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On the de novo synthesis of polychlorinated dibenzo‐ p ‐dioxins and dibenzofurans
Author(s) -
Janssens J. J.,
Schepens P. J. C.
Publication year - 1988
Publication title -
biomedical and environmental mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0887-6134
DOI - 10.1002/bms.1200160132
Subject(s) - polychlorinated dibenzofurans , chemistry , polychlorinated dibenzo p dioxins , gas phase , reaction mechanism , organic chemistry , environmental chemistry , medicinal chemistry , catalysis
Some possible intermediates or by‐products in the synthesis of polychlorodibenzo‐ p ‐dioxins and dibenzofurans in municipal waste incinerators are presented. In stack gas samples from two different incinerators, the following compounds were tentatively identified: polychloromonobenzofurans, polychloromonobenzodioxins, monobromopolychlorobenzenes and polychlorothiophenes. The occurrence of complete series of homologues and **isomers with an increasing degree of chlorination suggests an analogus formation mechanism with common precursors. The presence of these compounds in the vapour phase, the non‐regiospecific character of these reactions and the high reaction temperature and speed confirm a radical mechanism of formation.