Inclusion of 13C12-labelled mono-, di-, and tri-chlorinated dibenzo-p-dioxin and dibenzofuran standards in US EPA methods 0023A/8290.
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.
Gullett
B K
BK
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
Ryan
J V
JV
Tabor
D
D
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
D001572:Benzofurans; D002247:Carbon Isotopes; D004147:Dioxins; C023614:dibenzofuran