Photodegradation of Polybromobiphenyls (PBB)

L. Octavio Ruzo; Göran Sundström; Otto Hutzinger; Stephen Safe

doi:10.1021/jf60207a047

Photodegradation of Polybromobiphenyls (PBB)

L. Octavio Ruzo, Göran Sundström, Otto Hutzinger, Stephen Safe

Research output: Contribution to journal › Article › peer-review

31 Scopus citations

Abstract

A series of polybrominated biphenyls (PBB) ranging from 2 to 8 atoms in bromine content was studied in regard to their ultraviolet properties and photochemical reactivity. The compounds containing bromine atoms in positions ortho to the biphenyl linkage were found to have greater ease of debromination in hexane and methanol solutions at wavelengths >290 nm. Debromination at the ortho positions was preferred in all cases. No substitution products were detected in methanol or water-acetonitrile solutions. The sensitizing effect of benzophenone and the slight quenching observed in air-saturated solutions suggest a triplet excited state intermediate.

Original language	English (US)
Pages (from-to)	1062-1065
Number of pages	4
Journal	Journal of Agricultural and Food Chemistry
Volume	24
Issue number	5
DOIs	https://doi.org/10.1021/jf60207a047
State	Published - Sep 1 1976

ASJC Scopus subject areas

General Chemistry
General Agricultural and Biological Sciences

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abstract = "A series of polybrominated biphenyls (PBB) ranging from 2 to 8 atoms in bromine content was studied in regard to their ultraviolet properties and photochemical reactivity. The compounds containing bromine atoms in positions ortho to the biphenyl linkage were found to have greater ease of debromination in hexane and methanol solutions at wavelengths >290 nm. Debromination at the ortho positions was preferred in all cases. No substitution products were detected in methanol or water-acetonitrile solutions. The sensitizing effect of benzophenone and the slight quenching observed in air-saturated solutions suggest a triplet excited state intermediate.",

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AU - Ruzo, L. Octavio

AU - Sundström, Göran

AU - Hutzinger, Otto

AU - Safe, Stephen

PY - 1976/9/1

Y1 - 1976/9/1

N2 - A series of polybrominated biphenyls (PBB) ranging from 2 to 8 atoms in bromine content was studied in regard to their ultraviolet properties and photochemical reactivity. The compounds containing bromine atoms in positions ortho to the biphenyl linkage were found to have greater ease of debromination in hexane and methanol solutions at wavelengths >290 nm. Debromination at the ortho positions was preferred in all cases. No substitution products were detected in methanol or water-acetonitrile solutions. The sensitizing effect of benzophenone and the slight quenching observed in air-saturated solutions suggest a triplet excited state intermediate.

AB - A series of polybrominated biphenyls (PBB) ranging from 2 to 8 atoms in bromine content was studied in regard to their ultraviolet properties and photochemical reactivity. The compounds containing bromine atoms in positions ortho to the biphenyl linkage were found to have greater ease of debromination in hexane and methanol solutions at wavelengths >290 nm. Debromination at the ortho positions was preferred in all cases. No substitution products were detected in methanol or water-acetonitrile solutions. The sensitizing effect of benzophenone and the slight quenching observed in air-saturated solutions suggest a triplet excited state intermediate.

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Photodegradation of Polybromobiphenyls (PBB)

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