News T h e p u m p radiation in the experi ment was focused with a 5-cm focal length calcium fluoride lens to a spot size of 5 fim at the center of a 250μπι-diameter aperture, which replaced the entrance slit of a normal incidence vacuum spectrometer. In the earlier experiment last fall, the researchers had used both helium and neon with gas pressures at 40 torr to generate the fifth harmonic of the mode-locked laser pulses at 266.1 nm. T h e p u m p radiation was focused with a 10-cm calcium fluoride lens to a spot size of 10 Mm at the center of a 500-Mm-diameter aperture.
Call for Papers
Shown is the interior of one of the five air pollution monitoring trailers delivered to the Du Pont Savannah River Plant in South Carolina. Included in the specially equipped, air conditioned trailer is instrumentation to automatically monitor and record the levels of S0 2 , H2S, and residual sulfurs in air down to the ppb level. All equipment is shock mounted in these trailers assembled by Tracor, Inc. The trailers cost about $20 000 and include special inert sample canes, automatic sulfur gas chromatographs, chart record ers, sulfur calibration systems based on permeation tubes, and hydrogen generators
"buying plans". This was the largest percentage for any show in the survey. Also reported is t h a t 95% of the at tendees at the Conference had "buying influence", topping its closest competitive show in this list, the Super Market Institute, which scored 93%. T h e "audience interest factor", measured as the average percentage of the audience who stopped to talk or acquire literature at a minimum of 2 out of 10 exhibits from a selected list of 20-25 exhibits included on the sur vey's questionnaire, also produced a high score for the Conference. Placing second on a list of 10 shows with the highest audience interest factor, the Pittsburgh Conference had 75% and was exceeded in this figure only by the Association of Operating Room Nurses with 83%. T h e overall trends in shows for 1976 as determined by the survey indicated t h a t both audience quality and activi ty indicators equaled the previous alltime highs measured in 1974. Most figures were up, such as attendance, numbers of exhibitors, and net square footage of exhibit space. T h e article cited above gave details of the survey techniques and the meaning of the re sults. In assessing the impact of individu al exhibitors, a measure was made of "most remembered" exhibits. In this
survey question, attendees were asked to name three of the exhibits t h a t most attracted their attention. T h e only Conference exhibitor making the list of 10 most remembered exhibits in 1976 was Perkin-Elmer.
Laser Radiation Generated at 38 nm At the Naval Research Laboratory, optical scientists led by J o h n F. Reintjes have generated coherent laser radiation at a wavelength of 38 nm. This tops the team's earlier achieve ment, 53.22 nm, reported last fall. T h e six-member group is seeking improved x-ray laser systems t h a t would provide scientists a new tool for the micro scopic study of crystals and giant mol ecules. These systems could also be used to process and test new materials and provide a new technique for pro ducing super-miniaturized electronic microcircuits. T h e coherent radiation was generat ed in helium at pressures up to 120 torr by seventh harmonic conversion of mode-locked laser pulses at 266.1 nm (the fourth harmonic of a Nd: YAG laser). T h e radiation was observed photographically with Kodak 101-01 film and photoelectronically with a windowless solarblind photomultiplier.
802 A • ANALYTICAL CHEMISTRY, VOL. 49, NO. 9, AUGUST 1977
29th Pittsburgh Conference on An alytical Chemistry and Applied Spectroscopy Cleveland Convention Center, Cleve land, Ohio. Feb. 27-Mar. 3,1978. Pa pers in all aspects of analytical chem istry and spectroscopy are solicited. Symposia are planned on the fol lowing topics: recent developments in ion selective electrodes and their bio medical applications, molecular spec troscopy, laboratory systems manage ment, computer information handling in clinical laboratories, automatic analysis comes of age, advances in ap plied electron spectroscopy, high-per formance liquid chromatography in petroleum and synthetic oil character ization, the state-of-the-art in surface analysis, keeping up with computer interfacing and microcomputers, new developments in high-resolution gas chromatography, low and subnanosecond events—IR and UV time-re solved, critical evaluation of proce dures for the analysis of nitrogen ox ides, analytical chemistry and OSHA, toxicology—emphasis on regulations of FDA, chemical analysis in the steel industry, 1978 awards symposium, Coblentz Award and symposium, and Fourier transform spectroscopy. Submit three copies of 300-word ab stract, not later than Aug. 29, to Rob ert W. Baudoux, United States Steel Corp., Research Laboratory, M S 57, Monroeville, Pa. 15146.
