Contributed Articles Rapid Separation of Metal Chelates by Column LiquidLiquid Chromatography Using Ultraviolet Detection. J . F. K. Huber, J . C . Kraak, a n d H a n s Veening
Determination and Prediction of Anomalous Response Factors for Halogenated Substances with the T h e r m a l Conductivity Detector. E. F. Barry, R. S. Fischer, a n d D. M. Rosie
Improved Instrumental Determination of Oxygen in Or ganic Compounds by Pyrolysis-Gas Chromatography. E. Pella and B. Colombo
Determination of Alkoxy and Vinyl in Siloxane Materials Using Alkali Fusion Reaction and Gas Chromatography. C. L. Hanson and R . C . S m i t h
Pulse Characteristics of the Flame Ionization Aerosol Particle Analyzer. H. C. Bolton a n d I. G. McWilliam
Application of Ozonolysis and Gas Chromatography for Structure Elucidation of Substituted Vulpinic Acids. E. R. White, B. M. S u t t o n , J . E. Blank, Enno M o e c k e l , and J . E. Z a r e m b o
Open-Tube-Column Gas Chromatography Fluxes. J . C . H a s s o n a n d M. V. Kulkarni
of
1554
1559
1563
1571
1575
Determination of Trace Quantities of Volatile Fluoride in U r a n i u m Hexafluoride Using an Infrared Spectro photometer. R a y m o n d A u b e a u , Gerard B l a n d e n e t , and Guy Brogniart
16Z8
Extraction of Anions into Chloroform by Surfactant Cations. Relevance to Dye Extraction Method of Anal ysis of Long Chain Amines. H. K. Biswas and Β. Μ. Mandai
1636
Interaction of Methanehydroxyphosphonic Acid and Ethane-l-hydroxy-l,l-diphosphonic Acid with Alkali and Alkaline Earth Metal Ions. Hiroko Wada and Quintus Fernando
1640
Vanadium Determination in Biological Material at Nano gram Levels by a Catalytic Method. R. M. Welch and W. H.AIIaway
1644
Influence of Amalgam Formation on Cyclic Voltammetry. F. H. Beyerlein and R. S. Nicholson
1647
Electrochemistry of Lucigenin. a n d D. M. Hercules
1650
K. D. Legg, D. W. Shive,
1582
Rosin
Ion-Selective Electrode Study of Copper(l) Complexes in Acetonitrile. L. F. H e e r m a n and G. A. Rechnitz
1655
Reduction Campbell
1659
1586
Raman Spectra-Structure Correlation for Pyrazines. New Method for Obtaining Spectra of Trapped Nanoliter Gas Chromatograph Fractions. R. P. Oertel a n d D. V. Myhre
1589
Effect of Acids on Fluorescence of Acetylsalicylic Acid and Salicylic Acid. Filter Fluorometric Aspirin Analysis. G. H. Schenk, F. H. Boyer, C. I. Miles, and D. R. Wirz
1593
of
Aromatic
Fluorine
Compounds.
High Sensitivity Thermochemical Analysis. C.S. Barnes, a n d P. W.Carr
1598
Electronic Spectra of 2-Aminoquinolone and 4-Aminoquinaldine. Evidence for the Cyclic Amidine Structures of the Singly Protonated Cations. P. J . Kovi, A. C. Copom a c c h i a , a n d S. G. S c h u l m a n
1611
New, Directly Digital Automatic Titration G. M. H i e f t j e a n d B. M. M a n d a r a n o
1616
Apparatus.
Miniature On-Line Digital Computer for Multipurpose Applications. Applications to Kinetic Analyses. R. A. P a r k e r a n d H. L. Pardue
1622
Η.
Ε. Β. S m i t h , 1663
Notes Automatic Sorting of Infrared Spectra.
Accuracy of Quantitative Electron Probe Microanalysis with Energy Dispersive Spectrometers. D. R. B e a m a n a n d L. F. Solosky
Β.
