant to Editor: N . A . PARKINSON

Assistant Editors

Advisory

Executive Editor: JAMES M . CROWE

Manuscript Editing: G . GLADYS GORDON

Associate Editor: LAWRENCE T. HALLETT

Manuscript Reviewing: STELLA ANDERSON

Contributing Editor: R. H . MÜLLER

Make-up:

R. J. B. T.

C H A R L O T T E C. SAYRE

Analytical Edition, Industrial and Engineering Chemistry

P. R. L. R.

Board

G. Ε. F. LUNDELL CHAPMAN M. G. M E L L O N CHURCHILL R. H. MÜLLER CLARKE C U N N I N G H A M B. L. OSER H. H. WILLARD

Copyright 1947 by American Chemical Society

Local Section Activities of Analysts—Editorial

217

Melting Point Calorimeter (or Purity Determinations . . . J . G . A s t o n , H . L. Fink, J . W . Tooke, and M . R. O n e s

218

N e w Titrimetric Methods for Thorium C . V . Banks and Harvey Diehl

222

Determination of Methoxyl and Ethoxyl Groups in Acetals and Easily Volatile Alcohols D. O . Hoffman and M . L . W o l f r o m

225

Displacement Method for Sampling Solution Phase of M i x e d Fertilizers L . F. Rader, Jr.

229

Colorimetric Method for Determination of Cobalt in Stainless Steel H . M . Putsché and W . F. M a l o o l y

236

Analysis of Silica-Alumina Cracking Catalysts R. A . Burdett and L. C . Jones, Jr.

238

Determination of Water in Phenol

241

L. R. Pollack

Apparatus for Rapid Conductometric Titrations L. J . Anderson and R. R. Revelle

264

MICROCHEMISTRY Determination of Cadmium O x i d e Suspended in A i r . . H . A . Bewick, A . J . Cruikshank, and F. E. Beamish

269

Detection and Estimation of Microquantities of Cyanide · A . O . Gettler and L. Goldbaum

270

Estimation of Microquantities of Cyanide Joseph Epstein

272

Volumetric Semimicrodetermination of Sulfur in Organic Compounds by Use of Oxygen Bomb E. C. Wagner and S. H . Miles

274

Vitamin Be Group. Extraction Procedures for Microbiological Determination of Vitamin Be J . C. Rabinowitz and Ε. Ε. Snell

277

N O T E S O N A N A L Y T I C A L PROCEDURES Determination of Thiamine and Riboflavin in Presence of Reduced Iron Elmer De Ritter and S. H . Rubin Viscosity and Density of Four Liquefied-Gas Aerosol Solutions Containing D D T * L D. G o o d h u e and A . C . Hazen Determination of Beta-Dicarbonyl Compounds William Seaman, J . T. W o o d s , and E. A . Massed Rapid Gravimetric Determination of Silicon in Aluminum Alloys Philip Lisan and H . L. Katz Color Filters in Filter Photometry

S. S. C o o p e r

Complete Apparatus for Determination of Osmotic Molecular Weights G . D. Sands and B. L. Johnson

243

Apparatus for Continuous Delivery of Liquid at Constant Rate A . R. Richards

281

Micro-Kjeldahl Determination of Nitrogen Robert Ballentine and J . R. Gregg

281

248 CORRESPONDENCE 250

252 254

· ·

283

Second Annual Analytical Symposium, Pittsburgh Section, ACS L. T. Hallett

284

B O O K REVIEWS .

286

A I D S FOR T H E A N A L Y S T

288

The Analyst's Column 261

Published by the American Chemical Society at Easton, Pa. Editorial Headquarters: 1155 16th St., N . W., Washington 6, D. C., telephone, Republic 5 3 0 1 , cable, Jiechem (Washington). Chicago Editorial Branch, 25 East Jackson Blvd., Chicago 4 , III., telephone, Wabash 7376. Houston Editorial Branch, 413 West Bldg., Houston 2, Tex., telephone, Capital 6516. N e w York Editorial Branch, 60 East 42nd St., N e w York 17, N. y . , telephone, Murray H i l l 2-4662. San Francisco Editorial Branch, 24 CaliFornia St., San Francisco 1 1 , Calif., telephone Exbrook 2895. Business Office: American Chemical Society, 1155 16th St., N . W., Washington 6, D. C. Advertising Office: 332 West 42nd St., N e w York 18, Ν . Υ., telephone, Bryant 9-4430. Entered as second-class matter at the Post Office at Easton, Pa., under the Act of March 3, 1879, as 24 times a year—Industrial and Engineering Chemistry monthly on the 1st, Analytical Chemistry monthly on the 15th. Acceptance for mailing at special rate of postage provided for in Section 1103, Act of October 3, 1917, authorized July 13, 1918. The American Chemical Society assumes no responsibility for the statements and opinions advanced by contributors to its publications. Views expressed in the editorials and reports are those of the editors and do not necessarily represent the official position of the American Chemical Society.

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