contributed articles - American Chemical Society

of Solution. A. T. Hubbard and F. C. Anson......723. Differential Electrolytic Potentiometry Determination of. Nanogram Quantities of Halides at Extre...
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C O N T R I B U T E D ARTICLES Scientific Communications

Use of a Mass Spectrometer as a Detector and Analyzer for Effluent Emerging from High Tempera­ ture Gas Liquid Chromatography Columns. Ragnar Ryhage 759

Separation a n d Analysis of Methylated Phenols as Their Trifluoroacetate Ester Derivatives. A. T . SHULGIN

920

Effect of Pressure Gradient on Chromatographic Column Efficiency. J. C. STERNBERG

Reactions of Ethers with Acetyl Chloride and the Iden­ tification of Products by Gas Chromatography. 921

T i m e Dependence of A. C. Polarographic Currents. H . L. H U N G AND D . E. SMITH

922

Effect of M e t a l Ions on Nuclear Hyperfine Coupling Constants in E P R Spectra. TOYOKICHI KITAGAWA, THOMAS L A Y L O F F AND R. N . ADAMS

Characterization and Routine Determination of Nonbasic Nitrogen Types in Cracked Gas Oils by Linear Elution Adsorption Chromatography. L. R. Snyder

Routine Determination of Aromatic Hydrocarbon Types in Catalytically Cracked Gas Oils by Linear A d ­ sorption Chromatography. L.R.Snyder 774

926

Spectrophotometry

O H Stretching Vibration of Pyromellitic Dianh y d r i d e - H y d r o x y n a p h t h a l e n e Complexes. H . H . .

.

.'

767

925

Amides.

RICHTOL

764

and Β. Ε. Buell

Dissolution of Calcium Tungstate with an A c i d Hydrogen Peroxide Mixture. R . H . C U R R Y AND J. R. C A R T E R

Paul Waszeciak and H. G. Nadeau

927

Titration of Primary

Aliphatic

W. R. Post and C. A. Reynolds

781

Spectrometer Cells for Single and Multiple Internal Reflection Studies in Ultraviolet, Visible, Near In­ f r a r e d , and Infrared Spectral Regions. W. N. Hansen and J. A. Norton

Theory of Stationary Electrode Polarography. Single Scan and Cyclic Methods Applied to Reversible, Irreversible, and Kinetic Systems. R. S. Nicholson and Irving Shain

Emission Spectrometry Determination of Beryllium in Oilfield Waters Using Plasma Arc. A. G. Collins 706

New Electrodes for Chronopotentiometry in Thin Layers of Solution.

A. T. Hubbard and F. C. Anson

783

723

and C. A . Pearson

787

Determination of Calcium, Magnesium, Copper, and Zinc in Red Blood Cells by Emission Spectrometry. L. S. Valberg, J. M. Holt, and John Szivek

Differential Electrolytic Potentiometry Determination of Nanogram Quantities of Halides at Extreme Dilution by Constant Current Coulometry. Edmund Bishop and R. G. Dhaneshwar

726

Absolute Differential Electrolytic Potentiometry as Index of Poising Capacity. Edmund Bishop and G. D. Short 730

790

Spectrophotometric Determination of Traces of Per­ oxides in Organic Solvents. D. K. Banerjee and C. C. Budke 792 Simultaneous Spectrophotometric Determination of Calcium and Magnesium with Chlorophosphonazo III.

J. W. Ferguson, J. J. Richard, J. W. O'Laughlin, and C. V.

Banks Potentiometric Titration of Free Acid and Uranium in Uranium(VI) Solutions with Alkali. Kenji Motojima and Kimie Izawa

733

796

Spectrophotometric Determination of Total Nitrogen Dioxide and Nitrogen Tetroxide in Air. s. W. Comer and A. V. Jensen

An Automatic Potentiometric Method f o r the Determin­ ation of the Absolute Activity of Glucose Oxidase. H. L. Pardue, R. K. Simon, and H. V. Malmstadt

735

Electrode.

J. S. Fritz and Β. Β. Garralda

737

Role of Column Pressure Drop in Gas Chromatographic Resolution.

