WFRF:(Samuelsson S)
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Capping in situ with activated carbon in Trondheim harbor (Norway) reduces bioaccumulation of PCBs and PAHs in marine sediment fauna
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- Samuelsson, Göran S. (author)
- Stockholms universitet,Institutionen för ekologi, miljö och botanik
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- Hedman, Jenny E. (author)
- Stockholms universitet,Institutionen för ekologi, miljö och botanik
- Krusa, Marie Elmquist (author)
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- Elsevier BV, 2015
- 2015
- English.
- In: Marine Environmental Research. - : Elsevier BV. - 0141-1136 .- 1879-0291. ; 109, s. 103-112
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Three types of thin-layer caps with activated carbon (AC) were tested in situ in experimental plots (10 x 10 m) in Trondheim harbor, Norway, using AC + clay, AC-only or AC + sand. One year after capping, intact sediment cores were collected from the amended plots for ex situ surveys of the capping efficiency in reducing the PAH and PCB aqueous concentrations and bioaccumulation by the polychaete Hediste diversicolor and the clam Abra nitida. Reduced pore water concentrations were observed in all AC treatments. The capping efficiency was in general AC + clay > AC-only > AC + sand. AC + clay reduced bioaccumulation of PAH and PCB congeners between 40% and 87% in the worms and between 67% and 97% in the clams. Sediment capped with AC-only also led to reduced bioaccumulation of PCBs, while AC + sand showed no reduction in bioaccumulation. Thus the best thin-layer capping method in this study was AC mixed with clay.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine (hsv//eng)
Keyword
- Thin-layer capping
- Sediment remediation
- Contaminated sediment
- Bioavailability
- Bioaccumulation
- Hediste (Nereis) diversicolor (Polychaeta) and Aka nitida (Mollusca)
- Contaminant sequestration
- Overlying water
- Pore water
Publication and Content Type
- ref (subject category)
- art (subject category)
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