Impact of dissolved humic acid on the bioavailability of acenaphthene and chrysene assessed by membrane-based passive samplers
文献类型：期刊论文
| 作者 | Chen Shan ; Ke RunHui ; Huang ShengBiao ; Sun LiWei ; Zha JinMiao ; Wang ZiJian |
| 刊名 | CHINESE SCIENCE BULLETIN
 |
| 出版日期 | 2007-10 |
| 卷号 | 52期号:19页码:2642-2648 |
| 关键词 | bioavailability polycyclic aromatic hydrocarbons humic acid biomimetic sampling partition coefficient dissolved organic carbon |
| 英文摘要 | Dissolved organic carbon (DOC) is known to reduce the bioavailability of hydrophobic organic compounds (HOCs) in aqueous environments. This reduction occurs as a result of adsorption to DOC, apparently reducing the freely dissolved concentration of HOCs. In the present study, triolein-embedded cellulose acetate membrane (TECAM) and Japanese medaka (Oryzias latipes) were used to measure the uptake of acenaphthene and chrysene in the presence of commercial humic acid (HA) at different concentrations (0-15 mg C center dot L-1) under controlled laboratory conditions. Apparent uptake rate constants for PAHs in TECAM and medaka were compared and DOC-water partition coefficients (K (DOC)s) of two PAHs were calculated with different sampling methods by model fit. Results showed that HA present in water significantly reduced the uptake of PAHs in TECAM and medaka. The obtained values of log K (DOC) of acenaphthene and chrysene measured by TECAM were 4.63 and 5.83, respectively, whereas biologically determined values were 4.52 and 5.76, respectively. These log K (DOC) values were comparable to earlier published K (DOC)s toward commercial HA, thereby indicating that TECAM accumulated only the freely dissolved fraction of chemicals and uptake PAHs in a manner similar to that of fish. All these results suggested that the TECAM method can provide a good means for assessing the impact of DOC on bioavailability of PAHs in the aqueous environment. |
| WOS记录号 | WOS:000249915600010 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/22564]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Chen Shan,Ke RunHui,Huang ShengBiao,et al. Impact of dissolved humic acid on the bioavailability of acenaphthene and chrysene assessed by membrane-based passive samplers[J]. CHINESE SCIENCE BULLETIN,2007,52(19):2642-2648. |
| APA | Chen Shan,Ke RunHui,Huang ShengBiao,Sun LiWei,Zha JinMiao,&Wang ZiJian.(2007).Impact of dissolved humic acid on the bioavailability of acenaphthene and chrysene assessed by membrane-based passive samplers.CHINESE SCIENCE BULLETIN,52(19),2642-2648. |
| MLA | Chen Shan,et al."Impact of dissolved humic acid on the bioavailability of acenaphthene and chrysene assessed by membrane-based passive samplers".CHINESE SCIENCE BULLETIN 52.19(2007):2642-2648. |
入库方式： OAI收割
来源：生态环境研究中心
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