J. C. Giddings

741

Equilibrium Considerations at Finite Solute Concentra­ tions in Gas Liquid Chromatography. R. s. Henly, Arthur Rose, and R. F. Sweeny

744

Theoretical Prediction o f the Stationary Phase Con­ tribution to the Plate Height in Chromatography. S. M. Gordon, G. J. Krige, and Victor Pretorius

750

J. V. Mortimer and P. L. Gent . . . .

P. E. Dunagin, Jr., and J. A. Olson

. . . .

800

Systematic Neutron Activation Technique for the Determination of Trace Metals in Petroleum. U. P. Colombo, Giuseppe Sironi, G. B. Fasolo, and Renzo Malvano .

802

Direct Nondestructive Method for the Determination of Californium-252. Application of Prompt Gamma Rays from Spontaneous Fission. F. L. Moore and J. S. Eldridge 808 Combined Radiochemical—Neutron Activation Analysis Method for the Determination of Sulfur and Phosphorus in High Purity Paper and Beer. A. G. 811

754

Simultaneous Determination of Mercury and Arsenic in Biological a n d Organic Materials b y Activation

Gas Liquid Chromatography o f Retinol (Vitamin A) Derivatives.

Yoshio Hirano and Teiichi Tamura

Souliotis

The Use of Organo-Clays as Gas Chromatographic S t a t i o n a r y Phases.

Spectrophotometric Microdetermination of Lebaycid, 0 ; 0-Dimethyl-0-(4-methylthio)-M-tolyl)phosphorothioate.

Potentiometric Titration o f Metal Ions Using a Silver

799

756

Analysis.

Bernt Sjostrand

814 VOL. 36, NO. 4, APRIL 1964



3 A

CONTRIBUTED ARTICLES Determination of Metallic Platinum in Alumina Catalysts by X-Ray Diffraction.

Determination of Molybdenum and Sulfur in Solid Lub­ ricants. I. L. Kalnin

PlatinumR. A. Van

Nordslrand, A . J . Lincoln, a n d A . Carnevale

Emission Spectrographic Determination of Lead in Powder Samples with Spark Excitation. D. c. Hargis and G. W. Smith Intensity Ratio Technique for X-Ray Spectrometric Analysis of Binary Samples. Particular Application to Determination of Niobium and Tin on Nb 3 SnCoated Metal Ribbon. E. p. Berlin

Automatic Osmometer for Determination of Number Average Molecular Weights of Polymers. F. B. Rolfson and Hans Coll

Determination of Hexahydro-l,3,5-trinitro-S-triazine in Admixture with Octahydro-l,3,5,7-tetranitro-Stetrazine by Nonaqueous Titration in Mixtures, s. K. Sinha, R. M . Kulkarni, a n d K. R. K. Rao

894

826

Direct Determination o f Inhibitors in Polymers b y Lumi­ nescence Techniques. H. V. Drushel and A. L. Sommers . 8 3 6 Determination of Higher Alkoxyl Groups b y Direct Chemical Reaction a n d Nonaqueous Titration. Sarah Ehrlich-Rogozinski and Abraham Patchornik . . . . .

888

824

X - R a y Fluorescence Determination o f C o b a l t , Zinc, a n d Iron in O r g a n i c Matrices. S. A. Bartkiewicz and E. A. Hammatl 833

840

Corrections for Background in Spectrophotometry Using Difference-in-Absorbance Values. Application to Vitamin A. j . B. Wilkie

896

Anion Exchange Separation of Calcium and Strontium. J. S. Fritz, Hirohiko Waki, and Β. Β. Garralda

900

Monitoring Countercurrent Distribution with a Record­ ing Refractometer. R. O. Butterfleld and H. J. Dutton . .

903

Principles of Absolute Interferometry and Densimetry. v. τ. Piiion

907

Absolute

Chemical Shifts of M e t h y l Protons in Polymethylnaphthalenes. F. F. Yew, R. J. Kurland, and B. J. Mair . . . . 8 4 3

A Spectrophotometric McNutl

Titrimetric Determination o f Zinc with mono-1,1 O-phenanthroline—Ferrate(ll). and A. V. Nowak

A Study of Base-Catalyzed and Salt-Catalyzed Acetylation of Hydroxyl Groups. G. H. Schenk, Patricia

TetracyanoA. A. Schil» 845

Test for Xanthopterin.

