Effects of selected metal ions on photodegradation of organophosphorus pesticides sensitized by humic acids |
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Authors: | Kamiya M Kameyama K |
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Institution: | Graduate School of Environmental Health Sciences, University of Shizuoka, Shizuoka-shi, Japan. kamiyam@u-shizuoka-ken.ac.jp |
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Abstract: | Selected metal ions having paramagnetic property were found to exert inhibition effects on aquatic photodegradation of organophosphorus pesticides sensitized by humic acids, according to the increasing order of Cr(III) < Co(II) < Mn(II) < Cu(II). Basic factors dominating the metal-ion effects were clarified on the basis of the fluorescence quenching as well as radical scavenging abilities of metal ions complexed with humic acids. |
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