- 作者: 張玉珍,魏妙宜
- 作者服務機構: Department of Applied Chemistry, Chaoyang University of Technology, Wufeng, Taichung County, Taiwan 413, R.O.C. and Department of Chemistry, Tunghai University, Taichung, Taiwan 407, R.O.C.
- 中文摘要: A capillary electrophoresis (CE) with UV absorption detection method is described for the simultaneous determination of glufosinate, glyphosate, and aminomethylphosphoric acid. The 9-fluorenylmethyl chloroformate (FMOC-Cl) was used for precolumn derivatization of the non-absorbing herbicides. The three analytes were separated by CE in 9 min with 25 mM borate buffer at pH 9, followed by detection with a UV detector at 260 nm. We demonstrate how the detection limit can be enhanced by using acetonitrile-salt mixtures. With acetonitrile-salt mixtures, the limit of detection (LOD) was in the 10-7 M range. Linearity of more than two orders of magnitude was generally obtained. Precisions of migration times and peak areas were less than 0.9% and 7.5%, respectively. The applicabilities of the method for the analysis of ground water and lake water were examined.
- 英文摘要: --
- 中文關鍵字: Capillary electrophoresis; Acetonitrile-salt mixture; Herbicides; Glyphosate; Glufosinate; Aminomethylphosphonic acid.
- 英文關鍵字: --