Oxidation of organophosphorus pesticides with chloroperoxidase enzyme in the presence of an ionic liquid as co-solvent

被引：28
|
作者：
Boskin, Ales [1 ]
Tran, Chieu D. [2 ]
Franko, Mladen [1 ]
机构：
[1] Univ Nova Gorica, Environm Res Lab, Nova Gorica 5001, Slovenia
[2] Marquette Univ, Dept Chem, Milwaukee, WI 53233 USA
来源：
ENVIRONMENTAL CHEMISTRY LETTERS | 2009年 / 7卷 / 03期
关键词：
Chloroperoxidase; Thermal lens spectrometry; Ionic liquid; Pesticide detection; Pesticide oxidation; Acetycholinesterase;
D O I：
10.1007/s10311-008-0161-2
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Effects of selected ionic liquids on the efficiency of CPO oxidation of methyl-parathion were studied. In general, the activity of CPO decreases with the increased concentration of ionic liquid. For ionic liquids with the same cation, those with PF6 (-) exhibit strongest inhibition toward CPO, while those with either BF4 (-) or metSO(4) (-) show relatively lesser inhibition. It was further demonstrated that even for buffer solutions containing up to 30% concentration of ionic liquids such as EAN, BMIMmetSO(4), and EtPyTFA, CPO still can retain high activity (70-100% compared to that in citrate buffer) for oxidation of methyl-parathion. Photothermal enhancement factors of 3.5 times and corresponding improvements of sensitivity in the determination of organophosphates by the FIA-TLS method are predicted in 30% ionic liquids.
引用
收藏
页码：267 / 270
页数：4
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