Deriving Meaningful Datasets from User-Contributed Geospatial Content
CONTRIBUTED ARTICLES
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CONTRIBUTED ARTICLES Scientific Communications Influence of Injection Time on the Efficiency of Gas Chromatography Columns. GEORGES GUIOCHON . . 399 Chronopotentiometry at Rotating Disk Electrodes. R. P. BUCK AND Η.Έ. KELLER 400 Excitation Processes in Flame Spectrometry. J. H. Gibson, W. E. L. Grossman, and W. D. Cooke 266 Study of Multicomponent Mixtures in Solution with a Vertical-Axis Transmission-Type Filter-Fluorometer. M. H. Fletcher 278 A Vertical-Axis Transmission-Type Filter-Fluorometer for Solutions M.H.Fletcher 288 Solvent Extraction Method for Zirconium-97. Use for Evaluating Critical Nuclear Incidents, w. J. Maeck, S. F. Marsh, and J. E. Rein 292 Solvent Extraction of Certain Transition Metal Ions with 1-(2-Pyridylazo)-2-naphthol. A Study of Complex Formation and Distribution Equilibria. D. Betteridge, Quintus Fernando, and Henry Freiser .... 294 Spectrophotometry Determination of Technetium with 1,5-Diphenylcarbohydrazide. F. J. Miller and H. E. Zittel 299 Utilization of Tricaprylmethylammonium Thiocyanate as a Selective Extraction Agent in the Spectropho- tometric Determination of Cobalt. A. M. Wilson and Ο. Κ. McFarland 302 Conductometric Titrations in the Sulfuric Acid Solvent System. D. E. Leyden, D. L. Smith, and A. L. Underwood . . 307 Use of a Lead Reductor in the Potentiometric Deter- mination of Uranium and Iron. W. R. Amos and W. B. Brown 309 A New Spectrophotometric Reaction of Beryllium. A. M. Cabrera and T. S. West 311 Characterization of Granular Solids by Quantitative Attrition. D. E. Kratnm and I. C. Stone 313 Rapid Combustion Method for the Determination of Organic Substances in Aqueous Solutions. C. E. Van Hall, John Safranko, and V. A. Stenger 315 Quantitative Determination of Phenol in Cigarette Smoke. A. W. Spears 320 Oxygen-18 Determination by Counting Delayed Neutrons of Nitrogen-17. Saadia Amiel and Max Peisach 323 Nonspecificity of Hypochlorite-Phenol Estimation of Ammonium in Biological Material. J. T. Wearne . . . 327 Chromium(VI)— 1,5-Diphenylcarbohydrazide Reaction and the Effect of Gamma Radiation on it. H. E. Zittel 329 Determination of Trace Metals in Oils by Sulfur In- cineration and Spectrophotometric Measurements. E. J. Agazzi, D. C. Burtner, D. J. Crittenden, and D. R. Patterson 332 Determination of Carbon—Hydrogen Ratios by Neutron Scattering. H. L. Finston and Emanuel Yellin 336 Correction for the Inconstancy of the Chronopotentio- metric Constant at Short Transition Times. A. J. Bard . 340 Thin Layer Chromatography of the Mixed Neomycin Sulfates on Carbon Plates. T. F. Brodasky 343 Quantitative Thin Layer Chromatography. Technique and Application to Assay of a Steroid: 6-Chloro-l 7 a-Hydroxypregna-4,6-diene-3,20-dione Acetate. H. L. Bird, Jr., H. F. Brickley, J. P. Comer, P. E. Hartsaw, and M. L. Johnson 346 Paper Chromatographic Identification of Carbonyl Compounds as Their 2,4-Dinitrophenylhydrazones in Automobile Exhaust. E. D. Barber and J. P. Lodge, Jr. . . 348 Thin Layer Chromatography of Some Methylated Glycosides. Mildred Gee 350 Plate Height of Nonuniform Chromatographic Columns. Gas Compression Effects, Coupled Columns, and Analogous Systems. J. C. Giddings 353 Rapid Gas Chromatographic Method for Screening of Toxicological Extracts for Alkaloids, Barbiturates, Sympathomimetic Amines, and Tranquilizers. K. D. Parker, C. R. Fontan, and P. L. Kirk 356 Flame Response in the Quantitative Determination of High Molecular Weight Paraffins and Alcohols by Gas Chromatography. Gerald Perkins, Jr., R. E. Laramy, and L. D. Lively 360 Use of Differential Reaction Rates to Analyze Mixtures of Organic Materials Containing Same Functional Group. Application to Mixtures of Unsaturated Compounds. Sidney Siggia, J. G. Hanna, and Ν. Μ. Serencha 362 VOL. 35, NO. 3, MARCH 1963 · 3 A
