期刊
ENVIRONMENTAL POLLUTION
卷 184, 期 -, 页码 131-137出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2013.08.009
关键词
Solid phase microextraction; Black carbon amendment; Activated carbon; Charcoal; Biochar; Polybrominated diphenyl ether
资金
- NIEHS NIH HHS [R01 ES020921] Funding Source: Medline
Polybrominated diphenyl ethers (PBDEs) are widely found in sediments, especially congeners from the penta-BDE formula. Due to their strong affinity for black carbon (BC), bioavailability of PBDEs may be decreased in BC-amended sediments. In this study, we used a matrix-SPME method to measure the freely dissolved concentration (C-free) of PBDEs as a parameter of their potential bioavailability and evaluated the differences among biochar, charcoal, and activated carbon. Activated carbon displayed a substantially greater sequestration capacity than biochar or charcoal. At 1% amendment rate in sediment with low organic carbon (OC) content (0.12%), C-free of six PBDEs was reduced by 47.5-78.0%, 47.3-77.5%, and 94.1-98.3% with biochar, charcoal, and activated carbon, respectively, while the sequestration was more limited in sediment with high OC content (0.87%). Therefore, it is important to consider the type and properties of the BC and the sediment in BC-based remediation or mitigation. (C) 2013 Elsevier Ltd. All rights reserved.
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