CONTRIBUTED ARTICLES Selectivity of Various Liquid Substrates Used in Gas Chromatography H. M. Tenney
2
Determining Sulfur Compounds in Petroleum Naphtha. The Humble Scheme J. H. Karchmer
Gas Chromatography of Olefins. Determination of Pentenes and Hexenes in Gasoline . . . H. S. Knight
9
Determining Disulfides in Petroleum Naphtha. fication of Acetic Acid-Zinc Reflux Method
Gas Chromatography. Effect of Type and Amount of Solvent on Analysis of Saturated Hydrocarbons .
15
20
F. T. Eggertsen a n d Sigurd Groennings
Exploratory Studies of High Temperature Gas-Liquid Chromatography
25
Quantitative Determination of Organic Disulfides . .
91
. G . W . Powers, Jr., and F. J. Piehl
Two-Stage Gas-Liquid Chromatography
28
32
Determination of Oil in Refinery Effluent W a t e r s . . .
36
Fluorometric Determination of 1 - and 2-Naphthol in
J. H. Karchmer, S. S. Kurtz, Jr., A . R. Rescorla, F. M . Roberts, A . J. Stephenson, W. J. Troeller, Jr., and Ε. Β. Tucker
96
100
H. M . Eby and R. A . Klett
Simplified Control Analyses of Partial Acetylation of Cotton
Solutions Used in 104
E. M . Buras, Jr., A . S. Cooper, and M . D. Cruz
107
M . H. Swann and G. G . Esposito
41
H. F. Mueller, T. E. Larson, and W. J. Lennarz
Spectrophotometric Determination of Iron with Ethylenediamine Di(o-Hydroxyphenylacetic Acid) .
D. M . Hercules and L. B. Rogers
Detection of Urea, Melamine, Isocyanate, and Urethan Resins. .Rapid Group Test for Nitrogen, Sili con, Phosphorus, and Titanium in Coating Materials
J. B. Rather, Jr., J . A . Grant, V . H. Gunther, C. E. Headington,
Chromatographic Identification and Determination of Organic Acids in W a t e r
93
Conversion of Refractive Dispersions
M . C. Simmons and L. R. Snyder
Detection of Pyrene, Benzo[a]Pyrene, and Polynuclear Hydrocarbons
Other 109
Eugene Sawicki and R. R. Miller
44
A . L. Underwood
Carrier Precipitation of Trace Elements. tope Evaluation of Efficiency
Fluorometric and Colorimetric Estimation of Cyanide and Sulfide by Demasking Reactions of Palladium Chelates
Mixtures
Rapid Chromatographic Analysis of Soap-Thickened
Determination of Small Amounts of Pyrophosphate in Soluble Orthophosphates
Ill
W. B. Chess and D. N . Bernhart
Radioiso 47
E. E. Pickett a n d B. E. Hankins
Analysis of High-Purity Iron
112
R. E. Heffelfinger, D. L. Chase, G . W . P. RengsforfF, a n d W . M . Henry
Rapid Spectrophotometric Determination of Submilligram Quantities of Uranium . . . . C.A.Francois
50
Determination of Oxyalkylene Groups. . .In Glycols and Glycol and Polyglycol Ethers and Esters. . .
54
Inexpensive Automatic Recording Thermobalance . .
56
W. W. Wendlandt
Infrared Analysis of Emulsion Polishes
58
Thermolysis of Oxine Molybdophosphate
61
Electrophoresis
W . W. Wendlandt and J. A . Brabson
R.J. Colarusso, Morton Schmall, E. G. Wollish, and E. G. E. Shafer
Coulometric Titrations with Mercury(l and II). mination of Cyanide
Deter 65
E. P. Przybylowicz and L. B. Rogers
Resolution of Acid Mixtures in Nonaqueous Solvents. Potentiometric Titration of Dibasic Acids with Quaternary Ammonium Titrants
Traces
1 32
Automatic Titration of Micro Amounts of Chloride by Convection Amperometry A. L. Juliard
1 36
MicrodifFusion of Q through C5 Organic Acids . . .
1 40
Ultramicromethod for Molecular W e i g h t Determina tion G. O. Guerrant Multipurpose Standard for Microchemical Analysis .
73
Semimicro-Kjeldahl Procedure for Pyridinium Halide . V . B. Fish a n d P. R. Collier
151
74
Determination of Phosphorus in Organic Compounds. . Rapid Micro and Semimicromethod
152
1 43 149
W . H. Smith
In
of
.
.
K. D. Fleischer, B. C. Southworth, J. H. Hodecker, a n d M . M .
L. J. Cali, J. W . Loveland, and D. G. Partikian
Amides in Acetic D. C. Wimer
by
G . I. Robertson, L. M . Jett, and Louis Dorfman
a n d O x y h a l i d e Salts
of
1 29
R. A . Troupe a n d J. J. Golner
69
G . A . Harlow a n d G . E. A . Wyld
Combustion-Amperometric Titration Halogen in Petroleum Products
1 26
Process Control Methods in Chlorination of Benzene .
L. M . Marshall and F. T. Fox
Wyld
Potentiometric Titration of Very W e a k Acids. fluence of Titrant Solvent
Density-Gradient
R. L. Berg a n d R. G . Beeler
Microdetermination of Carbon and Hydrogen Rapid Combustion Procedure 62
116
J . E. Murphy and W. C. Schwemer
Improved Method for Performing
Thermal Decomposition of Scandium, Yttrium, and Rare Earth Metal Oxalates . . . . W. W. Wendlandt
Photometric Determination of Iproniazid and Related Compounds
115
Sidney Siggia, A . C. Starke, J. J. Garis, Jr., and C. R. Stahl
Spectrophotometric Determination of Nitrite and Thio urea Kenneth Hutchinson and D. F. Boltz
Determination of
85
J. S. Hanker, A l a n Gelberg, and Benjamin Witten
J. L. Ogilvie, M . C. Simmons, and G . P. Hinds, Jr.
Potentiometric Anhydride
. . .
R. L. Hubbard, W . E. Haines, a n d J. S. Ball
Determination of Five- to Seven-Carbon Saturates by Gas Chromatography
G . A . Harlow a n d G. E. t.
Modi-
J . H. Karchmer a n d M . T. Walker
F. T. Eggertsen and H. S. Knight
Lubricating G r e a s e s .
80
Tuckerman
77
Corrections
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