Transcript of CONTRIBUTED ARTICLES
CONTRIBUTED ARTICLES
Scientific Communications
Influence of Injection Time on the Efficiency of Gas Chromatography Columns. GEORGES GUIOCHON . . 399
Chronopotentiometry at Rotat ing Disk Electrodes. R. P. BUCK AND Η . Έ . K E L L E R 400
Excitation Processes in Flame Spectrometry. J. H. Gibson, W. E. L. Grossman, and W. D. Cooke 2 6 6
Study of Multicomponent Mixtures in Solution with a Vertical-Axis Transmission-Type Filter-Fluorometer. M. H. Fletcher 2 7 8
A Vertical-Axis Transmission-Type Filter-Fluorometer for Solutions M.H.Fletcher 2 8 8
Solvent Extraction Method for Zirconium-97. Use for Evaluating Critical Nuclear Incidents, w. J. Maeck, S. F. Marsh, and J. E. Rein 2 9 2
Solvent Extraction of Certain Transition Metal Ions with 1-(2-Pyridylazo)-2-naphthol. A Study of Complex Formation and Distribution Equilibria. D. Betteridge, Quintus Fernando, and Henry Freiser . . . . 294
Spectrophotometry Determination of Technetium with 1,5-Diphenylcarbohydrazide. F. J. Miller and H. E. Zittel 299
Utilization of Tricaprylmethylammonium Thiocyanate as a Selective Extraction Agent in the Spectropho-tometric Determination of Cobalt. A. M. Wilson and Ο. Κ. McFarland 3 0 2
Conductometric Titrations in the Sulfuric Acid Solvent System. D. E. Leyden, D. L. Smith, and A. L. Underwood . . 3 0 7
Use of a Lead Reductor in the Potentiometric Determination of Uranium and Iron. W. R. Amos and W. B. Brown 3 0 9
A New Spectrophotometric Reaction of Beryllium. A. M. Cabrera and T. S. West 3 1 1
Characterization of Granular Solids by Quantitative Attrition. D. E. Kratnm and I. C. Stone 3 1 3
Rapid Combustion Method for the Determination of Organic Substances in Aqueous Solutions. C. E. Van Hall, John Safranko, and V. A. Stenger 3 1 5
Quantitative Determination of Phenol in Cigarette Smoke. A. W. Spears 3 2 0
Oxygen-18 Determination by Counting Delayed Neutrons of Nitrogen-17. Saadia Amiel and Max Peisach 3 2 3
Nonspecificity of Hypochlorite-Phenol Estimation of Ammonium in Biological Material . J. T. Wearne . . . 327
Chromium(VI)— 1,5-Diphenylcarbohydrazide Reaction and the Effect of Gamma Radiation on it. H. E. Zittel 329
Determination of Trace Metals in Oils by Sulfur Incineration and Spectrophotometric Measurements. E. J. Agazzi, D. C. Burtner, D. J. Crittenden, and D. R. Patterson 332
Determination of Carbon—Hydrogen Ratios by Neutron Scattering. H. L. Finston and Emanuel Yellin 3 3 6
Correction for the Inconstancy of the Chronopotentio-metric Constant at Short Transition Times. A. J. Bard . 340
Thin Layer Chromatography of the Mixed Neomycin Sulfates on Carbon Plates. T. F. Brodasky 343
Quantitative Thin Layer Chromatography. Technique and Application to Assay of a Steroid: 6-Chloro-l 7 a-Hydroxypregna-4,6-diene-3,20-dione Acetate. H. L. Bird, Jr., H. F. Brickley, J. P. Comer, P. E. Hartsaw, and M. L. Johnson 346
Paper Chromatographic Identification of Carbonyl Compounds as Their 2,4-Dinitrophenylhydrazones in Automobile Exhaust. E. D. Barber and J. P. Lodge, Jr. . . 3 4 8
Thin Layer Chromatography of Some Methylated Glycosides. Mildred Gee 3 5 0
Plate Height of Nonuniform Chromatographic Columns. Gas Compression Effects, Coupled Columns, and Analogous Systems. J. C. Giddings 353
Rapid Gas Chromatographic Method for Screening of Toxicological Extracts for Alkaloids, Barbiturates, Sympathomimetic Amines, and Tranquilizers. K. D. Parker, C. R. Fontan, and P. L. Kirk 3 5 6