W. S. 912

Wines, and Carolyn Mo|zis

Potentiometric Determination D. H. McColl and T. A. O'Donnell

of

9 Ί 4

Orthophosphate. 848

S e p a r a t i o n o f Uranium, Thorium, a n d the Rare Earth Elements b y Anion Exchange. Johann Korkisch and Guslaf Arrhenius 850 Determination of Butyllithium in Hydrocarbons by Thermometric Titration with Butanol. W. L. Everson .

854

Conductometric Determination of Carbon Using Car­ bonate-Saturated Barium Hydroxide Absorbent. E. J . Violante

Corrections

789, 8 7 1 , 895

Correspondence Absorptivities for Infrared Determination Peroxyacyl Nitrates. E.R.Stephens

of 928

Use of Glass Reference Electrode in Potentio­ metric Titration of Halides with Silver Nitrate in LiNOs-KNOs Eutectic Melt. H.T.Tien

929

Determination of Trimethylolpropane in Polyesters and Polyurethane Foams. R. E. Wittendorfer . . . .

930

856

Some Hydrocarbons of the Gas Phase of Cigarette Smoke.

R. J. Philippe, Henry Moore, R. G . Honeycutt, and J .

M.Ruth

859

Spectrophotometry Determination of Ammonia as Rubazoic Acid with Bispyrazolone Reagent. Lidmila Prochazkova

A Fire Assay for Osmium in Sulfide Concentrates,

931

8Z2

Application of Potentiostatic Current Integration to the Study of the Adsorption of Cobalt(lll)(Ethylenedinitrilo(tetraacetate) on Mercury Elec­ trodes. F. C. Anson

875

Determination of Aldehydes in the Presence of Acids, Acetals, and Ketones, Using a Silver Oxide-ferf-Butylamine Complex. J. A. Mayes,

j . C.

Identification of the Pyrolyzates of Substituted Bar­ bituric Acids by Gas Chromatography. D. F. Nelson and P. L. Kirk

Some Zone-Refining Calculations on Phenanthrene-Anthracene System. E. T. Nelson, M. S. Brooks, a n d A . F. A r m i n g t o n

865

V a n Loon a n d F. E. Beamish

E. J . Kuchar, and Sidney Siggia

Correlation between Apparent pH and Acid or Base Concentration in the ASTM Medium. Orest Popovych .

878

Estimation of Pyridine Nucleotides in a Crude Tissue Extract by Color Reaction of Nucleotide Ribose with Orcinol and Ferric Chloride. Anima Devi and Uma Srivasfava

Jungreis, and Vardina Lipetz



ANALYTICAL CHEMISTRY

Determination of Microgram Amounts propyl Alcohol in Aqueous Solutions.

Precise 882

885

Microdetermination

932

934

of IsoMarianna

Mantel and Michael Anbar

Specific Spot Detection of Chlorine in Inorganic and Nonvolatile Organic Compounds. Fritz Feigl, Erwin

4 A

886

819

936

of

Cobalt.

R. s.

Ondrejcin

Determination of Phenylacetic Acid in Penicillin Fermentation Media by Means of Gas Chro­ matography. A. O. Niedermayer

937

938

CONTRIBUTED

31

No.

in the

ADVANCES IN CHEMISTRY SERIES

CRITICAL SOLUTION TEMPERATURES

ARTICLES

Spectrophotometry Microdetermination of Nitrate with Chromotropic Acid Reagent. J. J. Batten . . .

