NEWS O i l Chemists to M e e t
X-RAY OR
OPTICAL EMISSION ? •
E a c h has its place. A R L ' s Production X - R a y Q u a n t o m e t e r * c o m p l e m e n t s t h e Optical Emission Q u a n t o m e t e r s a n d gives f a s t , simultaneous analysis of all e l e m e n t s a b o v e a t o m i c n u m b e r 11 ARL's new PXQ multichannel x-ray polychromator is a truly practical nondestructive analyzer for accurate, simultaneous analy sis of up to 22 elements in the 0.35A to 10.2A range. It gives exceptional flexibility for a variety of programs. The x-ray fluores cence method provides high pre cision and accuracy for major constituents, with easy sample
preparation. Optical emission gives extreme sensitivity for resid ual elements as well as elements below atomic number 12. Thus the two analytical methods are com p l e m e n t a r y . ARL's exclusive direct-reading ratio recording sys tem, interchangeable for both methods, saves time and labor. Complete quantitative analysis requires only 2 minutes.
Ask your ARL representative about increasingly popular methods of combining x-ray and optical emission instrumentation—for process control or research. Please write for full information.
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ANALYTICAL CHEMISTRY
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HOUSTON HOUSTON
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LOS LOS ANCJ ANGELES
Several topics of interest to analyt ical chemists are included in the agenda of the 33rd fall meeting of the Ameri can Oil Chemists' Society. The meet ing will be held at the Statler Hilton Hotel, Los Angeles, September 28 to 30. The technical sessions will be held on Monday and Wednesday in the morning and afternoon and on Tuesday morning. Plant tours, including Beckman Instrument Co. are scheduled for Tuesday afternoon. Further details are available from the American Oil Chemists' Society, 35 East Wacker Dr., Chicago 1, 111. Papers of possible interest to analyt ical chemists include : An Ultramicro Technique for the Measurement of Peroxides in Lipids, M. I. Peterson, Rockefeller Institute. Quantitative Determination of ShortChain (C 3 -C) Fatty Acids by GasLiquid Chromatography, Β. Μ. Craig, Prairie Regional Laboratory Saskatoon, Saskatoon, Canada. Effect of Relative Concentrations on the Efficiency of Separation of Polar and Nonpolar Lipids by Alumina-Column Chromatography, R. P. A. Sims, Canada Department of Agriculture, Ottawa, On tario. Intensity, Stability, and Absorption Spectra of Heteropoly Blue Prepared by Various Reduction Procedures, R. P. A. Sims, Canada Department of Agriculture, Ottawa, Ontario. Quantitative Analysis of Fatty Al cohols by Gas Chromatography, K. P. Dimick and Tao-Zuen Chu, Wilkens In strument and Research Co. Separation of Hydroxy Acid Methyl Esters by Gas Chromatography, K. P. Dimick, Wilkens Instrument and Re search. Co. Gas Chromatography as a Means of Quantitatively Estimating Mono-, Di-, and Triglycerides Derived from Coconut Oil, V. R. Huebner, Armour & Co. Analysis of Surfactant Mixtures, L. E. Weeks, J. T. Lewis, and T. C. Tesdahl, Monsanto Chemical Co. Isolation and Analysis of Polyunsatu rated Fatty Acids, 0. S. Privett, E. Christense Nickell, and W. O. Lundberg, Hormel Institute. Methods of Detection and Estimation of Natural Epoxy Acids and Esters, L. J. Morris and R. T. Holman, Hormel Insti tute. NMR-EPR W o r k s h o p The Third Annual NMR-EPR Work shop will be held in the Instrument Division laboratories of Varian Asso ciates, Palo Alto, Calif., October 19th through 23, 1959. This year's com prehensive lecture and laboratory course will again be given without charge to participants, except for their assumption of transportation costs to,
