Contributed Articles
874
Kinetic Waves in Systems Containing Cobalt(ll) and Cysteine-Like Compounds. Adsorption Phenomena in the Cystamine—Cobalt(ll) System in Borax Me dium. P. Mader and I. M. Kolthoff
932
Versatile Reciprocal Time Computer for Reaction Rate Methods. S. R. Crouch
880
A Unified Treatment of Electrolysis at an Expanding Mercury Electrode. Κ. Β. Oldham
936
Computer-Assisted Gas—Liquid Chromatography. H. M. Gladney, B. F. Dowden, and J. D. Swalen
883
Temperature Profiles of Turbulent Hydrogen Diffu sion Flames Used in Atomic Fluorescence Spec trometry. R. Smith, C. M. Stafford, and J. D. Winelordner
946
Determination of Arsenic by Atomic Absorption Spectrometry with an Electrodeless Discharge Lamp as a Source of Radiation. Oscar Menis and T. C. Rains
952
Simultaneous Determination of Trace Elements in Platinum by Isotope Dilution and Spark Source Mass Spectrometry. Robert Alvarez, P. J. Paulsen, and D. E. Kelleher
955
Ultra-Trace Determination of Oxygen and Carbon by Charged Particle Activation Analysis. H. L. Rook and E. A. Schweikert
958
Evaluating Dispersion in Gel Permeation Chroma tography. Axial Dispersion of Polymer Molecules in Packed Beds of Nonporous Glass Beads. R. N. Kelley and F. W. Billmeyer, Jr.
Computer Characterization of Chromatographic Peaks by Plate Height and Higher Central Moments. Eli Grushka, M. N. Myers, P. D. Schettler, and J. C. Giddings
Quantitative Interpretation of Semilogarithmic Gas Chromatographic Data. R. L. Wade and S. P. Cram
Cyanolysis and Spectrophotometric Estimation of Trithionate in Mixture with Thiosulfate and Tetrathionate. D. P. Kelly, L. A. Chambers, and P. A. Trudinger
889
893
898
Determination of Piperazine Rings in Ethyleneamines, Poly(Ethyleneamine), and Polyethylenimine by Infrared Spectrometry. H. L. Spell
902
Spectrophotometric Studies of Iron(ll) Complexes of Pyridyl Benzodiazepin-2-ones. J. 0. Sabatino, 0. W. Weber, G. R. Padmanabhan, and Β. Ζ. Senkowski
905
Coulometric Titration of Microgram Amounts of Americium at the Conducting Glass Electrode. R. C. Probst
Adsorption of Organic Molecules at a Carbon Paste Electrode. E. P. Meier and J. Q. Chambers
Optimizing Concentration Determinations in the Presence of Maxima and Catalytic and Kinetic Waves Using the Vibrating Dropping Mercury Elec trode. R. £. Cover and J. G. Connery
Kinetic Waves in Systems Containing Cobalt(ll) and Cysteine-Like Compounds. Polarographic Catalytic Hydrogen Waves in Acid Solutions of Mercaptoanilines in Presence of Cobalt(ll) or -(III). /. M. Kolt hoff and P. Mader
Notes Separation and X-Ray Spectrographs Determination of Microgram Quantities of Arsenic in Copper-, Iron-, and Nickel-Base Alloys. K. E. Burke and M. M. Yanak
963
An Improved Flux-Fusion Technique for X-Ray Emis sion Analysis. 0. A. Stephenson
966
Potentiometric Titrations of Sulfate Using an Ion-Se lective Lead Electrode. J. W. Ross, Jr., and M. S. F rant
967
Nuclear Magnetic Resonance Analysis of Rubber Vulcanizates. D. W. Carlson and A. G. Altenau
969
Determination of Total Paraffins, Monochloroparaffins, and Polychloroparaffins by the Fluorescent Indi cator Adsorption Method. T. A. Washall
971
910
914
918
924
VOL. 4 1 , NO. 7, JUNE 1969
·
3A
Contributed Articles
Klett
...
Principles and Methods of External Photochemical Titrant Generation. H. D. Drew and J. M. Fitzgerald
974
Determination of Amphetamine and Related Amines in Blood by Gas Chromatography. R. B. Bruce and W. R. Maynard, Jr.
977
Determination of E3° — E,.° for Overlapping Waves in Stationary Electrode Polarography. R. L. Myers and Irving Shain
980
Spectrophotometric Determination of Iron with 2-Pyridyl-2'-Hydroxymethane Sulfonic Acid. E. E. H. Pitt and V. M. Stanway
981
Methods for the Isolation and Characterization of Constituents of Natural Products. A Periodic Acid Column Procedure for the Oxidation of Vic-Glycols, Epoxides, and α-Hydroxy Acids at the Micromole Level. D. P. Schwartz, J. L. Weihrauch, and L. H. Burgwald
984
Correction. Resolution of Overlapping Bands. Functions for Simulating Band Shapes. R. D. B. Fraser and Eikichi Suzuki
935
Correction. Rapid Separation by Carbon Number and Determination of Naphthene and Paraffin Con tent of Saturate Petroleum Distillates up to 185 °C. J. V. Brunnock and L. A. Luke
935
Correction. An Analyzer for the Dynamic Microdetermination of Carbon, Hydrogen, Nitrogen, Sulfur, and Oxygen. George Dugan and V. A. A/u/se
935
Photometers fCletts£um*fteSlAO+l
PluUoelectl*c QlaéA. Cell
Gola»Umet&i.
No. 900-3
7Ae Klett
QUoJUmeten.
No. 2070
Designed for t h e rapid and accurate determination of thiamin, riboflavin, and other substances which fluoresce, in solution. The sensitivity and stability are such t h a t it has been found particularly useful in determining very small a m o u n t s of these substances.
.KLETT SCIENTIFIC PRODUCTS, PHOTOELECTRIC COLORIMETERS · BIO-COLORIMETERS COLORIMETER-NEPHELOMETERS · COLONY MARKER • KLETT REAGENTS · GLASS CELLS
Klett
High-Stability Low-Noise Precision Spectrometer Us ing Optical Feedback. H. L. Pardue and S. N. Dem/ng
986
Electrolytic Dissolution of Tantalum, Niobium, and Other Refractory Metals. A. Aladjem
989
Dielectric Percentage Saturation Detector. Gelb and S. N. Steen
990
E. J.
Manufacturing Co., Inc.
179 EAST 87TH S T R E E T , NEW YORK, Ν. Υ. Circle No. 45 on Readers' Service Card
4 A ·
Aids for Analytical Chemists
ANALYTICAL CHEMISTRY
An Improved Procedure for Solid Scintillation Fluorography of Tritium-Labeled Compounds. K. Randerath
991
