title: Capillary gas chromatography combined with atomic emission detection for the analysis of DDT and metabolites.
abstract: Capillary gas chromatography with atomic emission detection (GC-AED) was evaluated for the determination of DDT and metabolites in biological samples. Utilizing chlorine-selective detection at 479 nm, DDT, DDE, and DDD were quantified down to the 20 ng/g (fat weight) level (S/N = 10) in cod liver oil, while the detection, limit was 6 ng/g (S/N = 3). With splitless injection performed in the pressure programmed mode, DDT and related compounds were quantified based on a single chlorine calibration curve (universal calibration). The quantitative data obtained by GC-AED were in excellent accordance with similar results from capillary gas chromatography with electron capture detection (GC-ECD), while the procedure for calibration was simplified with the former technique.
authors.affiliation: Norwegian Institute for Water Research, Oslo, Norway.
authors.forename: S I
authors.initials: SI
authors.lastname: Semb
authors.forename: E M
authors.initials: EM
authors.lastname: Brevik
authors.forename: S
authors.initials: S
authors.lastname: Pedersen-Bjergaard
mesh_terms: D002849:Chromatography, Gas / Q000379:methods; D002850:Chromatography, Gel; D003060:Cod Liver Oil / Q000032:analysis*; D003634:DDT / Q000032:analysis* / Q000378:metabolism; D003633:Dichlorodiphenyl Dichloroethylene / Q000032:analysis*; D003632:Dichlorodiphenyldichloroethane / Q000032:analysis*; D004784:Environmental Monitoring; D007306:Insecticides / Q000032:analysis*; D010573:Pesticide Residues / Q000032:analysis; D015203:Reproducibility of Results
chemical_list: D007306:Insecticides; D010573:Pesticide Residues; D003633:Dichlorodiphenyl Dichloroethylene; D003060:Cod Liver Oil; D003634:DDT; D003632:Dichlorodiphenyldichloroethane