Passive extraction and clean-up of phenoxy acid herbicides in samples from a groundwater plume using hollow fiber supported liquid membranes
文献类型：期刊论文
| 作者 | Liu, Jing-Fu ; Toraeng, Lars ; Mayer, Philipp ; Joensson, Jan Ake |
| 刊名 | JOURNAL OF CHROMATOGRAPHY A
 |
| 出版日期 | 2007-08-10 |
| 卷号 | 1160期号:1页码:56-63 |
| 关键词 | hollow fiber supported liquid membrane Complete extraction phenoxy acids polluted groundwater passive sampling |
| 英文摘要 | Hollow fiber supported liquid membranes were applied for the passive extraction of phenoxy acid herbicides from water samples. Polypropylene hollow fiber membranes (240 mu m i.d., 30 mu m wall thickness, 0.05 mu m pore size, 30 cm length) were impregnated with 2.0% tri-n-octylphosphine oxide (TOPO) in di-n-hexyl ether in the pores of the fiber wall to form a liquid membrane. They were then filled with basic solution in the lumen as acceptor and finally placed into the sample (donor). Complete extraction of phenoxy acid herbicides including 2,4-D, MCPA, dichlorprop, and mecoprop from an acidified sample (4 mL, adjusted to pH 1.5 with HCl) into basic acceptor (10 mu L of 0.2 M NaOH) was achieved after 4 h of shaking (100 rpm) resulting in an enrichment factor of 400 times. The acceptor was then neutralized by addition of HCl and injected into a HPLC system for the determination of the phenoxy acid herbicides. Environmentally relevant salinity (0-3.5% NaCl) and dissolved organic matter (0-25 mg/L of dissolved organic carbon) had no significant effect on the extraction. The method provided extraction efficiencies of more than 91%, detection limits of 0.3-0.6 mu g/L, and combined extraction and clean up in one single step. This procedure was applied to deter-mine aqueous concentrations of phenoxy acid herbicides in groundwater samples collected from an old dumping site (Cheminova, Denmark) with detected concentrations up to 5800 mu g/L. Although the samples were very dirty with large amounts of suspended particles, non-aqueous phase liquids (NAPLs) and dissolved organic matters, good spike recoveries (80-126%) were obtained for 10 of the 11 samples. (c) 2007 Elsevier B.V. All rights reserved. |
| WOS记录号 | WOS:000248891400007 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/22488]  |
| 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,Toraeng, Lars,Mayer, Philipp,et al. Passive extraction and clean-up of phenoxy acid herbicides in samples from a groundwater plume using hollow fiber supported liquid membranes[J]. JOURNAL OF CHROMATOGRAPHY A,2007,1160(1):56-63. |
| APA | Liu, Jing-Fu,Toraeng, Lars,Mayer, Philipp,&Joensson, Jan Ake.(2007).Passive extraction and clean-up of phenoxy acid herbicides in samples from a groundwater plume using hollow fiber supported liquid membranes.JOURNAL OF CHROMATOGRAPHY A,1160(1),56-63. |
| MLA | Liu, Jing-Fu,et al."Passive extraction and clean-up of phenoxy acid herbicides in samples from a groundwater plume using hollow fiber supported liquid membranes".JOURNAL OF CHROMATOGRAPHY A 1160.1(2007):56-63. |
入库方式： OAI收割
来源：生态环境研究中心
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