Micro-porous membrane liquid-liquid extraction as an enrichment step prior to nonaqueous capillary electrophoresis determination of sulfonylurea herbicides
文献类型：期刊论文
| 作者 | Zhou, QX; Liu, JF; Cai, YQ; Liu, GG; Jiang, GB |
| 刊名 | MICROCHEMICAL JOURNAL
 |
| 出版日期 | 2003 |
| 卷号 | 74期号:2页码:157-163 |
| 关键词 | micro-porous membrane liquid-liquid extraction nonaqueous capillary electrophoresis sulfonylurea herbicides |
| 英文摘要 | A method based on micro-porous membrane liquid-liquid extraction (MMLLE) enrichment and nonaqueous capillary electrophoresis (CE) separation, was established for the analysis of sulfonylurea herbicides in water samples. After MMLLE, the analyte trapped in the chloroform was treated mildly with nitrogen flow to dryness and then dissolved in 200 mul of 4 mM Tris methanol solution for CE analysis. Five sulfonylurea herbicides were separated by nonaqueous CE with Tris/acetate of methanol solution as the run buffer. MMLLE related parameters such as organic solvent used as acceptor, sample flow rate, sample pH, enrichment time, and salt effect were investigated with tribenuron methyl (TBM) as a model compound. Results showed that with a sample flow rate of 3.0 ml min(-1) and an enrichment time of 20 min, the proposed method has good linear relationship over the scope of 1-15 ng ml(-1) with related coefficient of R-2 = 0.9911, and a detection limit of 0.4 ng ml(-1). This method was applied to determine TBM in realworld water samples with recoveries over the range of 89-97%. (C) 2002 Elsevier Science B.V. All rights reserved. |
| 研究领域[WOS] | Chemistry |
| WOS记录号 | WOS:000182874000006 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/23697]  |
| 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 | Zhou, QX,Liu, JF,Cai, YQ,et al. Micro-porous membrane liquid-liquid extraction as an enrichment step prior to nonaqueous capillary electrophoresis determination of sulfonylurea herbicides[J]. MICROCHEMICAL JOURNAL,2003,74(2):157-163. |
| APA | Zhou, QX,Liu, JF,Cai, YQ,Liu, GG,&Jiang, GB.(2003).Micro-porous membrane liquid-liquid extraction as an enrichment step prior to nonaqueous capillary electrophoresis determination of sulfonylurea herbicides.MICROCHEMICAL JOURNAL,74(2),157-163. |
| MLA | Zhou, QX,et al."Micro-porous membrane liquid-liquid extraction as an enrichment step prior to nonaqueous capillary electrophoresis determination of sulfonylurea herbicides".MICROCHEMICAL JOURNAL 74.2(2003):157-163. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。