939

Polarographic Determination o f o-Phenylenedia m i n e in the Presence o f O t h e r Isomeric Pheylenediamines. H. B. Mark, Jr

940

P a p e r C h r o m a t o g r a p h y o f the 2 , 4 - D i n i t r o p h e n y l hydrazones of Alk-1-en-3-ones. D. A. Forss and William Stark

941

Instrumental Reduction o f B a c k g r o u n d S i g n a l o f Fuel-Rich O x y a c e t y l e n e Flames Used in A t o m i c Absorption Spectrometry. J. D. Winefordner and Claude Veillon

943

S p e c t r o p h o t o m e t r y D e t e r m i n a t i o n o f V a n a d i u m in E t h y l e n e - P r o p y l e n e R u b b e r Solutions w i t h 2 , 3 ' Diaminobenzidine. A. J. Smith

944

The D e a d - S t o p T i t r a t i o n o f Thallium. and Herschel Frye

945

R. B. William»

by Alfred W. Francis, consultant to Socony Mobil Oil Co.

This volume, written by an authority on hydrocarbon chemistry and liquid-liquid phase relations, lists over 6000 critical solution temperatures (the minimum temperature for mixing of two substances in all proportions as liquids). Also included are about 800 aniline point observations; methods for determining CST; guides to using CST data and to estimating the CST for untested systems. Among uses of CST are: screening possible extraction solvents for selectivity; approximating liquid solubility at any temperature below the CST; characterizing hydrocarbons; analysis of mixtures, especially where water is one component, and providing an insight into molecular structure. CONTENTS Introduction and six Figures.. .Tables: Critical Solution Temperatures . . . Aniline and Furfural Points . . . Lower Critical Solution Temperatures . . . Mutual Miscibility of Liquids (tabulations of numerical CST data from charts in five published compilations).. .Bibliography. 246 pages.

Cloth bound.

Price: $5.00

Order from: Special Issues Sales, American Chemical Society 1155 Sixteenth Street, N. W., Washington 6, D. C.

6 A



ANALYTICAL CHEMISTRY

H i g h e r Recoveries o f C a r b o n y l C o m p o u n d s in Flash Exchange G a s C h r o m a t o g r a p h y of 2,4-Dinitrophenylhydrazones. j . w . Rails

946

T h e o r y o f Diffusion Limited C h a r g e - T r a n s f e r Processes in E l e c t r o a n a l y t i c a l Techniques. A p p l i c a t i o n t o S t a t i o n a r y E l e c t r o d e , Linear V o l t a g e Scan Voltammetry. R. P. Buck

947

A N e w Technique f o r the P r e p a r a t i o n o f C o a t e d G l a s s - B e a d Column f o r G a s C h r o m a t o g r a p h y . Ihor Lysyj and P. R. Newton

949

Factors A f f e c t i n g the D e t e r m i n a t i o n o f H y d r o x y p r o l i n e . Jeannette Blomfleld and J. F. Farrar

950

A i d s for the A n a l y s t I m p r o v e d C a l o m e l Reference Electrode f o r N o n a q u e o u s T i t r a t i o n o f H a l o g e n A c i d Salts o f O r g a n i c Bases. J. R. Deily and Leon Dann

952

D e t e r m i n a t i o n o f A r g o n in the Presence o f O x y g e n a n d O t h e r Atmospheric Gases b y Adsorption Chromatography. Kenneth Abel

953

A n i m p r o v e d G a s - T i g h t M i c r o Cross-Section I o n i z a t i o n Detector. Kenneth Abel

954

Densitometer f o r Q u a n t i t a t i o n o f the S t a i n e d Prot e i n Fractions S e p a r a t e d E l e c t r o p h o r e t i c a l l y o n A c r y l a m i d e G e l S l a b . T. G. Ferris, R. E. Easterling, and R. E. Budd

955

D e t e r m i n a t i o n o f N i t r o g e n in Inorganic N i t r a t e s b y t h e Dumas M e t h o d . D. F. Ketchum

957

A C o n v e n i e n t Cell Design f o r Studies E m p l o y i n g S h i e l d e d S o l i d Electrodes. H. B. Mark, Jr

958

A u t o m a t i c M a s s Scanner f o r a T i m e - o f - F l i g h t M a s s Spectrometer. M. V. McDowell, R. S. Olfky, and F. E. Saolfeld

959

I m p r o v e d Technique f o r the D e t e r m i n a t i o n o f C 1 4 a n d H 3 b y C o m b u s t i o n . H. P. Baden

900