BRIEFS SynChrom
ION-EXCHANGE REVERSED PHASE STERIC EXCLUSION HYDROPHOBIC INTERACTION
Quantitative Analysis of Quartz and Cristobalite in Bentonite Clay Based Products by X-ray Diffraction 513 Absolute errors at the 95% confidence level are estimated to be ± 0.20% quartz and ± 0.35% cristobalite for the internal standard method and ± 0.12% quartz and ± 0.18% cristobalite for the mass absorption coefficient correction method. J. Robert Carter*, Mark T. Hatcher, and Larry Di Carlo, NL Chemicals/NL Industries, Inc., P.O. Box 700, Hightstown, N.J. 08520 Anal. Chem., 59 (1987)
Correspondence Optoacoustic Detection with a Helmholtz Resonator: Application to Trace Detection of Carcinogens 519
ENZYMES HEMOGLOBIN VARIANTS PROTEINS PEPTIDES
Leaders in HPLC of Biomolecules SYNCHROM. INC., P.O. Box 310. Lafayette. IN 47902 U S A Tel. (317) 423-4694 Telex 757756
CIRCLE 195 ON READER SERVICE CARD
Depend on
DRIERITE.
the desiccant for your laboratory drying needs
J. G. Choi and G. J. Diebold*, Department of Chemistry, Brown University, Providence, R.I. 02912 Anal. Chem., 59 (1987)
Electrochromatography Using High Applied Voltage
521
Takao Tsuda, Nagoya Institute of Technology, Gokiso-cho, Showaku, Nagoya-shi 466, Japan Anal. Chem., 59 (1987)
Thermal Lens Spectrophotometry Using a Tunable Infrared Laser Generated by a Stimulated Raman Effect 523 Shuichi Kawasaki, Totaro Imasaka, and Nobuhiko Ishibashi*, Faculty of Engineering, Kyushu University, Hakozaki, Fukuoka 812, Japan Anal. Chem., 59 (1987)
Direct Analysis of High-Performance Thin-Layer Chromatography Spots of Nucleic Purine Derivatives by Surface-Enhanced Raman Scattering Spectrometry
525
Jean-Marie L. Séquaris* and Eckhard Koglin, Institute of Applied Physical Chemistry, Nuclear Research Centre (KFA), D-5170 Juelich, Federal Republic of Germany Anal. Chem., 59 (1987)
Evolving Factor Analysis for the Resolution of Overlapping Chromatographic Peaks 527 Marcel Maeder, Institute of Inorganic Chemistry, University of Basel, Spitalstrasse 51, 4056 Basel, Switzerland Anal. Chem., 59 (1987)
* * * * *
DRIERITE - from $2.20/lb. Indicating DRIERITE - from $4.19/lb. Laboratory Gas Drying Unit — $34.95 ea. Drying Tubes — $2.50 ea. Technical Advice — FREE!
Write or call for free catalog W. A. Hammond DRIERITE Co. P. O. Box 460 See our catalog in
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Xenia, Ohio 45385 513-376-2927
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124 A · ANALYTICAL CHEMISTRY, VOL. 59, NO. 3, FEBRUARY
, 1987
