(56) M. McKeown and M. W. Siegel, Am. Lab., ρ 89 (Nov. 1975). (57) P. J. Arpino, "Instrumental Applica tions in Forensic Drug Chemistry," in press, 1979. (58) M. A. Baldwin and F. W. McLafferty, Org. Mass. Spec tram., 7, 1111 (1973). (59) B. A. Hands, Vacuum, 26,11 (1975). (60) G. Davey, ibid., ρ 17. (61) P. J. Arpino and P. Krien, presented at 26th Annual Conf. on Mass Spectrom etry and Allied Topics, Abstract Paper RE6, ρ 426, St. Louis, Mo., May 28-June 2, 1978. (61a) S. Tsuge, Y. Hirata, and T. Takeuchi, Anal. Chem., 51, 166 (1979). (62) J. H. Knox and J. F. Parcher, Anal. Chem., 41,1599(1969). (63) B. L. Karger, M. Martin, and G. Guiochon, ibid., 46, 1640(1974). (64) D. Ishii, K. Hibi, K. Asai, and M. Nagaya.J. Chromatogr., 152,341 (1978). (65) D. Ishii, K. Asai, K. Hibi, T. Jonokucho, and M. Nagaya, ibid., 144,157 (1977). (66) R.P.W. Scott and P. Kucera, ibid., 169,51 (1979). (67) M. Martin, C. F.on, and G. Guiochon, ibid., 108, 229 (1975). (68) G. Blu, C. Eon, and G. Guiochon, J. Chromatogr. Sci., 12, 438 (1974). (69) I. Halasz, presented at 4th Int. Symp. on Column Liquid Chromatography, Boston, Mass., May 7-10, 1979.
Georges Guiochon is professor at the Ecole Polytechnique (France). He re ceived his P h D in physical chemistry from the University of Paris in 1958. He was appointed associate professor at the Ecole Polytechnique in 1958 and became head of the Analytical Chemistry Department in 1968. Prof. Guiochon's research interests are in the field of chromatography, where he has published 300 papers, one book, and two movies. He is a member of ACS, the Chromatography Discussion Group, and the French Chemical So cieties. Prof. Guiochon received the Tswett medal, the Stephen Dal Nogare award, and the Silver Medal of the CNRS, the French Science Founda tion.
Patrick J. Arpino is senior scientist at the Ecole Polytechnique (France). He received his P h D in organic geo chemistry from the University of Strasbourg in 1973. After two years of postdoctoral training with F. W. McLafferty at Cornell University, he joined Ecole Polytechnique in 1974. His research interests are in the in strumental aspects of GC, LC, and MS, and in the application of these techniques to organic geochemistry. Dr. Arpino is a member of the ASMS, the Geochemical Society, the Sigma Xi, and the Analytical Division of the Société Chimique de France.
HIAC Model PA-520 ASAP Automatic Sizing Analyzer Plotter
Measures particle size/volume (weight) distributions with pushbutton simplicity— delivers X-Y plots in 4 0 seconds! Just put in the sample, insert a chart and press a button. In less than a minute ASAP measures particle size and computes, in its microprocessor, particle size and volume (weight) distributions. 1 1 " χ 17" X-Y plots are automatically delivered in your choice of any or all of six different modes of data presentation, cumulative or differential. NON-ELECTROLYTIC HIAC® PRINCIPLE/ You don't have to use electrically conductive carrier fluids. You can use water, alcohol, oil, solvents—almost any liquid—even viscous fluids, with HIAC accessories. Standard sensors cover from 1 micron through 1000 microns! HIGH RESOLUTION PRECISION/ ASAP can analyze up to one million particles per sample, with an accuracy traceable to NBS certified materials. Wide-range sensors analyze broad size distributions quickly, easily. DIVERSE APPLICATIONS/ Include powdered materials of all k i n d s pigments, pharmaceuticals, metals, abrasives, ceramics, sediments, fillers, cement, ash, toners, food products. Liquid applications include emulsions, synthetic fibers, resins, agricultural chemicals, catalysts. Research and Development or Quality Control, ASAP can analyze your material quickly, accurately and easily. GET A FREE D E M O N S T R A T I O N - A S A P ! In your lab on your material— or send a sample for free analysis in our Applications Laboratory.
PACIFIC SCIENTIFIC™ P.O. Box 3007, 4719 Brooks St.
HIAC I N S T R U M E N T S DIVISION Montclair, Calif. 91763
Phone: (714) 621-3965
CIRCLE 174 O N READER SERVICE CARD ANALYTICAL CHEMISTRY, VOL. 5 1 , NO. 7, JUNE 1979 · 7 0 1 A
