The Analytical Approach Hie Analytical Approach
Jeanette G. Grasselli, Editor Brings together 52 papers from The Analytical Approach column in ANALYTICAL CHEMISTRY. Provides unique approaches to analytical science and focuses on real-world problems. Discusses topical and interesting subjects such as the analysis of the JFK assassination bullets, Mt. St. Helens ash, flavor changes in food, and failure mechanisms in spacecraft parts. Written in a "popular" style yet is highly informative. Will serve as a teaching aid in higher education or as a guide in corporate training programs on analytical capabilities.
Increasing the optical pathlength through the use of a slit nozzle (6) could also provide another order of magnitude increase in sensitivity. Conclusion The rapid growth in spectroscopic applications of supersonic nozzles can be demonstrated by considering that between 1974 and 1976 fewer than a half-dozen papers about this tech nique appeared, while in the past two years a noncomprehensive count indi cated that well over 100 papers were published. A wide variety of uses are reported in these latter papers. Mole cules as large as tetraphenylporphyrins have been studied (9), picosecond decays have been observed (9,10), and dimeric structures have been elu cidated (11). Further applications and descriptions of the technique are con tained in several review articles (12, 13). Although this list of applications is by no means exhaustive, the variety of information available does explain the growing popularity of the tech nique. Analytical applications have only begun to appear (3-6). Such a lag be tween fundamental studies and ana lytical applications is not unusual, and we are confident that as the simplici ty, high selectivity, and sensitivity of
this technique become more widely appreciated, the growth in analytical applications will mirror the rapid growth of the fundamental studies. References (1) Brown, J. C; Duncanson, J. Α.; Small, G. J. Anal. Chem. 1980,52,1711. (2) Yang, Y.; D'Silva, A. P.; Fassel, V. A. Anal. Chem. 1981,53,894. (3) Warren, J. Α.; Hayes, J. M.; Small, G. J. Anal. Chem. 1982,54, 138. (4) Hayes, J. M.; Small, G. J. Anal. Chem. 1982,54,1202. (5) Lubman, D. M.; Kronick, M. N. Anal. Chem. 1982,54,660. (6) Amirav, Α.; Even, U.; Jortner, J. Anal. Chem. 1982,54,1666. (7) Byrne, J. P.; Ross, I. G. Aust. J. Chem. 1971,24,1107. (8) Vaida, V.; McClelland, G. M. Chem. Phys. Lett. 1980,77,436. (9) Even, U.; Jortner, J. J. Chem. Phys. 1982 77 4'}91 (10) Felke'r, P. M.; Lambert, W. R.; Zewail, A. H. Chem. Phys. Lett. 1982,89, 309. (11) Levy, D. H. J. Chem. Phys. 1980, 73, 5380. (12) Levy, D. H.; Wharton, L.; Smalley, R. E. In "Chemical and Biochemical Ap plications of Lasers"; Academic Press: New York, 1977; Vol. 2, Chapter 1. (13) Levy, D. H. Ann. Rev. Phys. Chem. 1980,37, 197. Ames Laboratory is operated for the U.S. Depart ment of Energy by Iowa State University under Contract No. W-7405-Eng-82. This research was supported by the Office of Health and Environ mental Research, Office of Energy Research.
CONTENTS
Sections include: • Production Processes • Products • Environmental • Toxicity • Forensic • Miscellaneous 240 pages. (1983) Cloth bound LC 82-22618 ISBN 0-8412-0753-4 US & Canada $29.95 Export $35.95 A paperbound student edition is available in bulk quantity. For price .ind ordering information, call toll tree 800-424-6747. Order from: American Chemical Society Distribution Office — 50 1155 Sixteenth St., N.W. Washington, DC 20036 or CALL TOLL FREE 800-424-6747 and use your credit card.
Gerald J. Small (left) is a professor of chemistry at Iowa State University and a senior chemist at the Ames Laboratory-USDOE. After obtaining a BSc degree in chemistry and math ematics from the University of Brit ish Columbia, he undertook graduate studies in chemical physics at the University of Pennsylvania, where he received his PhD in 1967. Following a two-year appointment as a research fellow at the Australian National University, he joined the faculty of Iowa State University in 1969. In ad dition to lasers in chemical analysis, his research interests include the photophysics and photochemistry of
574 A · ANALYTICAL CHEMISTRY, VOL. 55, NO. 4, APRIL 1983
organic molecules and their solids, nonlinear optical phenomena, and electronic energy transfer in the con densed phase. John M. Hayes is an associate chem ist at the Ames Laboratory-USDOE. His undergraduate studies in chemis try were pursued at Providence Col lege and the State College at Boston. He received his PhD in physical chemistry from Boston University in 1974. Analytical applications of laser spectroscopy and spectroscopic stud ies of structure and dynamics in gases and solids are among his research interests.
