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Evidence of deposition of anthropogenic pollutants in remote rocky mountain lakes usa


, : Evidence of deposition of anthropogenic pollutants in remote rocky mountain lakes usa. Water Air & Soil Pollution 22(4): 403-416

Thirteen trace elements, the PAH [polycyclic aromatic hydrocarbon] flouranthene and PCB [polychlorinated biphenyls] were measured in the sediments of 4 remote high altitude lakes in Rocky Mountain National Park. PCB were found in the sediments of all 4 lakes providing substantial evidence of anthropogenic inputs, most likely through atmospheric transport. The results were less certain, but still suggestive as to the anthropogenic origins for the elements As, Cd, Pb and Sb and the PAH fluoranthene. Several elements, and fluoranthene and the PCB, were elevated in surface sediments compared to samples taken at greater depths, inferring that loadings of these substances into Rocky Mountain National Park region had increased with time.

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