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ANALYTICAL Volume 22, No. 7

CHEMISTRY

Copyright 1950 by American Chemical Society

Issued July 18,1950

EDITOR: WALTER J. MURPHY Executive Editor: JAMES M. CROWE

Associate Editor: LAWRENCE T. HALLETT

Assistant to Editor: N. A . PARKINSON

Contributing Editor: R. H. MÜLLER

Assistant Editors

Editorial Assistants

Manuscript Editing: G. GLADYS GORDON Manuscript Reviewing: STELLA ANDERSON Make-up: CHARLOTTE C. SAYRE

DOROTHY M. ADAMS

KATHERINE I. BIGGS

RUTH CORNETTE 849

EDITORIAL

Advisory Board Κ. Κ. CHEN

R. H. MÜLLER

P. J. ELVING

B. L. OSER

W. A. KIRKLIN

C. J. RODDEN

EILEEN F. GILLESPIE

I. M.

ALBERTA L. KELVIE

H. A. LAITINEN

KOLTHOFF

W. J. SWEENEY

BETTY V. KIEFFER

M. G. MELLON

EDWARD WICHERS

J. W. STILLMAN

Simultaneous Determination of Ethylene and Propylene Chlorohydrlns . . . W . A . Cannon 928

Separation of Cracked Gasolines by Chromatographic Adsorption D. F. Fink, R. W . Lewis, and F. T. Weiss Adsorbent Characteristics and Regeneration Techniques

Determination of Surface-Active Substances in Refined Sugar . Ivan Vavruch

930

Determination of Cerium

A . J. Freedman and D. N . Hume

932

Color Reaction between Beryllium and Aurfn Tricarboxylic Acid . . . . G. E. Kosel and W . F. Neuman

936

864

Instrumental Improvements for Microdetermination of Protein-Bound Iodine In Blood A . L. Chaney

939

Separation of Nitrogen Compound· by Adsorption from Shale OH . . . J. R. Smith, C. R. Smith, Jr., and G. U . Dinneen 867

Determination of Milligram Quantities of Vanadium In Presence of Uranium R. H. Gaie and Eve Mosher

942

850

Factors Affecting Efficiency of Separation

858

Adsorption Symposium Chromatographic Analysis of Gas O I U I w Hydrocarbon Types . . . . . R. J. Clerc, C. B. Kincannon, and T. P. Wier, Jr.

Adsorption Analysis by Displacement Techniques . . . . . . . . . . G. U. Dineen, C. J. Thompson, J. R. Smith, and J. S. Ball Evaluating Petroleum Residua and Lubricating O i l Distillates

Analysis of Natural Gas

871

Coulometric Titrations with Chlorine

876

L. C. W . Baker and T. P. McCutcheon Nomograph for Thermometer Temperature Correction . P.J.Cole

Martin Shepherd 881

Determination of Sulfur Dioxide in Presence of Sulfur Trloxlde Sydney Atkin Purification of Nlnhydrin by Crystallization P. B. Hamilton and P. J. Ortiz

948

KJeldahl Microdetermination . . . . R. M . Silverstein and R. Perthel, Jr.

949

Martin Shepherd 885 . . .

P. S. Farrlnston and Ε. Η. Swift

Use of Physical Constants In Analysis Ε. Η. Gilmore, Marie Menaul, and V . Schneider Coulometric Titration· with Electrically Generated Ferrous Ion W . D. Cooke and Ν . Η. Furman

889

B. J. Thornton and J. C. Speck, Jr.

892

947

B. J. White, N . F. Witt, J. A . Biles, and C. F. Poe 950 Test for Sediment in Fuel O i l by Extraction

B.E.Jackson

952

899

Protective Colloids in Volumetric Determination of Chloride Ion . . . . R. F. Stelzer/E. S. Dillon, and W. C. Vosbursh Photometric Method for Estimation of Minute Amounts of Mercury . . . C. W . Zuehlke and A . E. Ballard

952

R. G. Russell 904

Theimomagnetic Determination of Hagg Carbide in Used Iron Fiteher-Troptch Catalysts L. J. E. Hofer and E. M . Cohn 907 Titration of Nitric Acid in Solutions of Aluminum Nitrate W. J. Blaedel and J. J . Panos 910 Useful Relations for Countcrcurrent Distribution Computation» P. L. Nichols, Jr. 915 Rapid Methods for Determining Fluoride in Waters ,

946

896

. . A . A . Forist and J. C. Speck, Jr. 902

Spectrochemieal Analysis of Brine

944

Optlcal-Crystallographlc Identification of Sulfanilamide

Fluoromettic Determination of Pyruvaldehyde

Fluoromettic Determination ol Acetol

NOTES O N A N A L Y T I C A L PROCEDURES Separation and Determination of Cobalt in Présence of Nonvolatile Radicals

N . W. Furby

Analysis of Carbureted Water Gas by Volumetric Chemical Methods and by Mass Spectrometer

MICROCHEMISTRY

W . E . Thrun 918

Punched Card Catalog of Mass Spectra Useful in Qualitative Analysis . . . P. D. Zemany 920 Identification of Esters of Monobasic Acids by Use of Ethanolamlne . . . . W. H. Rauscher and D. L. MacPeek 923 Determination of Oxygen in Metal Oxides and Sulfides by Reaction with Sulfur Vapor F. T. Eggertsen and R. M . Roberts 924 Determination of Small Amounts of Silicon In Cathode Nickel

G. V. Potter 927

The American Chemical Society assumes no responsibility for the statements and opinions advanced by contributors to its publications. Views expressed in the editorials are those of the editors and do not necessarily represent the official position of the American Chemical Society. Published by the American Chemical Society, from 20th and Northampton Sts., Easton, Pa. Executive Offices, Editorial Headquarters, arid Circulation Department, 1155 Sixteenth St., N . W., Washington 6, D. C. Advertising Office: 332 West 42nd St., N e w York 18, Ν . Υ. Branch Editorial Offices: Chicago 4, I I I . , Room 819, 25 East Jackson Blvd., Houston 2, Tex., 424 West Bldg.; N e w York 17, Ν . Υ., 60 East 42nd St.; San Francisco 2, Calif., Room 454, 760 Market St. Entered as second-class matter at the Post Office at Easton, Pa., U.S.A., February 18, 1948, under the A c t of March 3, 1879, as 12 times a year monthly on the 15th. Acceptance for mailing at special rate of postage provided for in Section 1103, A c t of O c t . 3, 1917, authorized July

953

Society for Applied Spectroscopy

956

Symposium on Thin Films

958

Corrections CRYSTALLOGRAPHY D A T A CORRESPONDENCE

945, 951 W . C. McCrone

954 955

BOOK REVIEWS

956

THE ANALYST'S CALENDAR

959

AIDS FOR THE A N A L Y S T

960

THE ANALYST'S C O L U M N

9 A

INSTRUMENTATION

R. H. Muller 15 A

NEW PRODUCTS FOR ANALYSTS

19 A

MANUFACTURERS' LITERATURE

23 A

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