Titration of Amines in Acetone. Burgett
C. S. Rann
1669
J . S. Fritz a n d C. A. 1673
Colorimetric Identification and Quantitation of Methaqualone in Toxicological Specimens. J . N. Pirl, V. M. R o t t e r m a n , and F. F. Fiorese
1675
Determination of Hexahydro-l,3,5-Trinitro-s-Triazine (RDX) in Octahydro-l,3,5,7-Tetranitro-s-Tetrazocine ( H M X ) by Infrared Spectrophotometry. J . W . Grindlay
1676
Quantitative Measurements on Gold-Silver Alloys by X-Ray Photoelectron Spectroscopy. P . E . L a r s o n
1678
ANALYTICAL CHEMISTRY, VOL. 4 4 , NO. 9, AUGUST 1972
•
3 A
Contributed Articles Selective Potentiometric Titration of Calcium with EGTA Using Silver Ion Indicator. I. E. Lichtenstein, Ella Coppola, and D. A. Aikens
"Color T e m p e r a t u r e " Atomic Fluorescence Method for Flame Temperature Measurement. N i c o l o O m e n e t t o , R. F. Browner, J . D. Winefordner, Guglielmo Rossi, and Pietro Benetti
Signal-to-Noise Ratio Characteristics of Photomultipliers and Photodiode. An Exchange of Comments. J . 0 . Ingle, Jr., a n d S. R. Crouch
1681
1709
Aids for Analytical Chemists Improved Diffusion Dilution Cell for Introducing Known Small Quantities of Liquid into Gases. A. C. S a v i t s k y a n d Sidney Siggia
1712
Combined Ion Exchange-Solvent Extraction (CIESE) Studies of Metal Ions on Ion Exchange Papers. Syner gistic Effects, Chromatographic Separations. Anil K. De a n d C. R. Bhattacharyya 1686
Versatile Polarographic N e i l s e n a n d J . D.Stuart
1713
Ozonometric Determination of Olefinic Unsaturation. M. M . S m i t s and Dirk H o e f m a n
1688
Preparation of Hydrofluoric, Hydrochloric, and Nitric Acids at Ultralow Lead Levels. J . M. Mattinson
1690
Modulated Power Supply for Hollow Cathode Light Sources. B. E. Holder, Robert L i m , A. S. M a d d u x , and G. M.Hieftje 1716
Fluoride Ion Activity Electrode as a Suitable Means for Exact Direct Determination of Urinary Fluoride. Jan Tusl
1693
Pyrolytic Graphite-Tube Micro-Furnace for Trace Anal ysis by Atomic Absorption Spectrometry. K. I. Aspila, C. L. Chakrabarti, and M. P. Bratzel, Jr.
Use of Potassium Phthalimide for Identification of Alkylene Bis Halides and Bis Sulfonates. C. F. H. Allen and J . P. Glauser
1694
Methenamine Mandelate Assay Procedures Based on a 2:1 Silver Nitrate-Methenamine Complex. C. A. Gaglia, Jr., L. A. Gosser, and Lester Chafetz
1683
Function
Generator.
C.
J.
© Copyright 1972 by the American Chemical Society
Selectivity Studies of Anion-Selective Membrane Elec trodes. Stig Back
Polarographic Reduction of Tin(IV) in the Presence of α-Mercaptopropionic Acid. Atsuyoshi Saito and SadayukiHimeno
1696 MANUSCRIPT REQUIREMENTS published in December 1971 issue, page 2039, outlines scope and copy requirements to be observed in preparing manuscripts for consideration. Manuscript (4 copies) should be submitted to ANALYTICAL CHEMISTRY, 1155 Sixteenth St., N.W., Washington, D. C. 20036. The American Chemical Society assumes no responsibility for the statements and opinions advanced by contributors to its publications. Views expressed in the editorials are those of the editors and do not necessarily represent the official position of the American Chemical Society.
1698
1972 Subscription Rates
Relation between Retention Indices and Boiling Points of Hydrocarbons Differing Slightly in Their Vapor Pres sures. Ladislov Sojâk, Jan Hrivnâk, Jân Krupcik, and Jaroslav Janâk
Species Identification in Visible-Ultraviolet Vapor Spectrometry. D. S. Alderdice and B. R. Crawford
Members, domestic and foreign Nonmembers, domestic and Canada Nonmembers, foreign except Canada
1701
Correspondence 1706
Some Comments on the Signal-to-Noise Characteristics of Real Photomultiplier and Photoiode Detection Systems. R.E. Santini
1708
4 A
•
ANALYTICAL CHEMISTRY, VOL. 4 4 , NO. 9, AUGUST
2 yr.
3yr.
$9.00 12.00 27.50
$12.00 16.00 40.00
Postage: Canada and Pan-American Union, $4.00; foreign, $5.00. Single copiés: current, $2.00 except Annual Reviews, $3.00 each. Rates for back issues and volumes are available from Special Issues Sales Dept., 1155 Sixteenth St., N.W., Washington, D. C. Claims for missing numbers will not be allowed if received more than 60 days from date of mailing plus time normally requires for postal delivery of journal and claim. No claims allowed because of failure to notify the Subscription Service Department of a change of address or because copy is "missing from files." Those interested in joining the American Chemical Society should write to Admissions Department at the Washington Office. Published monthly with Review issue added in April and a Laboratory Guide in August by the American Chemical Society, from 20th and Northampton Sts., Easton, Pa. 18042; Executive Offices, Editorial Headquarters, and Subscription Service Department, 1155 Sixteenth St., N.W., Washington, D. C. 20036; Advertising Office, 142 East Ave., Norwalk, Conn. 06851. ANALYTICAL CHEMISTRY and other ACS periodicals are available on microfilm. For information write to: MICROFILM, Special Issues Sales, American Chemical Society, 1155 Sixteenth St.. N.W., Washington, D. C. 20036. Second class postage paid at Washington, D. C. and at additional mailing offices. CHANGE OF ADDRESS: Notify Subscription Service Department, American Chemical Society. 1155 Sixteenth St., N.W., Washington, D. C. 20036. Such notification should include both old and new addresses, with ZIP code numbers, and be accompanied by mailing label from a recent issue. Allow four weeks for change to become effective.
1703
Determination of Low Surface Areas by the Continuous Flow Method. Seymour Lowell and Stewart Karp
lyr. $ 5.00 7.00 15.00
1972
171S
1718
