Analytical procedures for the determination of polychlorinated-p-dioxins, polychlorinated dibenzofurans, and hexachlorobenzene in pentachlorophenol.
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.
Tondeur
Yves
Y
Analytical Perspectives, 2714 Exchange Drive, Wilmington, NC 28405, USA. yt@ultratrace.com
Nestrick
Terry
T
Silva
Héctor A
HA
Vining
Bryan
B
Hart
Jerry
J
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
D001572:Benzofurans; D000072338:Dibenzofurans, Polychlorinated; D000072317:Polychlorinated Dibenzodioxins; D006581:Hexachlorobenzene; D010416:Pentachlorophenol