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Photochemical Degradation of Brominated Dibeno-p-dioxins and -Furans in Organic Solvents.
Chemosphere 22, 821-834 (1991)
The photolytic behavior of halogenated dibenzo-p-dioxins and -furans in the organic solvents methanol and n-hexane was investigated and the corresponding quantum-yields and first order decay rates are reported. The photolysis constants in n-hexane increase with increasing number of bromine atoms in the dibenzo-p-dioxin or dibenzofuran skeleton, e.g. from 4.5×10−4 s−1 for the monobrominated to 7.7×10−3 s−1 for the octabrominated dioxin, and from 4.0×10−3 s−1 for the dibrominated to 8.3×10−2 s−1 for the heptabrominated furan. Photolysis in methanol is nearly six times slower than in n-hexane. The bromine compounds react an order of magnitude faster than the chlorine analogues. The results were used to extrapolate the photochemical fate to lipohilic environmental surfaces.
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Sprache
englisch
Veröffentlichungsjahr
1991
HGF-Berichtsjahr
0
ISSN (print) / ISBN
0045-6535
e-ISSN
1879-1298
Zeitschrift
Chemosphere
Quellenangaben
Band: 22,
Heft: 9-10,
Seiten: 821-834
Verlag
Elsevier
Verlagsort
Kidlington, Oxford
Begutachtungsstatus
Peer reviewed
Institut(e)
Institute of Ecological Chemistry (IOEC)
Erfassungsdatum
1991-12-31