title: Inclusion of 13C12-labelled mono-, di-, and tri-chlorinated dibenzo-p-dioxin and dibenzofuran standards in US EPA methods 0023A/8290.
abstract: 13C12-Labelled mono-, di-, and tri-chlorinated dibenzo-p-dioxin (CDD) and chlorinated dibenzofuran (CDF) standards have been tested for their applicability to standard EPA sampling and analytical Methods 0023A/8290. These methods target for analysis only the tetra- through octa-CDD/CDF homologues. Extension of the isotope dilution method to include those lower chlorinated homologues is important toward obtaining reliable species concentration data on the complete, mono- to octa-chlorinated homologue profile. These data will improve our ability to model poly-CDD/CDF concentrations through understanding mechanisms of poly-CDD/CDF formation, chlorination, and dechlorination.
authors.affiliation: US Environmental Protection Agency, National Risk Management Research Laboratory, Air Pollution Preventive and Control Division, Research Triangle Park, NC 27711, USA. gullett.brian@epa.gov
authors.forename: B K
authors.initials: BK
authors.lastname: Gullett
authors.forename: J V
authors.initials: JV
authors.lastname: Ryan
authors.forename: D
authors.initials: D
authors.lastname: Tabor
mesh_terms: D000397:Air Pollution / Q000032:analysis*; D001572:Benzofurans / Q000032:analysis*; D002247:Carbon Isotopes / Q000032:analysis; D002623:Chemistry Techniques, Analytical / Q000379:methods; D004147:Dioxins / Q000032:analysis*; D004784:Environmental Monitoring; D012016:Reference Values; D014481:United States; D014484:United States Environmental Protection Agency
chemical_list: D001572:Benzofurans; D002247:Carbon Isotopes; D004147:Dioxins; C023614:dibenzofuran