title: Highly toxic chlorobiphenyl and by-side impurities content and composition of technical chlorofen formulation.
abstract: Non- and mono-ortho CBs as well as also highly toxic by-side impurities such as chlorodibenzofurans, chlorodibenzo-p-dioxins, and chloronaphthalenes after a subsequent 2D-HPLC and HRGC-HRMS separation, detection, and identification were quantified in technical chlorobiphenyl Chlorofen formulation. Chlorofen is highly chlorinated CB mixture and its compositional profile of mono-ortho CBs is occupied by 2,3,3',4,4',5'-HxCB (no. 157) with 96.6% and followed by 2,3,3',4,4',5-HxCB (no. 156) with 3.3% and 2,3',4,4',5,5'-HxCB (no. 167) with <0.1%, while nos. 105, 114, 118, 123, and 189 remained undetected (<10 microg/g). Amongst non-ortho CBs only a trace of 3,3',4,4'-TeCB (no. 77) was found at 15 microg/g, while CBs nos. 81, 126, and 169 were absent. TCDD TEQ for mono- and non-ortho CBs in Chlorofen was 2320 and 1.5 ng/g, respectively, while for CDFs and CNs were 45 and 731 ng/g, respectively, and for both types of contaminants most contributing were OcCDF and OcCN. No tetra- to OcCDD was found in Chlorofen.
authors.affiliation: Department of Environmental Chemistry & Ecotoxicology, University of Gdańsk, Poland. jfalandy@chem.univ.gda.pl
authors.forename: J
authors.initials: J
authors.lastname: Falandysz
authors.forename: S
authors.initials: S
authors.lastname: Taniyasu
authors.forename: M
authors.initials: M
authors.lastname: Flisak
authors.forename: A
authors.initials: A
authors.lastname: Swietojańska
authors.forename: Y
authors.initials: Y
authors.lastname: Horii
authors.forename: N
authors.initials: N
authors.lastname: Hanari
authors.forename: N
authors.initials: N
authors.lastname: Yamashita
mesh_terms: D002617:Chemical Industry; D002851:Chromatography, High Pressure Liquid; D004784:Environmental Monitoring; D004785:Environmental Pollutants / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry; D015386:Hazardous Substances; D011044:Poland; D011078:Polychlorinated Biphenyls / Q000032:analysis* / Q000737:chemistry; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives* / Q000032:analysis* / Q000737:chemistry; D012989:Soil Pollutants / Q000032:analysis*
chemical_list: D004785:Environmental Pollutants; D015386:Hazardous Substances; D000072317:Polychlorinated Dibenzodioxins; D012989:Soil Pollutants; D011078:Polychlorinated Biphenyls