Meetings The following meetings are newly listed in ANALYTICAL CHEMISTRY. The 1977 meetings listed earlier ap pear in the July issue • 2nd French, American, and Ca nadian International Congress of Clinical & Analytical Toxicolo-
News gy. Aug. 1-5. St. Adele, Quebec, Canada. Contact: Yves Laçasse, AMBT (AACT), Santa Cabrini Hospital, Toxicology Unit, 5655 East St. Zotique, Montreal, P.Q., H171P7, Canada • Third Symposium on Environmental Aspects of Fuel Conversion Technology. Sept. 13-16. Diplomat Hotel, Hollywood, Fla. Sponsored by the U.S. Environmental Protection Agency's Industrial Environmental Research Laboratory/ R T P . Contact: Franklin A. Ayer, Research Triangle Institute, P.O. Box 12194, Research Triangle Park, N.C. 27709. 919-541-6260 m 16th Annual Meeting of ASTM Committee E-19 on the P r a c t i c e of Chromatography. Oct. 2-5. San Francisco. Contact: Gerald Dupre, Bio/dynamics, Inc., Box 43, Mettlers Rd., East Millstone, N.J. 08873 m ISA/77 Conference & Exhibit. Oct. 16-20. International Convention Center, Niagara Falls, N.Y. Contact: Instrument Society of America/77—Niagara Falls, P.O. Box 34093P, Pittsburgh, Pa. 15230 • Advances in Photon-Excited X-ray Fluorescence Analysis. Nov. 27-Dec. 2. San Francisco. Sponsored by the Isotopes and Radiation Div. of the American Nuclear Society (ANS) and held in conjunction with the ANS winter meeting. Contact: Enzo Ricci, Analytical Chemistry Div., Oak Ridge National Laboratory, P.O. Box X, Oak Ridge, Tenn. 37830 • 2nd Annual Toxic Substances Control Conference & Exposition. Dec. 8-9. Shoreham Americana Hotel, Washington, D.C. Contact: Government Institutes, Inc., 4733Bethesda Ave., N.W., Washington, D.C. 20014. 301-657-2922
Short Courses
Given in conjunction with the ACS National Meeting. $245, ACS members; $295, nonmembers Capillary Gas Chromatography Chicago. Aug. 27-28. Milos Novotny and Stuart Cram. Given in conjunction with the ACS National Meeting. $245, ACS members; $295, nonmembers Statistics for Experimental D e s i g n Chicago. Aug. 27-28. J o h n Hromi. Given in conjunction with t h e ACS National Meeting. $195, ACS members; $235, nonmembers Thin-Layer Chromatography Washington, D.C. Sept. 28-29. Victor Rodwell and Donald McNamara. $195, ACS members; $235, nonmembers Chromatographic Maintenance and Troubleshooting Workshop San Francisco. Oct. 1-2. John Walker, Minor Jackson, and M.P.T. Bradley. $195, ACS members; $235, nonmembers Laboratory Safety: Recognition and Management of Hazards Detroit. Nov. 4-6. Norman Steere and Maurice Golden. Given in conjunction with the FACSS Meeting. $255, ACS members; $305, nonmembers Column Selection in Gas Chromatography Detroit. Nov. 10-11. Harold McNair and Walter Supina. Given in conjunction with the FACSS Meeting. $165, ACS members; $205, nonmembers Thermal Methods of Analysis Detroit. Nov. 10-11. Wesley Wendlandt and Ilya Sarasohn. Given in conjunction with the FACSS Meeting. $195, ACS members; $235, nonmembers
ACS Courses. For more information, contact: Department of Educational Activities, American Chemical Society, 1155 16th St., N.W., Washington, D.C. 20036. 202-872-4508
Electroanalytical Chemistry New York City. Nov. 17-19. Dennis Evans and Paul Whitson. $255, ACS members; $305, nonmembers
Electroanalytical Chemistry Chicago. Aug. 26-28. Dennis Evans and Paul Whitson. Given in conjunction with the ACS National Meeting. $255, ACS members; $305, nonmembers
Laboratory Safety: Recognition and Management of Hazards San Francisco. Dec. 7-9. Norman Steere and Maurice Golden. $255, ACS members; $305, nonmembers
High-Pressure Liquid Chromatography Workshop Chicago. Aug. 27-28. David Freeman.
Radioimmunoassay Philadelphia. Aug. 8-20. Jointly sponsored by Philadelphia College of Pharmacy and Science and the Clinical Radioassay Society, Delaware Valley Section. Contact: Office of Continuing Education, Philadelphia College of Pharmacy and Science, 43rd St. and Kingsessing Mall, University City, Philadelphia, Pa. 19104 Chemical Analysis of Petroleum Products Houston, Tex., Aug. 16-18; Edmonton, Alt., Canada, Aug. 30-Sept. 1; Rolling Meadows, 111., Sept. 20-22. $225. Contact: Bill Hart, HewlettPackard Co., Route 41, Avondale, Pa. 19311 Applications of Chromatography in Clinical Laboratory Montreal. Sept. 14-16. $225. Contact: Bill Hart, Hewlett-Packard Co., Route 41, Avondale, Pa. 19311 Gas Chromatography/Mass Spectrometry Chicago. Oct. 6-Nov. 7. Sponsored by the Chicago Section of the Society for Applied Spectroscopy. Contact: Paul Bourassa, UOP, Des Plaines, 111. 60016. 312-391-3380 Modern Techniques in Instrumental Analysis Texas A&M University, College Station, Tex. Oct. 17-21. Sponsored by the Center for Trace Characterization, Dept. of Chemistry, Texas A&M University, College Station, Tex. $275. Contact: Robert Beck Clark, College of Science, Office of the Dean, Texas A&M University, College Station, Tex. 77843 Industrial Hygiene—Recognition, Evaluation, and Control of Occupational Health Hazards Marriott Inn, Pittsburgh, Pa. Nov. 14-16. $165, I H F members; $225, nonmembers. Contact: George Reilly, Industrial Health Foundation, 5231 Centre Ave., Pittsburgh, Pa. 15232. 412-687-2100
For Your Information
Thin-Layer Chromatography San Francisco. Dec. 8-9. Victor Rodwell and Donald McNamara. $195, ACS members; $235, nonmembers
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T h e Environmental Protection Agency (EPA) intends to regulate organic emission from certain chemical processes as identified by the Agency. In response to EPA's willingness in this connection to consider incorporating valid standard methods of the American Society for Testing and Materials (ASTM) into standard com-
