期刊
ENVIRONMENTAL POLLUTION
卷 179, 期 -, 页码 45-52出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2013.04.002
关键词
PFASs; Bioaccumulation; Uptake; Elimination; Earthworm
资金
- Chinese Natural Science Foundation [21277077, 21077060]
- Ministry of Environmental Protection [201009026]
- Ministry of Science and Technology [2012ZX07529-003]
- Tianjin Municipal Science and Technology Commission [10SYSYJC27200]
- Fundamental Research Funds for the Central Universities
Earthworms were exposed to artificially contaminated soils with ten perfluoroalkyl substances (PFASs). PFASs with longer perfluorinated carbon chain displayed higher uptake rate coefficients (k(u)), longer half-life (t(1/2)) and time to steady-state (t(ss)) but lower elimination rate coefficients (k(e)) than the shorter ones. Similarly, perfluorosulfonates acids (PFSAs) displayed higher k(u), longer t(1/2) and t(ss) but lower k(e) than perflurocarboxylic acids (PFCAs) with the same perfluorinated chain length. All the studied PFASs, including those with seven or less perfluorinated carbons, were bioaccumulated in the earthworms and the biota-to-soil accumulation factors (BSAFs) increased with perfluorinated carbon chain length and were greater for PFSAs than for PFCAs of equal perfluoroalkyl chain length. The BSAFs were found to be dependent on the concentrations of PFASs in soil and decreased as the level of PFASs in soil increased. (C) 2013 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据