ANALYTICAL CHEMISTRY Volume 22, No. 4
Issued April 17, 1950
Copyright 1950 by American Chemical Society
EDITOR: WALTER J. MURPHY E x e c u t i v e Editor:
Assistant to Editor:
N . A . PARKINSON
Assistant M a n u s c r i p t Editing:
Contributing Editor: R. H . MÜLLER Editorial
Editors G . GLADYS G O R D O N
Manuscript Reviewing:
Advisory Board
Associate Editor: LAWRENCE T. HALLETT
JAMES M . CROWE
STELLA ANDERSON
M a k e - u p : C H A R L O T T E C . SAYRE
DOROTHY M. ADAMS
KATHERINE I. BIGGS
Assistants
W . A. KlRKLIN
RUTH CORNETTE EILEEN F. GILLESPIE
BETTY V . KIEFFER
EDITORIAL
R. H. MULLER B. L. OSER C. J. RODDEN J. W. STILLMAN W. J. SWEENEY EDWARD WICHERS
Κ. Κ. CHEN P. J. ELVING I. M. KOLTHOFF H. A. LAITINEN M. G. MELLON
513
Improved Equipment for Engler-Type Distillations H. B. H. Cooper and E. C. Medcalf
587 590
Derivatives of Fatty Acids . F. W. Matthews, G. G. Warren, and J. H. Michell
514
Preparation of Iridosmine for Analysis by Dry Chlorination M . A . Hill and F. E. Beamish
X-Ray Identification of Alkyl Halides as Alkyl 6-Nitrobenzothiazolyl-2suIfides and Sulfones L. L. Merritt, Jr., H. B. Cutter, H. R. Golden, and Elma Lanterman
519
MICROCHEMISTRY
Poiarography of Chloroform and Carbon Tetrachloride I. M . Kolthoff, T. S. Lee, Danica Stocesova, and E. P. Parry
521
Poiarography of Mixtures
Reduced
Glutathione and^Glutalhione-Ascorbic Acid D. M . Coulson, W. R. Crowell, and S. L Friess
Measurement of Radiocarbon as Carbon Dioxide inside Geiger-Miiller Counters M . L. Eidinoff Electrometrtc Titration of Alcohols Using Lithium Aluminum Hydride . . . C. J. Lintner, R. H. Schleif, and Takeru Higuchi
Methadone Hydrochloride
525
534
538
Analysis of Lactic Acid-Lactate Ester Systems . R. A . Troupe and Κ. Α . Kobe
545
Determination of Sulfur Trioxide in Chlorosulfonic Acid
603
Kjeldahl Ultramicrodetermination of Nitrogen J. A . Kuck, Alma Kingsley, Doris Kinsey, Frances Sheehan, and G. F. Swigert
604
NOTES O N A N A L Y T I C A L PROCEDURES Distillation-Diffusion Unit
P. L. Kirk
549 553
Determination of Sulfur by Elementary Isotopic Analysis
W. S. Hanna and A . 8. Johnson
555
A . D. Kirshenbaum and A . V . Grosse Cell for Routine Polarographic Analyses
558
M . S. Pepi
560
Procedures in High Precision Ebulliometry . F. Ν . Hill and Alexander Brown
562
Colorimetric Codetermination of Cobalt and Nickel M . H. Perry and E. J. Serfass Colorimetric Determination of Boron Using Carmine
565
J. T. Hatcher and L. V . Wilcox
567
Determination of Chloroform and Bromoform . J. G. Hanna and Sidney Siggia
569
Determination of Phenol Preservative in Sera, Vaccines, and Protein Solutions P. E. Portner Quantitative Determination of Aromatic Nitro Groups with Tin C. E. Vanderzee and W. F. Edgell Separation and Determination of Sodium Oxide in Presence of Lithium Oxide, Phosphorus Pentoxide, and Potassium Oxide . . . . H. R. Shell Titration of Bases in Dioxane .J.S.Fritz
575 578
Separation and Analysis of Polynuclear Compounds by Countercurrent Dis tribution Calvin Gohimbic
579
Sodium
600
F.E.Clarke
Rapid Routine Calculation of Multicomponent Mixtures with Punched Card Machines AscherOpler Rapid Photometric Determination of Iron in High Temperature Alloys . . .
of
A . O . Gettler, C. J. Umberger, and Leo Goldbaum Ultramicrodetermination of Nitrogen . . W. L. Doyle and J. H. Omoto
Chloroform Solutions of Dithiocyanatodipyridine Copper (II) Therald Moeller and R. E. Zogg
William Seaman, J. T. Woods, and Η. Ν . Bank
Determination Separation
599
529
R. J. Curtis, J. R. Scheibli, and T. F. Bradley
Water Content of Hydrocarbons
595
Fractional Sublimation on Removable Transparent Film
Evaporation of Solvents and Thinners
Determination of Chloride in Water
C. E. Hubach and F. T. Jones
Colorimetric Microdetermination of Rhodium with 2-Mercaptobenzoxazole D. E. Ryan
570 572
Oscar Gawron
Colorimetric Method for Determining Surface-Active Agent . G. R. Wallin Kelly Tube for Sedimentation Analysis S. C. Sane, M . K. Shirpurkar, V . V . Deshpande, and M . S. Telang Adjustable Constant Flow Regulators for Corrosive Gases E. J. Serfass, D. A . Shermer, and R. G. Steinhardt, Jr.
612 613 614 616 617 618
Training in Industrial Hygiene and Human Relations .
615
Optical Society of America
623
Officers of Division of Analytical Chemistry
625
C R Y S T A L L O G R A P H Y D A T A . . . D. G. Grabar and W . C. McCrone
620
CORRESPONDENCE
622
BOOK REVIEWS
622
THE ANALYST'S C A L E N D A R
625
AIDS FOR THE A N A L Y S T
626
THE ANALYST'S C O L U M N INSTRUMENTATION
21 A R. H. Muller 25 A
and Potassium, Employing Ion-Exchange John Beukenkamp and William Rieman III
582
NEW PRODUCTS FOR ANALYSTS
31 A
lodometric Determination of Resorcinol . . H. H. Willard and A . L. Wooten
585
INDUSTRIAL LITERATURE
35 A
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