Order number 940330-160606-96 -001-001 page 21 set 11 with 111 of 111 items LIMITATION CODE ABSTRACT UNL Atmospheric aerosols collected at Enewetak{ Atoll in the tropical North Pacific were exposed to seawater in laboratory experiments to assess the impact of atmospheric aerosols on lead chemistry in surface seawater. The net atmospheric flux of soluble lead to the ocean is between KEYWORDS EDB Item 29 PRIMARY REPORT NUMBER TITLE ENGLISH SUBTITLE ENGLISH PERSONAL AUTHOR/AFFIL CORPORATE TEXT PUB. DATE (YYMMDD) LIMITATION CODE ABSTRACT 16 and 32 pmol cm{sup {minus}2}/yr at Enewetak. The stable lead isotopic composition of soluble aerosol lead indicates that it is of anthropogenic origin. Anthropogenic aerosol lead from Central and North America appears to be less soluble and/or to dissolve less rapidly than that from Asia. Dissolved organic matter and possibly lower pH appear to increase the nonaluminosilicate aerosol lead solubility and/or dissolution rate. The isotopic composition of lead in air, seawater and dry deposition suggests that after deposition in the ocean, nonaluminosilicate particulate lead can be reinjected into the atmosphere during sea salt aerosol production. AEROSOLS/dissolution ;AEROSOLS/synthesis ; LEAD/environmental transport ;AEROSOLS; DISSOLUTION; SYNTHESIS;AIR;AIR POLLUTION; ALUMINIUM SILICATES; ASIA; BENCH-SCALE EXPERIMENTS ; DEPOSITION; ENIWETOK; LEAD ; LEAD ISOTOPES; ORGANIC MATTER;PACIFIC OCEAN; PARTICULATES; PH VALUE;POLLUTION SOURCES; SALTS; SEAWATER; SOLUBILITY; WATER CHEMISTRY BNL--46439 Whole-body counting in the Marshall Islands 1989--1991 Extended Abstract Sun, L.C.; Clinton, J.; Kaplan, Brookhaven National Lab., 910000 Upton, E.; NY Meinhold, C.B. (United States) UNL In 1978 the Marshall Islands Radiological Safety Program was organized to perform radiation measurements and assess radiation doses for the people of the Bikini, Enewetak, Rongelap and Utirik Atolls. One of the major field components of this program is whole- body counting (WBC). WBC is used to monitor the quantity of gammaemitting radionuclides present in individuals. A primary objective of the program was to establish {gup 137}Cesium body contents among the Enewetak, Rongelap and Utirik populations. {sup 137}Cs was the only gamma-emitting fission radionuclide detected in the l, 967 persons monitored. {sup 137}Cs body burdens tended to increase with age for both sexes, and were higher in males. The average {sup 137}Cs dose Annual Effective 9003459