期刊
ENVIRONMENTAL POLLUTION
卷 192, 期 -, 页码 59-64出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2014.05.010
关键词
Titanium dioxide nanoparticles; Phenanthrene; Marine bivalve; Adsorption; Bioaccumulation
资金
- National Science Foundation of China [21107058]
- Tianjin Municipal Science and Technology Commission [13JCYBJC20400]
- China Postdoctoral Science Foundation [2013T60256, 2012M520578]
- Project of Prospering Ocean with Science and Technology of Tianjin Municipality [KJXH2012-23]
- Laboratory Foundation of Tianjin University of Science Technology [1205A303]
- USDA AFRI (MAS) [000978]
To evaluate the impact of titanium dioxide nanoparticles (nTiO(2)) on the uptake of hydrophobic organic chemicals by marine bivalves, we conducted a comparative bioaccumulation study by exposing clam, Scapharca subcrenata, to phenanthrene (Phe) in the presence and absence of nTiO(2). The large surface area of nTiO(2) resulted in adsorption of co-existing Phe in aqueous solution to form nTiO(2)-Phe complexes. Accumulation of nTiO(2) was not observed in clams at exposed concentration (500 mu g/L) in this study. However, enhanced uptake of Phe by clams was observed in the presence of nTiO(2), with k(u) and BAFs values being 2 and 1.7 times higher than that of Phe alone, respectively. The enhanced uptake can be explained by ingestion of nTiO(2)-Phe complexes into the gut and subsequent desorption of Phe there. Therefore, nTiO(2) as a carrier facilitated the uptake of Phe by marine bivalves. (C) 2014 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