Effects of selected metal ions on photodegradation of organophosphorus pesticides sensitized by humic acids.
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.
Kamiya
M
M
Graduate School of Environmental Health Sciences, University of Shizuoka, Shizuoka-shi, Japan. kamiyam@u-shizuoka-ken.ac.jp
Kameyama
K
K
D006812:Humic Substances / Q000737:chemistry; D007306:Insecticides / Q000737:chemistry*; D007477:Ions; D008670:Metals / Q000737:chemistry*; D009943:Organophosphorus Compounds; D010777:Photochemistry; D014874:Water Pollutants, Chemical
D006812:Humic Substances; D007306:Insecticides; D007477:Ions; D008670:Metals; D009943:Organophosphorus Compounds; D014874:Water Pollutants, Chemical