Open AccessPyrolysis products of PCBs.
Author(s) -
Jaakko Paasiv́irta,
Rainer Herzschüh,
Tarmo Humppi,
Erkki Kantolahti,
Juha Knuutinen,
Mirja Lahtiperä,
Risto S. Laitinen,
Juhani Salovaara,
Juhani Tarhanen,
Liisa Virkki
Publication year - 1985
Publication title -
environmental health perspectives
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 2.257
H-Index - 282
eISSN - 1552-9924
pISSN - 0091-6765
DOI - 10.1289/ehp.8560269
Subject(s) - pyrolysis , environmental chemistry , chemistry , polychlorinated dibenzofurans , impurity , environmental science , waste management , organic chemistry , engineering
Model compound studies which were previously done for impurities and environmental residues of chlorophenols and for wastes of chlorination processes were extended to the impurities and pyrolysis products of polychlorinated biphenyls (PCBs). Model compounds were commercial products or synthesized and their structures proven by spectroscopic methods. These models were used as analytical reference substances in GC/ECD and GC/MS studies of the pyrolyzed PCB samples. In addition to previously known neutral components like polychlorinated dibenzofurans (PCDFs), chlorophenolic substances, especially polychlorophenols (PCPs) and polychlorinated biphenylols (PCB-OHs) were observed as major pyrolysis products of PCBs. Capacitor fires are suggested to produce in many cases chlorophenols which are major toxic hazards to people.