title: Analytical procedures for the determination of polychlorinated-p-dioxins, polychlorinated dibenzofurans, and hexachlorobenzene in pentachlorophenol.
abstract: A method for the determination of all polychlorinated dibenzo-p-dioxin (PCDDs) and polychlorinated dibenzofurans (PCDFs), and hexachlorobenzene (HCB) contained in production batches of pentachlorophenol (PCP) samples is presented. The method uses two sub-samples of the PCP sample to provide an effective dynamic range of 1:40,000,000. Following extraction of the samples and fractionation of the sample extracts, the extracts are analyzed by HRGC/HRMS, and the resulting data from both sub-samples are combined to generate the final data for each sample. Data from the analysis of 47 samples using this method are presented and show a ratio of concentrations of octachlorinated dibenzofuran (OCDF) to 2,3,7,8-tetrachlorinated dibenzofuran (TCDF) of approximately 4,000,000:1. The results show that four congeners dominate the ITEQ, which has an average value of 634 microg kg(-1) (429 microg kg(-1) WHO 2005 TEQ) in those samples.
authors.affiliation: Analytical Perspectives, 2714 Exchange Drive, Wilmington, NC 28405, USA. yt@ultratrace.com
authors.forename: Yves
authors.initials: Y
authors.lastname: Tondeur
authors.forename: Terry
authors.initials: T
authors.lastname: Nestrick
authors.forename: Héctor A
authors.initials: HA
authors.lastname: Silva
authors.forename: Bryan
authors.initials: B
authors.lastname: Vining
authors.forename: Jerry
authors.initials: J
authors.lastname: Hart
mesh_terms: D001572:Benzofurans / Q000032:analysis* / Q000737:chemistry; D002623:Chemistry Techniques, Analytical / Q000379:methods; D000072338:Dibenzofurans, Polychlorinated; D006581:Hexachlorobenzene / Q000032:analysis* / Q000737:chemistry; D010416:Pentachlorophenol / Q000737:chemistry*; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives* / Q000032:analysis / Q000737:chemistry
chemical_list: D001572:Benzofurans; D000072338:Dibenzofurans, Polychlorinated; D000072317:Polychlorinated Dibenzodioxins; D006581:Hexachlorobenzene; D010416:Pentachlorophenol