Contributed Articles
218
Fast Reaction Flow System Using Crystal-Membrane Ion-Selective Electrodes. H. I. Thompson and G. A. Rechn/tz
300
An Automated Stopped-Flow Spectrophotometer with Digital Sequencing for Millisecond Analyses. P. M. Beckwith and S. R. Crouch
221
Coulometric Microdeterminatian of Neodymium Using Feedback-Controlled Electrolysis Current. J. E. McCracken, J. C. Guyon, and W. D. Shults
305
Modification of an ΑΕΙ MS12 Mass Spectrometer for Chemical Ionization. A. M. Hogg
227
Comparison of Coulostatic Data Analysis Techniques. J. M. Kudirka, P. H. Daum, and C. G. Enke
309
Interfering Ions in the Elemental Analysis of Biological Samples by Mass Spectrometry. N. L. Gregory
231
Some Experimental and Theoretical Correlations for the Use of Fundamental Harmonic Alternating Current Polarography. A. M. Bond
315
Detection and Determination of Some Carboxylic Acids in Aqueous Solution by Nickel(ll)-Catalyzed Hydroxamic Acid Formation. K. A. Connors and J. W. Munson
336
LABTRAN—A Language and System for Programming Chemical Experiments. E. C. Toren, Jr., R. N. Carey, A. E. Sherry, and J. E. Davis
339
A New Machine for Automated Solid Phase Peptide Synthesis. V. J. Hruby, L. E. Barstow, and Theo Linhart
343
Errors in Theoretical Correction Systems in Quanti tative Electron Probe Microanalysis—A Synopsis. K. F. J. Heinrich
350
Automated Method for Determination of Nitrilotriacetic Acid in Natural Water, Detergents, and Sewage Samples. B. K. Afghan, P. D. Goulden, and J. F. Ryan
354
Effect of Carbon-Loading upon Product Distribution of Laser-Induced Degradations. W. T. Ristau and Ν. Ε. Vanderborgh
359
Kinetic and Mechanistic Study of the Reduction of Copper(ll) in Lithium Nitrate Using Alternating Current Polarography. F. M. Hawkridge, Jr., and H. H. Bauer
364
Simple and Versatile Atomic Fluorescence System for Determination of Nanogram Quantities of Mercury. V. /. Muscat, T. J. Vickers, and Anders Andren
Capillary Cell for Phosphorimetry of Organic Molecules in Aqueous Solvents at 77 *K. R. J. Lukasiewicz, P. A. Rozynes, L. B. Sanders, and J. D. Winefordner
237
Burner and Ultrasonic Nebulizer Improvements for Atomic Absorption Spectrometry. M. B. Denton and H. V. Malmstadt
241
Measurement of Flame Temperatures by a Two-Line Atomic Absorption Method. R. F. Browner and J. D. Winefordner
247
Comments on Simultaneous Determination of Κ and ΔΗ. Analysis of Some Calorimetric Data Concerning the Formation of Bisulfate Ion in Aqueous Solution. Sergio Cabani and Paolo Gianni
253
New Computerized Infrared Substance Identification System. R. W. Sebesta and G. G. Johnson, Jr.
260
Signal-to-Noise Ratio in Fourier Transform Spectrom etry. H. M. Pickett and H. L. Strauss
265
Gas-Solid Chromatography of Organic Compounds Using Steam as the Carrier Gas. Akira Nonaka
271
Improved Continuous Radio Gas Chromatography of Hydrogen-3- and Carbon-14-Labelled Compounds Using Hydrocracking. Rolf Blomstrand, Josef Gurtler, Lars Liljeqvist, and Goran Nyborg
277
Electrodeposition of Actinides for Alpha Spectrometric Determination. N. A. Talvitie
280
Selectivity of Cyclic Polyether Type Liquid Membrane Electrodes. G. A. Rechnitz and Ehud Eyal
370
Determination of Gold and Silver in Parts-Per-Billion or Lower Levels in Geological and Metallurgical Samples by Atomic Absorption Spectrometry with a Carbon Rod Atomizer. M. P. Bratzel, Jr., C. L. Chakrabarti, R. E. Sturgeon, M. W. Mclntyre, and Haig Agemian
372
294
Sodium Analysis with a Tunable Dye Laser. Sturgeon, M. W. Mclntyre, and Haig Agemian
372
297
Improved Amperometric Procedure for Determining Plutonium. C. E. Hedr/ck, C. E. Pietri, A. W. Wenzel, and M. W. Lerner
Electrodeposition of Alpha-Emitting Nuclides from a Mixed Oxalate-Chloride Electrolyte. K. W. Puphal and D. R. Olsen
284
Analytical Monitors Using Electrodes of Semicon ductors (Germanium, Indium-Antimonide and Silicon). J. P. McKaveney and C. J. Byrnes
290
Anodic Background Reaction in Moist Acetonitrile. L. C. Portis, J. C. Roberson, and C. K. Mann Rotating Gold Ring-Disk Study of Tin(ll) in 4.0M Hy drochloric Acid. V. A. Vicente and Stanley Bruckenstein
Notes
Jurgen
ANALYTICAL CHEMISTRY, VOL. 44, NO. 2, FEBRUARY 1972
377 ·
3A
Contributed Articles Spectrophotometry Determination of Micro Amounts of Ascorbic Acid in Citrus Fruits. Bruno Jaselskis and Joseph Nelapaty Cyanide Extraction and Electrodeposition of Trace Amounts of Radioactive Silver from Large Biological Samples. V. F. Hodge and T. R. Fo/som Determination of Traces of Uranium by Radioisotope Energy Dispersive X-Ray (EDX) Analysis. C. C. Bertrand and T. A. Linn, Jr.
