Atmospheric Trace Metal Studies
Two programs of trace metal research are being carried out at the Health and Safety Laboratory (HASL). (a) In the surface air program, continuous sampling of the particulates in surface air, has been performed since mid 1967, at about 20 stations extending over almost the entire Wertern Hemisphere. The samples are analyzed for Pb, on a monthly basis. New York City generally has the highest concentration, of these sites, averaging about 2 µg/m3; Miami and San Juan, Puerto Rico are usually within a factor of two of New York. In the Southern Hemisphere, Santiago Chile, often reaches 1 µg/m3 and exhibits a pronounced winter peak in lead concentration.
(b) In the fallout program, V, Cr, Mn, Ni, Cu, Zn and Pb have been analyzed in monthly total and “wet” samples collected in New York City. In general the levels of trace metals at this site approach or exceed any U. S. values reported. The seasonal variations and relationship of wet to total fallout, will be discussed.
KeywordsTrace Metal York City Lead Concentration Ocean Station Washout Ratio
Unable to display preview. Download preview PDF.
- 1.Sr90 and Sr89 in Monthly Deposition at World Land Sites, Hardy, E. P., Jr., Editor, USAEC Report HASL-245, Appendix pg. A-l (October 1971)Google Scholar
- 2.Volchok, H. L. and Kleinman, M. T., Radionuclides and Lead in Surface Air, USAEC Report HASL-245, Appendix pg. C-1 (October 1971).Google Scholar
- 3.Krey, P. W. and Kleinman, M. Ti, Project Airstream, USAEC Report HASL-245, pg. II-8 (October 1971).Google Scholar
- 4.Krey, P. W. and Kleinman, M. T., High Altitude Balloon Sampling Program, USAEC Report, HASL-245, pg. 11–37 (October 1971).Google Scholar
- 5.Bennett, B. G., Sr90 in the Diet, USAEC Report HASL-242, pg. 1–108 (April 1971).Google Scholar
- 7.Kleinman, M. T. and Volchok, H. L., The Quality of Analyses in the HASL Surface Air Sampling Program During 1969, USAEC Report HASL-239 (January 1971).Google Scholar
- 10.Engelmann, R. J., Scavenging Prediction Using Ratios of Concentrations in Air and Precipitation, Proceedings of the 1970 Precipitation Scavenging Conference, Richland, Washington. CONF-700601, Natl. Tech. Info. Service, U. S. Dept. of Commerce, Springfield, Virginia 22151 (1970).Google Scholar