Accurate quantification of freely dissolved organochlorine pesticides in water in the presence of dissolved organic matter using triolein-embedded cellulose acetate membrane
文献类型：期刊论文
| 作者 | Ke, Runhui ; Wang, Zijian ; Huang, Shengbiao ; Khan, Shahamat U. |
| 刊名 | ANALYTICAL AND BIOANALYTICAL CHEMISTRY
 |
| 出版日期 | 2007-04 |
| 卷号 | 387期号:8页码:2871-2879 |
| 关键词 | organochlorine pesticides dissolved organic matter humic acid passive sampling freely dissolved concentration |
| 英文摘要 | A novel method is described using triolein-embedded cellulose acetate membrane (TECAM) for accurate determination of the freely dissolved fraction of organochlorine pesticides (OCPs) in waters rich in dissolved organic matter (DOM). The performance of the method was tested with an air-bridge system for extracting OCPs from aqueous solutions with and without humic acid. In addition, the partition coefficients between humic acid and water (K (doc)s) for 20 OCPs were determined by TECAM with negligible depletion extraction. Results show that TECAM predominantly extracts the freely dissolved compounds and its extraction efficiency decreases significantly with an increase in concentration of humic acid in water. The proposed methodology is suitable for facile laboratory K (doc) measurement for moderate to high hydrophobic compounds (log K (ow) > 4). The linear relationship between log K-ow and log K-doc obtained in this study agrees well with the results reported earlier. The kinetic uptake rate constants (k (u)s) and TECAM-water partition coefficients (K(TECAM)s) for the 20 OCPs were obtained using the controlled laboratory continuous-flow and static exposure system, respectively. These calibration parameters were used in the field experiment to estimate the freely dissolved concentrations of OCPs in the water of Taihu Lake in China. Our results show that TECAM can be used successfully to determine the freely dissolved OCPs in aquatic environments containing DOM, and the method is particularly suited for long-term water sampling. |
| WOS记录号 | WOS:000245123600032 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/22532]  |
| 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 | Ke, Runhui,Wang, Zijian,Huang, Shengbiao,et al. Accurate quantification of freely dissolved organochlorine pesticides in water in the presence of dissolved organic matter using triolein-embedded cellulose acetate membrane[J]. ANALYTICAL AND BIOANALYTICAL CHEMISTRY,2007,387(8):2871-2879. |
| APA | Ke, Runhui,Wang, Zijian,Huang, Shengbiao,&Khan, Shahamat U..(2007).Accurate quantification of freely dissolved organochlorine pesticides in water in the presence of dissolved organic matter using triolein-embedded cellulose acetate membrane.ANALYTICAL AND BIOANALYTICAL CHEMISTRY,387(8),2871-2879. |
| MLA | Ke, Runhui,et al."Accurate quantification of freely dissolved organochlorine pesticides in water in the presence of dissolved organic matter using triolein-embedded cellulose acetate membrane".ANALYTICAL AND BIOANALYTICAL CHEMISTRY 387.8(2007):2871-2879. |
入库方式： OAI收割
来源：生态环境研究中心
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