Abstract
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 metSO4 − show relatively lesser inhibition. It was further demonstrated that even for buffer solutions containing up to 30% concentration of ionic liquids such as EAN, BMIMmetSO4, 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.
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This work was supported in part by the NATO collaborative linkage grant No. CBP.EAP.CLG981394.
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Boškin, A., Tran, C.D. & Franko, M. Oxidation of organophosphorus pesticides with chloroperoxidase enzyme in the presence of an ionic liquid as co-solvent. Environ Chem Lett 7, 267–270 (2009). https://doi.org/10.1007/s10311-008-0161-2
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DOI: https://doi.org/10.1007/s10311-008-0161-2