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