Inductively Coupled Plasma-Opti cal Emission Analytical Spectrosco py: Application to the Simultaneous Multielement Determination of Trace Metals in Biological Materi als. R. N. Kniseley, V. A. Fassel, C. C. Butler, Ames Laboratory-US AEC, Iowa State University, Ames, Iowa 50010 Spectrochemical Analysis of Trace Metals at the P P B Level Using Exploding-Wire Excitation. R. D. Sacks, J. A. Holcombe, University of Michigan, Ann Arbor, Mich. 48104 Analysis of Rhenium by Mass Spectrometric Isotope Dilution. J. W. Gramlich, T. J. Murphy, NBS, Washington, D.C. 20234 On-Line Microcomputer System for Scanning X-ray Diffraction. J. B. Pausch, R. E. Arner, B. F. Goodrich Co., Breckville, Ohio 44141 Quantitative Determination of Alpha Quartz in Respirable Found ry Dust Samples by X-ray Diffrac tion. R. J. Koch, Armco Steel Corp., Middletown, Ohio 45042 Application of Exclusive-Or (XOR) Logic Operations to the Identifica tion of Elemental Emission Spectra Measured Using a Photodiode Array Direct Reading Spectrome ter. E. G. Codding, G. Horlick, Uni versity of Alberta, Edmonton, Alta., Canada T6G2G2
Sampling and Characterization of Particulates Chairman: E. W. White, Pennsylvania State University, University Park, Pa. 16802
Sampling of Powders and Aerosols. Β. Η. Kawe, Institute of Fine Particle Research, Laurentian University, Sudbury, Ont., Canada Estimation of Particle Size Distri butions from Light Scattering Methods. K. C. Yang, R. Hogg, Pennsylvania State University, Uni versity Park, Pa. 16802 Automated Quantitative SEM Characterization of Complex Par ticulate Systems. G. G. Johnson, Jr., E. W. White, Pennsylvania State University, University Park, Pa. 16802 Approaches to Particulate Charac terization. I. Stewart, Walter C. McCrone Assoc, 2820 S. Michigan Ave., Chicago, 111.
Thursday Afternoon, Nov. 15
Hasler Award Symposium Chairman: William A. Gordon, NASA Lewis Research Center, Cleveland, Ohio 44135
Award Address: Molecules We Have Recently Met. Foil A. Miller, University of Pittsburgh, Pittsburgh, Pa. 15260
Raman Spectroscopy and Struc tures of Proteins and Nucleic Acids. Richard C. Lord, MIT, Cambridge, Mass. 02139 Torsional Frequencies in Substitut ed Phenols. Gerald L. Carlson, Car negie-Mellon University, Pittsburgh, Pa. 14213 Foil's Twisted Past. William G. Fateley, Kansas State University, Man hattan, Kan.
Blockage-free, trouble-free
SLURRY VALVES from Kent EIL
Air Pollution Measurement Instrumentation Chairman: Andrew E. O'Keeffe, Environ mental Protection Agency, Research Triangle Park, N.C. 27711
Continuous Formaldehyde Gas Monitor Using Microwave Rota tional Absorption Spectrometry. Larry Hrubesh, Lawrence Livermore Laboratory, University of California, Livermore, Calif. 94550 Chemiluminescence Methods for Monitoring of Air Pollutants: Sta tus & Potential. Arthur I. Fontijn, AeroChem Research Laboratories, Princeton, N.J. 08540 Instruments Which Detect by Means of Infrared Vibration-Rota tion Spectrum. Philip A. Hanst, En vironmental Protection Agency, Re search Triangle Park, N.C. 27711 Fluorescence Determination of At mospheric Pollutants. Milton Birnbaum, Aerospace Corp., Los Angeles, Calif. 90009
Central branch of the T-piece incor porates a poppet valve which is held sealed by the line pressure. When the valve is actuated, the poppet Is lifted from its seating and the reagent is de livered via the exit port.
Toxicology in Clinical Chemistry
Model 1630 slurry valves are pneumatic or electrically operated on-off control valves. They're de signed to handle slurries and other difficult process media. Two versions are available—an in-line version for applications where slurries are continuously circulated by pump, and an in-tank version for slurries kept in suspen sion by agitation. Both have their valve openings in direct contact with slurries. Both eliminate easily blocked dead spaces and dead sections of pipeline preceding the valve.
Chairwoman: D. S. McCann, Wayne County General Hospital, Eloise, Mich. 48132
Title to be announced. C. Winek, Duquesne University, Pittsburgh, Pa. 15219 Title to be announced. R. Scala, Medical Research Division, Exxon Research and Engineering, Linden, N.J. 07036 Role of Biotransfer Formation Reactions in Prenatal and Postna tal Chemical Toxicity. J. Gibson, Medical School, Michigan State Uni versity, Lansing, Mich.
Our corrosion-resistant, iy2-inch bore Model 1630s make fine re motely operated process control valves. There's nothing like them for regulating additions of lime slurry, caustic soda and other alkalis to neutralize acid effluents.
Ion-Selective Electrodes Chairman, G. A. Rechnitz, State Universi ty of New York, Buffalo, N.Y. 14214
Standard Activity Scales for IonSelective Electrodes. R. G. Bates, Univ. of Florida, Gainesville, Fla. 32601 Ion-Selective Electrode Measure ment Techniques. M. J. D. Brand, Technicon Instruments Corp., Tarrytown, N.Y.10591 New Biochemical and Biomedical Uses of Ion-Selective Electrodes. G. A. Rechnitz, State University of New York, Buffalo, N.Y. 14214
For technical data and engineering assistance, please write:
KENT CAMBRIDGE INSTRUMENT COMPANY Division of Kent Cambridge Corp. 73 S p r i n g S t r e e t , O s s i n i n g , N.Y. 10562 (914) 941 -8100 T e l e x 137-337 IN CANADA KENT CAMBRIDGE LIMITED Thornhilt, Ontario, Canada (416) 889-8330 Telex 06-217518 CIRCLE 1 3 7 O N READER SERVICE CARD
ANALYTICAL
CHEMISTRY,
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12, OCTOBER
1973
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991
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