Atmospheric and Tributary Inputs of Toxic Substances to Lake Erie
| Autor: | R.F. Hodanbosi, Paul J. Koval, George M. Sverdrup, Thomas J. Kelly, P.R. Sticksel, Jean M. Czuczwa |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
Hydrology
Cadmium geography geography.geographical_feature_category Volatilisation Ecology chemistry.chemical_element Hexachlorobenzene Aquatic Science Mercury (element) chemistry.chemical_compound Dieldrin Deposition (aerosol physics) chemistry Tributary Environmental science Ecology Evolution Behavior and Systematics Arsenic |
| Zdroj: | Journal of Great Lakes Research. 17:504-516 |
| ISSN: | 0380-1330 |
| DOI: | 10.1016/s0380-1330(91)71386-5 |
| Popis: | This paper reports an evaluation of the input of toxic chemicals to Lake Erie in precipitation, in particle and vapor dry deposition, in the Detroit River, and in other Canadian and U.S. tributaries. Results are shown for 13 toxic chemicals for which all or nearly all of these input pathways could be evaluated. The percentage of direct atmospheric contributions relative to total input to Lake Erie calculated for the 13 species are: PCBs, 26%, PAHs, 21%; benzo-a-pyrene, 66%; hexachlorobenzene, 9%; 2,3,7,8-TCDD, 2%; 2,3,7,8-TCDF, 38%; mercury, 22%; lead, 23%; cadmium, 59%; chromium, 17%; arsenic, 8%; dieldrin, 34%; DDT, 29%. For most species the Detroit River was the major input pathway. Vapor phase fluxes out of the lake are indicated for mercury, and for several organic chemicals. Volatilization of PCBs, DDT, and mercury out of the lake is reduced in winter relative to summer, and the vapor flux of PAHs changes direction from volatilization in summer to deposition in winter. The main conclusion of this study is that atmospheric input to Lake Erie may be a significant contributor of certain toxic chemicals. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|