Publication details

Photodegradation of Halobenzenes in Water Ice

Authors

KLÁN Petr DEL FAVERO David ANSORGOVÁ Alena KLÁNOVÁ Jana HOLOUBEK Ivan

Year of publication 2001
Type Article in Periodical
Magazine / Source Environmental Science and Pollution Research
MU Faculty or unit

Faculty of Science

Citation
Web http://www.scientificjournals.com/ESPR/
Field Organic chemistry
Keywords phototransformation; snow; ice; POPs
Description Results from the photolysis of o-, p-dichlorobenzene, bromobenzene, and p-dibromobenzene in water ice are reported. All phototransformations appeared to be based on dehalogenation, coupling, and rearrangement reactions in ice cavities. No photosolvolysis products, i.e. products from intermolecular reactions between organic and water molecules, were found. Many of the products were very toxic substances of a high environmental risk, such as PCBs. The results support our model, in which secondary, very toxic, pollutants can be formed in ice, snow, and atmospheric ice particles from primary pollutants by solar irradiation. The photoproducts may be released to the environment by ice melting and evaporation.
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