Forms and pathways of migration and transformation of hazardous chemicals in the environment |
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Authors: | Yu I Skurlatov E V Vichutinskaya N I Zaitseva E V Shtamm V O Shvydkii L V Semenyak I S Baikova |
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Institution: | 1.Semenov Institute of Chemical Physics,Russian Academy of Sciences,Moscow,Russia;2.Emanuel Institute of Biochemical Physics,Russian Academy of Sciences,Moscow,Russia;3.Russian Federal Research Institute of Fisheries and Oceanography,Moscow,Russia;4.ZAO “YuNIMET”,Moscow,Russia |
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Abstract: | The forms of existence, pathways of migration, and mechanisms of transformation of polychlorinated organic compounds (POCs) and polyaromatic hydrocarbons (PAHs) in the aqueous medium are analyzed. For 2,4,5-trichlorophenol, as an example, a free-radical mechanism of the formation of polychlorinated dibenzofurans and dibenzodioxins during the direct photolysis of POCs has been established. For benzoa]pyrene, as an example, the role of OH radicals in the oxidation of PAHs sorbed on organomineral sorbents by singlet oxygen has been revealed. The role of monosulfide complexes of Fe(II) and 1: 1 monothiolate complexes of Cu(I) in the formation of a quasi-reducing state of the natural aquatic environment, toxic for aerobic organisms with intensive water exchange, has been elucidated, a state in which copper ions become biologically inaccessible. |
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