CONTENTS
ANALYTICAL CHEMISTRY
EDITORIAL ANALYST'S C O L U M N .
867 .
.
NEWS
READERS'
INFORMATION
SERVICE ANALYST'S CALENDAR
.
39 A
20 A NEW PRODUCTS
20 A
42 A
MANUFACTURERS'
LABORATORY OF THE MONTH
33 A
R. H. Müller
11 A 19 A
1
NEW BOOKS Volume 2 7 , N o . 6
INSTRUMENTATION .
29 A
LITERATURE
51 A
Issued June 1 0 , 1 9 5 5 CopyrigKl 1 9 5 5 by the American Chemical Society
EDITOR: WALTER J. MURPHY Executive Editor: JAMES M. CROWE Science Editor: LAWRENCE T. HALLETT Production Manager: JOSEPH H. KUNEY Associate Editors Robert G. Gibbs Stella Anderson, G. Gladys Gordon, Bertha Reynolds, Charlotte C. Sayre, Ruth Cornette Assistant Editor Katherine I. Biggs Editorial Assistants Betty V . Kieffer, Sue Jones, Ruth C. Laubach, Veronica O'Keefe, Fern S. Jackson, Ruth M . Howorth, Lois J. Bennett Contributing Editor R. H. Müller Advisory Board H . F. Beeghly, G. E. Boyd, A . Q . Butler, Harvey Diehl, N. H. Furman, W. W. Hilty, D. N. Hume, Robert Kunin, S. S. Kurtz, Jr., H. A . Liebhafsky, J. J. Lingane, O . D. Shreve, V . A . Stenger, P. W. West, J. H. Yoe
Scientific and Technical Articles MassSpectrometric Analysis of High Molecular Weight, Saturated Hydrocarbons R. J . Clerc, Archie H o o d , and M . J . O ' N e a l , Jr.
868
Analysis of Fluorinated Polyphenyls by Mass Spectrometer Paul Bradt and F. L. Mohler
875
Direct Spectrophotometry Determination of Uranium in Aqueous Solutions R. G . Canning and P. Dixon
877
Emission Spectrochemical Analysis of Vanadium and Iron in Titanium Tetrachloride H. V . Malmstadt and R. G. Scholz
881
Identification of Frozen Liquid Samples with X-Ray Diffractometer. H . N . Smith and H . H . Heady
883
Quantitative X-Ray Determination of Amorphous Phase in Wood Pulps as Related to Physical and Chemical Properties G . L.Clark and H. C. Terford
888
New Polarographic Electrode Employing Controlled Stirring Paul Arthur, J . C. Komyathy, R. F. Maness, and H. W . Vaughan
895
Polarographic Determination of Nitroglycerin in Double-Base Powder G . C. Whitnack, M . M . MayField, and E. St. C. Gantz
899
Polarographic Determination of Traces of Copper, Nickel, Cobalt, Zinc, and Cadmium in Rocks . . . L. E. Smythe and Β. Μ . Gatehouse
901
Polarographic Determination of Palladium R. F. Wilson and R. C. Daniels
904
Polarogrephy with Platinum Microelectrodes in Fused Salts E. D. Black and Thomas De Vries
906
Flame Photometric Determination of Calcium in Sea Water and Marine Organisms T. J . C h o w and T. G . Thompson
910
Flame Photometric Determination of Strontium in Portland Cement J . J . Diamond
913
Chronometric Method of Determining Polyphenol Oxidase Activity L. L. Ingraham and Benjamin Makower
916 918
Determination of Small and Large Amounts of Fluorine in Rocks F. S. Grimaldi, Blanch Ingram, and Frank Cuttitta
921
Absolute Assay of Beta Radioactivity in Thick Solids A . D. Suttle, Jr., and W. F. Libby Chromatography of Organic Acids in Cured Tobacco F. E. Resnik, L A . Lee, and W . A . Powell
•
9S8 931
Determination of Uranium in Uranium Concentrates R. J . Guest and J . B. Zimmerman
936
Radioisotopic Study of Uranium Separations H . P. Raaen and P. F. Thomason
944 Determination of Hydrocortisone C. R. Szalkowski, M . G. O'Brien, and W . J. Mader 947
This Month's Cover.
An a t -
tractive exterior, dictated by its location in Kansas City's cultural center, belies the "ultimate in utility" which is the keynote of Midwest Research Institute's new $1.25 million laboratory. A basic requirement of keeping costs down to $15 a square foot presented a challenge, as normal costs run from $25 to $40. Some of the means by which this goal was attained without sacrificing basic needs are set forth on page 29 A. M R I ' s basic objectives, those of developing a better balance between industry and agriculture in the Midwest and methods of processing locally produced raw materials, have been followed since M R I started operating 10 years ago in four rented rooms with a few scientists.
