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タイトル: Absolute determination method for trace quantities of enantiomer of glufosinate by γ-cyclodextrin modified capillary zone electrophoresis combined with solid-phase extraction and on-capillary concentration
著者: Asami, Takayuki
Imura, Hisanori link image link image
井村, 久則
発行日: 2006年12月
出版社(者): 日本分析化学会 = Japan Society for Analytical Chemistry
雑誌名: Analytical Sciences
ISSN: 0910-6340
巻: 22
号: 12
開始ページ: 1489
終了ページ: 1493
抄録: A highly sensitive and accurate determination method for trace quantities of enantiomers of glufosinate (D,L-GLUF), a phosphorus-containing amino acid-type herbicide, has been studied. The present method is based on the change in the mole ratio of the enantiomeric isomers after spiking of a known amount of an isomer (L-GLUF). The chiral separation and detection were made by γ-cyclodextrin modified capillary zone electrophoresis (γ-CD-CZE) with fluorescence detection. Solid-phase extraction of D,L-GLUF with titania was investigated as the pre-separation method to eliminate coexisting materials such as inorganic salts and organic compounds in river water. A separated D,L-GLUF was labeled with dansyl chloride and subjected to the on-capillary concentration using large-volume sample stacking (LVSS) before γ-CD-CZE. The detection limit of the present method was as low as 2.0 × 10 -9 M. The present method was successfully applied to a model sample containing 2.0 × 10-7 M D,L-GLUF in river water. It was confirmed that trace quantities of D-and L-GLUF in environmental samples can be accurately determined without any calibration curves and comparison standards. 2006 © The Japan Society for Analytical Chemistry.
DOI: 10.2116/analsci.22.1489
URI: http://hdl.handle.net/2297/14501
関連URI: http://www.jstage.jst.go.jp/article/analsci/22/12/22_1489/_article
http://dx.doi.org/10.2116/analsci.22.1489
資料種別: Journal Article
権利関係: Copyright (c) 2006 by The Japan Society for Analytical Chemistry
版表示: publisher
出現コレクション:1.査読済論文(理)

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