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Trace metals in atmospheric deposition: A review and assessment
Abstract Information on nineteen metals in atmospheric deposition potentially toxic to humans and other organisms was evaluated to conclude if metal concentrations are increasing in atmospheric deposition and if these concentrations threaten human or organism health. On the basis of rates of emission, atmospheric concentrations, and known temporal trends in deposition, Ag, Cd, Cu, Pb, Sb, Se and Zn can be expected to show the greatest increases due to human activity with little or no increases expected for Co, Mn, Ni and Tl. The limited data available supported these expectations. In some cases, dry fallout was found to be significant relative to wet deposition. Of the metals studied only As, Hg, Se and possibly Cd are in the vapor phase in the atmosphere. Relative to the impact of these increased concentrations, Hg and Pb are now being deposited in some areas at levels toxic to humans and Cd, Cu, Hg, Pb and Zn at levels toxic to other organisms.
Trace metals in atmospheric deposition: A review and assessment
Abstract Information on nineteen metals in atmospheric deposition potentially toxic to humans and other organisms was evaluated to conclude if metal concentrations are increasing in atmospheric deposition and if these concentrations threaten human or organism health. On the basis of rates of emission, atmospheric concentrations, and known temporal trends in deposition, Ag, Cd, Cu, Pb, Sb, Se and Zn can be expected to show the greatest increases due to human activity with little or no increases expected for Co, Mn, Ni and Tl. The limited data available supported these expectations. In some cases, dry fallout was found to be significant relative to wet deposition. Of the metals studied only As, Hg, Se and possibly Cd are in the vapor phase in the atmosphere. Relative to the impact of these increased concentrations, Hg and Pb are now being deposited in some areas at levels toxic to humans and Cd, Cu, Hg, Pb and Zn at levels toxic to other organisms.
Trace metals in atmospheric deposition: A review and assessment
Galloway, James N. (author) / Thornton, J.David (author) / Norton, Stephen A. (author) / Volchok, Herbert L. (author) / McLean, Roland A.N. (author)
Atmospheric Environment ; 16 ; 1677-1700
1981-11-18
24 pages
Article (Journal)
Electronic Resource
English
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