INDUSTRIAL and ENGINEERING CHEMISTRY - ACS Publicationshttps://pubs.acs.org/doi/pdf/10.1021/i760151a700VOLUME 18, NUMBER...
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INDUSTRIAL AND ENGINEERING CHEMISTRY ANALYTICAL EDITION I S S U E D M A R C H 29, 1946
V O L U M E 18, N U M B E R 3
CONSECUTIVE NUMBER 6
EDITOR: W A L T E R J . M U R P H Y Associate Editor:
Assistant to Editor: N. A . PARKINSON
LAWRENCE T. HALLETT
Contributing Editor: R. H . MÜLLER
Assistant Editors Manuscript Editing:
Manuscript Reviewing:
G . GLADYS GORDON
Advisory
STELLA ANDERSON
T. R. CUNNINGHAM G. E. F. LUNDELL M. G. MELLON
R. P. C H A P M A N J. R. CHURCHILL B. L. CLARKE
Boiling Range of Chlorinated Hydrocarbons
Dwight Williams
157
Amperometric Titration of Mercaptans with Silver Nitrate I. M. Kolthoff and W. E. Harris 161 Determination of Tungsten in Silicate Rocks . Ε. Β. Sandell
Make-up: CHARLOTTE C. SAYRE
Board R. H. MÜLLER B. L. OSER H. H. WILLARD
Determination of Tocopherol in Plant Tissue M o n r o e E. W a l l and Edward G . Kelley
198
Method of Evaluating Metal Cleaners Samuel Spring, H o w a r d I. Forman, and Louise F. Peale
201
Fluorometric Attachment for Beckman Spectrophotometer Mary H . Fletcher, Charles E. W h i t e , and M i l t o n S. Sheftel
204
163 MICROCHEMISTRY
Equations
of
Viscometer
Thixotropic
Breakdown
for
Rotational
. . . Henry Green and Ruth N . Weltmann
Measurement of Small-Angle X-Ray Scattering
167
Spectrophotometric Determination of Traces of Nickel . . O. R. Alexander, Edith M . Godar, and N . J . Linde
172
Amperometric Microtitration of V e r y Dilute Chromate Solutions J. M. Kolthoff and D. R. May 208
. . . .
M . H . Jellinek, Ernest Solomon, and I. Fankuchen Polarographic Determination of Acetaldehyde Philip J . Elving and Emile Rutner
176
Determination of Beryllium in Ores . . . Mary H . Fletcher, Charles E. W h i t e , and M i l t o n S. Sheftel
184
Quantitative Determination of Ergosterol, Cholesterol, and Frances W . Lamb,
Alexander M u e l l e r , and George W . Beach
209
Modified All-Dithizone Method for Determination of Traces of Copper . S. L. Morrison and Harriet L. Paige
211
N O T E S O N A N A L Y T I C A L PROCEDURES
Determination of Inorganic Phosphorus in Plant Materials . .
7-Dehydrocholesterol
Rapid Estimation of Rubber in Guayule Latex Disper sions R. T. Whittenberger and B. A . Brice
179
» W . A . Pons, Jr., and John D. Guthrie
206
187
Simple Automatic Control for Vacuum Systems . . . . J . J. Spadaro, H . L. E. V i x , and E. A . Gastrock
214
Absorption Spectrum of Antimony Trichloride-Ergosterol Reaction Product Alexander Mueller
214
Large-Size Laboratory Soxhlet Extractor Ralph Salkin and Irving A l l a n Kaye 215
N e w Method for Determination of Manganese James J. Lingane and Robert Karplus 191
B O O K REVIEWS
216
Fractional Separation of Hafnium and Zirconium by Means of Triethylphosphate
. H . H . W i l l a r d and Harry Freund
195
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Published by the American Chemical Society at Easton, Pa. Editorial Headquarters: 1155 16th Street, N . W., Washington 6, D. C ; telephone. Republic 5 3 0 1 ; cable, Jiechem (Washington). N e w York Editorial Branch: 60 East 42nd Street, N e w York 17, N. y . ; telephone, Murray Hill 2-4662. Chicago Editorial Branch: Room 819, 25 E. Jackson Blvd., Chicago 4, Ill., telephone, Wabash 7376. Business Office: American Chemical Society, 1155 16th Street, N . W., Washington 6, D. C. Advertising Office: 332 West 42nd Street, N e w York 18, N . Y.> 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 Edition monthly on the 1st, Analytical Edition 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. Remittances and orders for subscriptions and for single copies, notices of changes of address and new professional connections, and claims for missing numbers should be sent to the American Chemical Society, 1155 16th Street, N . W., Washington 6,
Instrumentation in Analysis
. . R. H . M ü l l e r (Advt. Sect.)
29
We acknowledge with thanks the action of J. T. Baker Chemical Co. in releasing the front cover of this issue for editorial purposes. Copyright 1946 by American Chemical Society. 37,200 copies of this issue printed.
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