Separation and Determination of Thorium and Aluminum C V . Banks and R. E. Edwards 949 Determination of Total Sulfur Content of Sedimentary Rocks by Combustion Method . M . E. Coller and R. K. Leininger 951 Test for Vicinal Dithiol Group D. H . Rosenblatt and G . N . Jean
954
Quantitative Elution of Morphine from Ion Exchange Resins C. H . Van Etten
957
Test for Establishing Residual Safe Life of Stabilized Solid Propellents Carl Boyars and W . G. Gough
961
Fluorimetric Determinations of Aluminum and Gallium in Mixtures of Their Oxinates J. W . Collât and L. B. Rogers Adsorption-Dialysis, Extraction Technique I. R. Hunter, D. F. Houston, and E. B. Kester Improved Plastometer for Studying Agglutinating Behavior of Caking Coals G. L. Barthauer One-Phase Solvent Mixtures for Separation of Amino Acids T. L. Hardy, D. O . Holland, and J . H . C. Nayler Continued on page 4 A
965 969
. . . . 971
Three Great Waco MAGNETIC STIRRERS
the
JUMBO
Five gallon bottles or 1 2 inch jars can be sup ported easily on this 11 " diameter 8 " high stirrer. By f a r , the most powerful magnetic stirrer . . . used for agitating large volumes in closed systems, under vacuum or pressure, for stirring through heating mantles and for viscous solutions. W A C O J U M B O M A G N E T I C STIRRER. Complete w i t h 2 teflon-covered stirrer bars, one %" χ l 3 ^ f f , a n a one %" x lY%. F o r 115 volts, 5-60 cycle AC. $69.50 each.
the Standard Convenient round shape, 6 " diameter, only AVi" high for agitating liquids in closed or open systems, under vacuum or pressure. W A C O S T A N D A R D M A G N E T I C STIRRER. Complete w i t h t w o teflon coated stirring bars, JHi* x %" and % χ 1 } ^ * , m o u n t i n g r o d . F o r 115 volts 5 0 / 6 0 cycles A C . Each $28.50
the Junior Titration stirrer is only 3 V 4 " diameter χ 3 " high . . . ideal size for all titration assemblies. Ideal for micro and semi-micro systems. WACO J U N I O R T I T R A T I O N STIRRER. Complete w i t h monel cased magnetic stirrer w i t h %" plastic m o u n t i n g r o d , teflon b a r "A " ι % ". Each $30.00.
CONTENTS, continued Twenty-Stage Molecular Distillation Unit F. W . Melpolder, T. A . Washall, end J . A . Alexander
974
Determination of Traces of Nickel and Zinc in Copper and Its Salts Louis Meites
977
Microscopic Fusion Study of 2,4,5-Trichlorophenoxyacetic Acid and Related Compounds C. J . Arceneaux
979
Mierodetermination of Chromium in Small Samples of Various Biological Media *C. H . Grogan, H. J . Cahnmann, and Elizabeth Lethco
983
Determination of Organic Sulfur in Nonvolatile Materials by Rapid Open-Tube Oxidation E. W . McChesney and W. F. Banks, Jr.
987
Distillation Micromethods for Analysis of Petroleum A . R. Javes, Christian Liddell. and W . H. Thomas
991
Quantitative Determination of Certain Sulfenyl Haiides Norman Kharasch and Μ . Μ . Wald
996
Volumetric Determination of Fluorine Involving Distillation from Sulfuric Acid Solution O . D. Smith and T. D. Parks
998
Spectrophotometry Technique for Calcium Leonard Aconsky and Motoko Mori
1001
Determination of Thorium by Fluorescent X-Ray Spectrometry Isidore Adler and J . M . Axelrod
1002
Determination of Organic Nitrogen by Kjeldahl Method without Distillation C. t. Adams and G . H . Spaulding
1003
Application of Zero Grid Current Vacuum Tube Voltmeter to Measurement of pH with Glass Electrode 1004 Samuel Natelson Rapid Determination of Perch I orates N . L. Crump and N . C. Johnson
1007
Rapid Polarographic Determination of Tetraethyllead in Gasoline Walter Hubis and R. O . Clark
1009
Quantitative Spectrographic Analysis of Rare Earth Elements V . A . Fasse!, Beverly Quinney, L. C. Krotz , and C. F. Lentz
1010
Method for Direct Col or i metric Determination of Oxalic Acid Julio Bergerman and J. S. Elliot
1014
Microscopic Identification of Microgram Quantities of D-Fructose L M . W h i t e and G . E. Secor
1016
Continuous Determination of Oxygen in Gases J. T. Corcoran
1018
Colorimetric Determination of N-Phcnyl-1-naphthylamine in New and Used Oils W. S. Levine and W . A . Marshall
1019
Polarographic Determination of Lead in Beryllium R. W . Bane
1022
Determination of Acetylenic Hydrogen by Means of Concentrated Silver Solutions Lucien Barnes, Jr., and L. J . Molintni
1025
Infrared Characterization of Side-Chain Substitution of Monoalkyl Benzenes W. J . Potts, Jr.
1027
Anomalous Behavior of Certain Tetraalkylbibenzyls in Zeisel Methoxy Determination R. L. Huang and Lee Kum-Tatt
1030
Performance of Interference Filters in Simple Flame Photometer W . G . Schrenk and B. L. Gendening
1031
Corrections W A C O S W I N G ARM AS SEMBLY. Permits swinging stirrer aside for SPEEDY re moval of beaker. With porcelain base support.
CRYSTALLOGRAPHY
986,1024 DATA
Triphenylacetic Acid O . W . Adams and W . C. McCrone
1033
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Each $ 1 5 . 5 0
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Air Pollution Symposium
1034
Society for Analytical Chemistry
1035
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GUARANTEED ORDER T O D A Y
New Ceramic Buckboard and Muller Harold Bloom and P. R. Barnett
1037
Write for
Graphite-and Aluminum-Block Solution Evaporators C. D. Susano
1038
complete IMagnetic Stirrer Bulletin A C - 6
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WILKENS-ANDERSON CO. 4525 W . Division St.
Chicago 5 1 , III
Circle No. 4 A an Readers' Service Card, page 39 A
4A
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ANALYTICAL
CHEMISTRY
