Forms and pathways of migration and transformation of hazardous chemicals in the environment

• Published in: Russian journal of physical chemistry. B Vol. 11; no. 4; pp. 576 - 586
• Main Authors: Skurlatov, Yu. I., Vichutinskaya, E. V., Zaitseva, N. I., Shtamm, E. V., Shvydkii, V. O., Semenyak, L. V., Baikova, I. S.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.07.2017; Springer Nature B.V
• Subjects: Aquatic environment; Chemical Physics of Ecological Processes; Chemistry; Chemistry and Materials Science; Copper; Hazardous areas; Hydrocarbons; Migration; Organic compounds; Oxidation; Photolysis; Physical Chemistry; Polychlorinated dibenzofurans; Polycyclic aromatic hydrocarbons; Singlet oxygen; Sorbents; Transformations; Trichlorophenols; toxicity; free radicals; polychlorinated organic compounds; singlet oxygen; hydrogen peroxide; reduced sulfur compounds; polyaromatic hydrocarbons; transformation mechanisms; direct and sensitized photolysis; aqueous medium
• ISSN: 1990-7931; 1990-7923
• DOI: 10.1134/S199079311704011X

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 benzo[a]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.