PITTCON 2:10 (944) Analysis of Carbohydrates Derived from Tryptic Fragments ot Bovine Fetuin by Microcolumn LC with Fluorescence Detection—0 SHIROTA. Indiana University. D. Rice. M. Novotny 2:30 (945) Determination of DNA-benzo|a|pyrene Adducts Using HPLC with Laser Induced Fluorometric Detection—R. WANG, University of Missouri, J.W. O'Laughlin 2:50 (946) DNA Hybridization Analyzed by HPLC—R. SAHAI. Diagnostic Specialties. Inc.. R. Pagnucco. M. Rrunner 3:10
RECESS
3:25 (947) Amine Determinations by HPLC with Silica-Based D e r e a l i zation Reagents—F.X. ZHOU, Northeastern University, H.M. Zhang, I.S. Krull 3:45 (948) Automated Amino Acid Analysis Using Precolumn D e r e a l i zation and Reversed-Phase HIgh-Performance Liquid Chromatography—J. KIBBY, ICI Instruments, L.G. Greig, P.A. Haynes, J.W. Redmond, D.D. Sheumack 4:05 (949) Microsample Handling in HPLC on the Example of Automat ed Precolumn Derivatlzation of Amino Compounds—C. GOONER, Perkin-Elmer GmbH, B. Seitz, M. Steinwand, W. Vogel 4:25 (950) Determination of Free Amino Acids in Biological Samples by HPLC and the Problems of Quantitation—G A. QURESHI. Huddinge University Hospital. A.R. Qureshi, C.G. Groth 4:45 (951) Quantitation of Tryptophan and Its Metabolites in Cerebro spinal Fluid of Male Rats Under Sexual Activity and Pharmacological Conditions by Ion-Pair HPLC—G.A. QURESHI, Huddinge University Hospital, G. Forsberg, I. Bednar, P. Sodersten
HPLC—Ion Chromatography Thursday Afternoon, North Building, Mezzanine Level, Room M1B R.A. Henry. Presiding Keystone Scientific. Inc.
Now quadrupole gas analysis, to go!
Now, in addition to high perfor mance rack-mount and bench models, Ametek can also offer you a mobile Dycor™ Quadrupole
Gas Analyzer. A perfect, go-anywhere, microprocessor-based mass spectrometer that can handle all your gas analysis, process monitoring, or leak detection applications. And tell you in a glance at the high resolution display—exactly what's in your sample, off-gas, or vacuum system. Standard Features Π 1-100 AMU Mass Range D Faraday Cup Detector D 100% Front Panel Control Π HighResolution CRT Display Π Graph or Tabular Data Display D RS232 Computer Interface D 5 χ 10 ' Torr Minimum Detectable Partial Pressure D Background Subtraction
1:30 (952) An Improved Eluent Buffer for Nonsuppressed Ion Chroma tography— D.W. TOGAMI, Interaction Chemicals Inc. 1 50 (953) Determination of Chloride, Nitrate, and Sulfate in N-Methylpyrrolidone by On-line Preconcentration and Ion Chromatography with Conductivity Detection—RM. IANNIELLO, GAF Chemicals Corporation 2:10 (954) Determination of Trace Metals in Concentrated Acids, Bases, Salts, and Organic Solvents by Chelation Ion Chromatography—Μ Ρ HARR0LD. Dionex Corporation, A. Siriraks. J. Riviello 2:30 (955) Determination of Cobalt and Nickel as Chelates with 4-(2Thiazolylazo) Resorcinol by Reversed-Phase High-Performance Liquid Chroma tography—C.S. LIN. Univ. of Sci. and Tech. of China. X.S. Zhang, X.Z. Lin. L.L Hua 2:50 (956) Indirect Detection Chromatography of Anions Using Naphtha lene Sulfonate as the Mobile Phase—S.A MAKI. Miami University, N.D. Danielson 3:10
RECESS
3:25 (957) Determination of Chlorides in Epoxy Resins by Ion Chroma tography—Ε J TORRES. Dow Chemical Co. 3:45 (958) Ion Chromatography with Conventional HPLC Equipment—M RIEDMANN. Hewlett-Packard GmbH. W. Ni. Β. Glatz 4:05 (959) Restoring Reversed-Phase HPLC Columns to Original Se lectivity In Ion Pair Chromatography—J.D. RATEIKE, Regis Chemical Company, J. A. Perry 4:25 (960) Effect of Cathionlc and Anionic Counterlons on the Re versed-Phase Ion-Pair Chromatography of Water Soluble Vitamins—M.D. WEISS, Lederle Laboratories, T. Tarumoto
Optional Features • 1-200 AMU Mass Range • Pressure vs Time Display • Graphics Printer For Hard Copy • Electron Multiplier • 5 χ 10 M Torr Minimum Detectable Partial Pressure • Sample System For Higher Pressures For literature, contact AMETEK, Process and Analytical Instruments Division, 150 Freeport Road, Pittsburgh, PA 15238. Tel: (412) 828-9040.
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168 A · ANALYTICAL CHEMISTRY, VOL. 63, NO. 3, FEBRUARY 1, 1991