Flame Response in the Quantitative Determination of High Molecular Weight Paraffins and Alcohols by G a s Chromatography. Gerald Perkins, Jr., R. E. Laramy, and L. D. Lively 3 6 0
Use of Differential Reaction Rates to Analyze Mixtures of Organic Materials Containing Same Functional Group. Application to Mixtures of Unsaturated Compounds. Sidney Siggia, J. G. Hanna, and Ν. Μ. Serencha 3 6 2
VOL. 35, NO. 3, MARCH 1963 · 3 A
CONTRIBUTED ARTICLES
Analysis of Mixtures Using Differential Kinetics with Separation Processes. Sidney Siggia, j . G. Hanna, and Ν. Μ . Serencha 3 6 5
X-Ray Fluorescence Method for Trace Metals in Refinery Fluid Catalytic Cracking Feedstocks. W. A. Rowe and K. P. Yates 3 6 8
Microdetermination of Long-Chain Carboxylic Acids by Transesterification with Boron Trifluoride, O. S. Duron and Alois Nowotny 3 / 0
Limited Area Flame Spectrometry. Chemilumines-cence. B. E. Bueli 372
Separation of Trace Quantities of Bromide from Large Amounts of Chloride by a Distillation Method and Measurement of the Bromide by Precision Null-Point P o t e n t i o m e t r y . J. D. Winefordner and Maung Tin . . . . 3 8 2
Hydrogénation of Linolenate. Fractionation of Isomeric Esters by Countercurrent Distribution with an Argentation System, c. R. Scholfield, E. p. Jones, R. O. Butterfield, and H. J. Dutton 3 8 6
Paper Chromatography of Several Classes of Compounds: Correlated R{ Values in a Variety of Solvent Systems. Kay Fink, R. E. Cline, and R. M. Fink . . . 389
Correction 298
Correspondence
Analysis of Binary Mixtures by Second-Order Differential Reaction Rates. Sidney Siggia and H. B. Mark 403
Zinc as Masking Agent in the Spectrophotometric Determination of (Ethylene dinitrilo) tetraacetic A c i d in U r i n e . R. E. Mosher, P. J. Bucar, and A . J. Boyle 4 0 3
Simplified Preparation of Cadmium Iodide—Linear Starch Reagent for Colorimetric lodimetry. J. L. Lambert and Fred Zitomer 4 0 5
Recoveries of Fluoride by Microdiffusion: Effect of Heat and Diffusion Time H. W. Wharton 406
A Modif ied Flotation Method of Density Determination for Small Solid Samples E.L.Simons. . . 407
Thallium-Column Dissolved Oxygen Analysis: Recommended Values of TIOH Equivalent Conductance. W. T. Lindsay, Jr 4 0 8
Determination of Water Content in Potassium D i f l u o r i d e . G. B. Barbi and Sergio Pizzini 4 0 9
Vacuum Output Gas Chromatography. P. F. Varadi and Kitty Ettre 4 1 0
An lodometric Method for the Macro- and Micro-determination of Peroxydisulfate. N. A. Frigerio . 412
The Effect of Detector Block Fouling on Observed Separations in Gas Liquid Chromatography. R. G. Ackman and R. D. Burgher 4 1 3
Modified Spectrophotometric Reaction for Detecting Organic Peroxide. P. R. Dugan and R. D. O'Neill . . 414
Infrared Identification of Microgram Quantities of Heroin Hydrochloride. A.L.Mills 416
Evaluation of Reaction Rates from Transmittance-T i m e T r a c e s . Michael Baloga and J. E. Earley . . . . 4 1 6
Modification of the Phenolphthalin Method for the Determination of Total Oxidants. D. F. Bender and A. W. Breidenbach 4 1 7
Aids for the Analyst
Improved Gas Chromatographic Column for Barbiturates. K. D. Parker, C. R. Fontan, and P. L. Kirk. . 418
Backflush Applied to Capillary Column-Flame Ionization Detector Gas Chromatography Systems. E. R. Fett 419
Use of Chlorine for Quantitative Elution of Cu(ll) from D o w e x 1 Resins. J. J. O'Connor, J. R. Weiner, and
Bernard Rubin 4 2 0
Automated Determination of Trace Carbonyls. S. A. Bartkiewicz and L. C. Kenyon, Jr 4 2 2
Apparatus for the Determination of Particle Density o f Porous So l ids . F. O. Carton and G. J. Curtis . . . . 4 2 3
4 A · ANALYTICAL CHEMISTRY
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