Accumulation of polychlorinated biphenyls (PCBs) in surficial Lake Superior sediments. Atmospheric deposition

Maximum PCB concentrations in sediment core samples from lake Superior were found in surficial sediments in a location in the prevailing downwind direction of Thunder Bay, Ontario. Depth-fractionated sediments yielded no detectable PCB at depths greater than 3 cm below the sediment/water interface a...

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Veröffentlicht in:	Environmental science & technology 1979-05, Vol.13 (5), p.569-573
Hauptverfasser:	Eisenreich, Steven J, Hollod, Gregory J, Johnson, Thomas C
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Sprache:	eng
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creator	Eisenreich, Steven J Hollod, Gregory J Johnson, Thomas C
description	Maximum PCB concentrations in sediment core samples from lake Superior were found in surficial sediments in a location in the prevailing downwind direction of Thunder Bay, Ontario. Depth-fractionated sediments yielded no detectable PCB at depths greater than 3 cm below the sediment/water interface and they were often not detected below a burial depth of 1 cm. Atmospheric input of PCB is estimated as 3-8x10 6 g per year and their sedimentation rate as 03-04 g/m 2 per year. It is suggested that atmospheric transport and deposition may dominate PCB input into the lake Superior ecosystem.
doi_str_mv	10.1021/es60153a014
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title	Accumulation of polychlorinated biphenyls (PCBs) in surficial Lake Superior sediments. Atmospheric deposition
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