Environmental Ice Photochemistry: Monochlorophenols

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F03%3A00008002" target="_blank" >RIV/00216224:14310/03:00008002 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Environmental Ice Photochemistry: Monochlorophenols
Original language description
Photolysis of 2- and 4-chlorophenol samples in water ice of the initial 10-4 to 10-2 mol l-1 concentrations is reported. Major phototransformations appeared to be based on the coupling reactions due to chlorophenol aggregation at the grain boundaries ofthe polycrystalline state. The main products, chlorobiphenyldiols, belong to the family of phenolic halogenated compounds (such as hydroxylated polychlorobiphenyls) that are known xenobiotics found in nature. No photosolvolysis products, that is productsfrom intermolecular reactions between organic and water molecules, were observed at temperatures below -10 oC. Raising the temperature to -5 oC caused a moderate photosolvolytic activity in case of 4-chlorophenol (formation of hydroquinone), in contrastto 2-chlorophenol that was almost exclusively transformed into pyrocatechol. It is suggested that photosolvolysis above this temperature occurs in a quasi-liquid layer that covers the ice crystal surfaces. The results support our model i
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CC - Organic chemistry
OECD FORD branch
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Project
<a href="/en/project/GA205%2F02%2F0896" target="_blank" >GA205/02/0896: Photochemistry of persistent organic compounds in/on ice</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2003
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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