Journal article
PCBs in Lake Superior, 1978–1992: Decreases in Water Concentrations Reflect Loss by Volatilization
Environmental Science and Technology, Vol.28(5), pp.903-914
1994
DOI: 10.1021/es00054a023
PMID: 22191833
Abstract
Polychlorinated biphenyl (PCB) water concentrations in Lake Superior from 1978 to 1992 have been compiled in order to determine long-term trends. Based on the concentrations of the same 25 PCB congeners from surface water samples collected between 1980 and 1992, ΣPCBs have decreased with a first-order rate constant of 0.20 yr-1. The concentration of ΣPCBs in 1980 based on 82 congeners was ∼2.4 ng/L, by 1992 the concentration had decreased to 0.18 ng/L, indicating a loss of ∼26 500 μg of PCBs from Lake Superior during this 12-yr period. PCB concentrations in dated sediment cores collected in 1986 and 1990 indicate that the sediments have accumulated ∼4900 kg of PCBs since 1930 when PCB production began in the United States.
Details
- Title: Subtitle
- PCBs in Lake Superior, 1978–1992: Decreases in Water Concentrations Reflect Loss by Volatilization
- Creators
- Jeff D JeremiasonKeri C HornbuckleSteven J Eisenreich
- Resource Type
- Journal article
- Publication Details
- Environmental Science and Technology, Vol.28(5), pp.903-914
- DOI
- 10.1021/es00054a023
- PMID
- 22191833
- ISSN
- 1520-5851
- eISSN
- 1520-5851
- Language
- English
- Date published
- 1994
- Academic Unit
- Civil and Environmental Engineering; Occupational and Environmental Health
- Record Identifier
- 9983806265502771
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