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PCB Contamination in Molluscs of the Hudson River Estuary, NY, USA
Inglese
245 b
30 giorni per il reso
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226.49
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267.70
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A sampling program was developed to determine §whether the PCBs known to have been present in the §operations of the two GE plants located upriver in §the Hudson River Estuary were still detectable §after 20 years. Bivalve molluscs were collected §from 98 Peterson grab samples and subsequently §analyzed for PCBs. In all but one case, the PCBs §detected were found to be Aroclor 1254, that which §is typically considered to be linked to the upsteam §GE contamination. Concentrations were discovered in §excess of both federal USEPA levels and New York §State standards for fish consumption. The §concentrations found in the clams sampled range from §0.056 µg/L to 840 µg/L. Statistical regressions §were performed for the water quality indicators of §salinity, dissolved oxygen, percent oxygen §saturation, pH, and eH, all of which were measured §at the time of sampling. Other variables including §trace metals and latitude were also considered in §the analysis in order to determine any predictive §indicators of high concentrations of PCBs.
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