title: A simple ultraviolet method for discriminating between polychlorobiphenyls and organochloride pesticides coeluting under gas chromatography with electron-capture detection.
abstract: Certain congeners of Aroclor 1260 coelute with o,p'-or p,p'-DDT under gas chromatography with electron-capture detection. We describe a simple ultraviolet irradiation method that allows qualitative and quantitative analyses of mixtures of these organochlorides in complex matrices. Detection limits are 0.20 and 0.22 microgram/kg dry mass for Aroclor 1260 and the two DDTs, respectively. The method is applied to six replicate pork liver samples, for which recoveries ranged from 72 to 90%.
authors.affiliation: Departamento Química Analítica, Nutrición y Bromatología, Facultad de Farmacia, Universidad de Santiago de Compostela, La Coruña, Spain.
authors.forename: S T
authors.initials: ST
authors.lastname: González-Barros
authors.forename: J
authors.initials: J
authors.lastname: Simal Lozano
authors.forename: M A
authors.initials: MA
authors.lastname: Lage Yusty
authors.forename: M E
authors.initials: ME
authors.lastname: Alvarez Piñeiro
mesh_terms: D000818:Animals; D001140:Aroclors / Q000032:analysis; D002138:Calibration; D002849:Chromatography, Gas / Q000379:methods*; D003634:DDT / Q000032:analysis; D007306:Insecticides / Q000032:analysis*; D008099:Liver / Q000737:chemistry*; D009994:Osmolar Concentration; D010573:Pesticide Residues / Q000032:analysis*; D011078:Polychlorinated Biphenyls / Q000032:analysis*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013056:Spectrophotometry, Ultraviolet; D013552:Swine
chemical_list: D001140:Aroclors; D007306:Insecticides; D010573:Pesticide Residues; C026987:aroclor 1260; D003634:DDT; D011078:Polychlorinated Biphenyls