Equilibrium sampling of freely dissolved alkylphenols into a thin film of 1-octanol supported on a hollow fiber membrane
文献类型：期刊论文
| 作者 | Liu, Jing-Fu; Hu, Xia-Lin; Peng, Jin-Feng; Jonsson, Jan Ake; Mayer, Philipp; Jiang, Gui-bin |
| 刊名 | ANALYTICAL CHEMISTRY
 |
| 出版日期 | 2006 |
| 卷号 | 78期号:24页码:8526-8534 |
| 英文摘要 | A new negligible depletion extraction procedure was proposed for equilibrium sampling of 4-tert-octylphenol (OP) and 4-nonylphenol (NP) into a thin film of 1-octanol supported on a hollow fiber membrane. This thin liquid film extraction technique was directed at the determination of ( 1) freely dissolved concentrations, ( 2) distribution coefficients to 1-octanol (D-ow), and ( 3) binding to dissolved organic matter (D-DOC). The sampling device was prepared by dipping pieces of polypropylene microporous hollow fiber membrane (10-mm length, 30-mu m wall thickness, 240-mu m inner diameter) into 1-octanol for a few seconds to impregnate the pores of the hollow fiber wall. After stirring in 100 mL of sample solution for 24 h, the sampling device was harvested and desorbed with 30 mu L of methanol, of which 20 mu L was injected for HPLC analysis. With the measured Dow of a chemical and its equilibrium concentration in the 1-octanol sampling phase (C-octanol), the freely dissolved concentration (C-free) was calibrated based on C-free = C-octanol/D-ow. Measured log D-ow values of OP (4.32 +/- 0.06) and NP (4.79 +/- 0.02) were independent of the chemical concentration, only minimally affected by the environmentally relevant pH, buffering capacity, and salinity of samples, and agreed well with reported values. Log D-DOC values of OP (4.89 +/- 0.43) and NP (5.14 +/- 0.37), determined in Aldrich humic acid solution, agreed with reported partition coefficients to organic carbon ( log K-oc) for particles in river water and effluent wastewater. Short equilibration times and high enrichment factors were obtained for both analytes due to the high surface to volume ratio of the new sampler. The technique was successfully applied to determine C-free of OP and NP in real water samples and to study their association with humic acids and bovine albumin. |
| WOS记录号 | WOS:000242824900046 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/22877]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Liu, Jing-Fu,Hu, Xia-Lin,Peng, Jin-Feng,et al. Equilibrium sampling of freely dissolved alkylphenols into a thin film of 1-octanol supported on a hollow fiber membrane[J]. ANALYTICAL CHEMISTRY,2006,78(24):8526-8534. |
| APA | Liu, Jing-Fu,Hu, Xia-Lin,Peng, Jin-Feng,Jonsson, Jan Ake,Mayer, Philipp,&Jiang, Gui-bin.(2006).Equilibrium sampling of freely dissolved alkylphenols into a thin film of 1-octanol supported on a hollow fiber membrane.ANALYTICAL CHEMISTRY,78(24),8526-8534. |
| MLA | Liu, Jing-Fu,et al."Equilibrium sampling of freely dissolved alkylphenols into a thin film of 1-octanol supported on a hollow fiber membrane".ANALYTICAL CHEMISTRY 78.24(2006):8526-8534. |
入库方式： OAI收割
来源：生态环境研究中心
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