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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
資料種別: Journal Article
権利関係: Copyright (c) 2006 by The Japan Society for Analytical Chemistry
版表示: publisher

このアイテムを引用あるいはリンクする場合は次の識別子を使用してください。 http://hdl.handle.net/2297/14501



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