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Title: Loadings of atmospheric trace elements and organic contaminants to the Chesapeake Bay

Abstract

To assess the absolute magnitude of atmospheric deposition loadings to the chesapeake Bay, a three-station network of integrated precipitation and air samplers was established in mid-1990 and maintained through September 1993. The objectives of the Chesapeake Bay Atmospheric Deposition Study (CBADS) were to document spatial and temporal variability in atmospheric inventories and wet and dry depositional fluxes of a variety of trace elements (Al, As, CD, Cr, Cu, Fe, Mn, Ni, Pb, Se, and Zn) and organic contaminants (polycyclic aromatic hydrocarbons, PCB congeners) in the chesapeake Bay region. Monthly wet depositional fluxes were calculated as the product of the volume-weighted mean concentration and the monthly precipitation amount, and annual dry deposition fluxes estimated as the product of particle-associated chemical inventories in the atmosphere and a size dependent deposition velocity. Total loadings to the surface waters of the Chesapeake Bay were estimated by spatially integrating fluxes from the three sites. PAH loadings (wet + dry) range from 19 {+-} 4 kg/year (anthracene) to 330 {+-} 86 kg/year (pyrene) and total PCB loadings were 40 {+-} 9 kg/year. Trace element loadings in 1991 ranged from 1,200 {+-} 130 kg/year for cadmium to 41,000 {+-} 14,000 kg/year for zinc. Results from the CBADSmore » study will be compared and contrasted with those from the Great Lakes Integrated Atmospheric Deposition Network.« less

Authors:
;  [1]; ;  [2];  [3];  [4];  [5]
  1. Univ. of Maryland, Solomons, MD (United States). Chesapeake Biological Lab.
  2. Univ. of Delaware, Newark, DE (United States)
  3. Univ. of Maryland, College Park, MD (United States)
  4. Coll. of William and Mary, Gloucester Point, VA (United States)
  5. Old Dominion Univ., Norfolk, VA (United States)
Publication Date:
OSTI Identifier:
85973
Report Number(s):
CONF-9410273-
TRN: IM9534%%44
Resource Type:
Conference
Resource Relation:
Conference: 15. annual meeting of the Society of Environmental Toxicology and Chemistry (SETAC), Denver, CO (United States), 30 Oct - 3 Nov 1994; Other Information: PBD: 1994; Related Information: Is Part Of Society of Environmental Toxicology and Chemistry 15th annual meeting: Abstract book. Ecological risk: Science, policy, law, and perception; PB: 286 p.
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; CHESAPEAKE BAY; WATER POLLUTION; ANTHRACENE; AIR-WATER INTERACTIONS; PYRENE; POLYCHLORINATED BIPHENYLS; METALS; AIR POLLUTION; ENVIRONMENTAL EFFECTS; PRECIPITATION SCAVENGING; ALUMINIUM; ARSENIC; CADMIUM; CHROMIUM; COPPER; IRON; MANGANESE; NICKEL; LEAD; SELENIUM; ZINC; AIR POLLUTION MONITORING

Citation Formats

Baker, J E, Leister, D L, Church, T M, Scudlark, J R, Ondov, J M, Dickhut, R M, and Cutter, G. Loadings of atmospheric trace elements and organic contaminants to the Chesapeake Bay. United States: N. p., 1994. Web.
Baker, J E, Leister, D L, Church, T M, Scudlark, J R, Ondov, J M, Dickhut, R M, & Cutter, G. Loadings of atmospheric trace elements and organic contaminants to the Chesapeake Bay. United States.
Baker, J E, Leister, D L, Church, T M, Scudlark, J R, Ondov, J M, Dickhut, R M, and Cutter, G. 1994. "Loadings of atmospheric trace elements and organic contaminants to the Chesapeake Bay". United States.
@article{osti_85973,
title = {Loadings of atmospheric trace elements and organic contaminants to the Chesapeake Bay},
author = {Baker, J E and Leister, D L and Church, T M and Scudlark, J R and Ondov, J M and Dickhut, R M and Cutter, G},
abstractNote = {To assess the absolute magnitude of atmospheric deposition loadings to the chesapeake Bay, a three-station network of integrated precipitation and air samplers was established in mid-1990 and maintained through September 1993. The objectives of the Chesapeake Bay Atmospheric Deposition Study (CBADS) were to document spatial and temporal variability in atmospheric inventories and wet and dry depositional fluxes of a variety of trace elements (Al, As, CD, Cr, Cu, Fe, Mn, Ni, Pb, Se, and Zn) and organic contaminants (polycyclic aromatic hydrocarbons, PCB congeners) in the chesapeake Bay region. Monthly wet depositional fluxes were calculated as the product of the volume-weighted mean concentration and the monthly precipitation amount, and annual dry deposition fluxes estimated as the product of particle-associated chemical inventories in the atmosphere and a size dependent deposition velocity. Total loadings to the surface waters of the Chesapeake Bay were estimated by spatially integrating fluxes from the three sites. PAH loadings (wet + dry) range from 19 {+-} 4 kg/year (anthracene) to 330 {+-} 86 kg/year (pyrene) and total PCB loadings were 40 {+-} 9 kg/year. Trace element loadings in 1991 ranged from 1,200 {+-} 130 kg/year for cadmium to 41,000 {+-} 14,000 kg/year for zinc. Results from the CBADS study will be compared and contrasted with those from the Great Lakes Integrated Atmospheric Deposition Network.},
doi = {},
url = {https://www.osti.gov/biblio/85973}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Dec 31 00:00:00 EST 1994},
month = {Sat Dec 31 00:00:00 EST 1994}
}

Conference:
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