Correspondence 379
381
383
Rapid Gas Chromatographic Assay for Heroin in Illicit Preparations. J. M. Moore and F. E. Bena
385
Gas Chromatographic Analysis of Off-Gas from Hydrocarbon Pyrolysis. D. E. Willis
387
Rapid Photochemical Determination of Uranium(VI) at Trace Levels. W. M. Riggs
390
Use of a Substrate Gradient in the Automated Determination of Ornithine Transcarbamylase. Albert Himoe, G. f_. Cat/edge, and W. E. Kurtin New Sensitive Method for Quantitative Assay of Ammonia in Air. D. N. Kramer and J. M. Seen
391
395
New Reaction Mixture for the Spectrophotometric Determination of N-Acetylhexosamines. Surinder Kumar and P.M.T. Hansen
398
Anomalous Fluorescence and Excited State Protolysis of 8-Mercaptoquinoline. S. G. Schulman
400
Gas Chromatography of the Positional Isomers of Long Chain Amines and Related Compounds. L. D. Metcalfe and R. J. Martin
423
Charge-Step Polarography. and C. G. Enke
425
J. M. Kudirka, Roger Abel,
Modified Method for Spectrophotometric Determination of Monoamine Oxidase Activity. Boris Tabakoff and S. G. A. Alivisatos
408
Automated Digestion System for Safe Use of Perchloric Acid. M. K. John
429
Conversational Text Editor for a Laboratory Minicomputer. H. P. Yule
430
Direct Infrared Analysis of Alpha Quartz Deposited on Filters. S. Z. Toma and S. A. Goldberg
431
Constant-Level Liquid Feed-Control for High Purity Distillation Apparatus. K. D. Burrhus and S. R. Hart
432
410
411
Base Strengths in Acetic Acid-Chlorohydrocarbon Binary Solvents. O. W. Koi/ing
414
Comparison of Acetylcholinesterase Determinations by the Michel and Ellman Methods. K. (. Hawkins and C. E. Knittle
416
Determination of Nitrilotriacetic Acid by High-Speed Ion Exchange Chromatography. J. E. Longbottom
418
427
Aids for Analytical Chemists
403
Forensic Identification of Heroin in Illicit Preparations Using Integrated Gas Chromatography and Mass Spectrometry. G. R. Nakamura, T. T. Noguchi, Dan Jackson, and Dave Banks
4A ·
Computer Matching of Pyrolysis Chromatograms of Pathogenic Microorganisms. F. M. Menger, G. A. Epstein, D. A. Goldberg, and E. Reiner
© Copyright 1972
405
Determination of Solubility Product Constants of Some 1:1 Silver Salts of Thiols by Direct Competition with Silver Iodide. Z. C. H. Tan, R. C. Vought, and R. B. Pontius
421
by the American Chemical Society
Burner Memory Following Atomic Absorption Spectrophotometric Analysis of Moderately Volatile Organometallic Complexes. D. R. Bryant and A. R. Hodges
Ion Exchange Separation and Determination of Lead in Steel by Atomic Absorption. N. G. Seders
Simulation Study of Effects of Heatup Rates and Temperature Fluctuations on Weight Loss Curves. J. B. Cay le and C. T. Egger
ANALYTICAL CHEMISTRY, VOL. 44, NO. 2, FEBRUARY 1972
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