Micro/IR Systems From Digilab With Digilab's new MICRO/IR Systems, you can easily measure the infrared transmittance and reflectance spectra of samples as small as 20 microns in diameter with no time-consuming pinhole masking. Using Digilab's dedicated MICRO/IR Systems, you can visibly locate the sample with a horizontal X-Y positioning stage under the highpowered microscope objective. The coaxial visual alignment capability assures that you are measuring the exact area of interest —what you see is what you get! The high optical thruput of the Digilab MICRO/IR Systems delivers 110mw of infrared energy to optimized mating optics and a special MCTdetector which permits routine micro analysis of most any material. The sampling area can be rectangular or circular and varied con tinuously from 250 microns down to less than 20 microns. Also available are a computer controlled X-Y stage for sample mapping, and the new Digilab 3200 data system making the MICRO/IR a general purpose FTIR instrument! For detailed information on the MICRO/IR and other microsampling options, look to Digilab, the long-time technical leader in FT-IR.
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Briefs
Open Split Interface for Capillary Gas Chromatography/Mass Spectrometry
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R. F. Arrendale*, R. F. Severson, and Ο. Τ. Chortyk, Tobacco Safety Research Unit, Agricultural Research Service, United States Department of Agriculture, P.O. Box 5677, Athens, Ga. 30613 Anal. Chem., 56 (1984) Device for Studying Heat-Induced Surface Reactions by Infrared Spectrometry 1537 P. J. Zanzucchi* and W. R. Frenchu, RCA Laboratories, Princeton, N.J. 08540 Anal. Chem., 56 (1984) Use of Surfactants To Improve Analytical Performance of Lucigenin Chemiluminescence
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Lori L. Klopf and Timothy A. Nieman*, School of Chemical Sciences, University of Illinois, 1209 West California Street, Urbana, 111. 61801 Anal. Chem., 56 (1984) Laser-Induced Fluorescence Spectrometry of Methylnaphthalene Derivatives Prepared in a Low-Temperature Aromatic Crystal
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Steven M. Thornberg and Jon R. Maple*, Department of Chemistry, University of New Mexico, Albuquerque, N.M. 87131 Anal. Chem., 56 (1984) Hydride Generation and Atomic Emission Spectrometry with Helium Glow Discharge Detection for Analysis of Biological Samples 1545 Kazuko Matsumoto**, Toshio Ishiwatari, and Keiichiro Fuwa, Department of Chemistry, Faculty of Science, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan Anal. Chem., 56 (1984) Calculation of Free Llgand Concentration by a Taylor's Series Approximation in the Study of Molecular Complex Stability Constants
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Kenneth A. Connors*, School of Pharmacy, University of Wisconsin, Madison, Wis. 53706, and David D. Pendergast, The Upjohn Company, Kalamazoo, Mich. 49001 Anal. Chem., 56 (1984) Technique for Storage of Breath Samples for Hydrogen Determination 1550 Anita R. Tierney and Donald P. Kotler*, Gastrointestinal Division, Medical Service, St. Luke's-Roosevelt Hospital Center and the Department of Medicine, Columbia University College of Physicians & Surgeons, New York, N.Y. 10025 Anal. Chem., 56 (1984)
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