Congener-Specific Composition of Polychlorinated Naphthalenes, Coplanar PCBs, Dibenzo-p-dioxins, and Dibenzofurans in the Halowax Series

摘要: Concentrations and congener compositions of polychlorinated naphthalenes (PCNs), coplanar biphenyls (Co-PCBs), dibenzo-p-dioxins (PCDDs), dibenzofurans (PCDFs) were determined in seven Halowax (HW) preparations. In HW 1000 1031, low-chlorinated (CNs) 1051, highly chlorinated dominant, whereas tri- through penta-CNs major homologues other Halowaxes. Co-PCBs the range 2.0−2600 ng/g. CB 105 118 dominant all PCDDs/DFs 92−5900 The 2,3,7,8-tetrachlorodibenzo-p-dioxin equivalents (TEQs) Halowaxes calculated from amounts PCNs, Co-PCBs, 2800−220 000 ng-TEQ/g. PCNs accounted for most total TEQs Halowaxes, contribution to was less than 1/1000 that PCNs. Congeners significantly contributed CN 69, 73, 70, 63....