title: Congener specific determination of toxaphene residues in fish liver oil using gas chromatography coupled to ion trap MS/MS.
abstract: A new approach to the determination of six toxaphene congeners in edible stuff has been accomplished. The analytical procedure presented in this paper involves a single-step cleanup process prior to the analysis. A solution containing three (13)C labelled polychlorinated biphenyls was used as internal standard and tetrachloronaphtalene was used as injection standard. The analytical technique used was gas chromatography coupled to ion trap mass spectrometry detector in MS/MS mode. The parameters affecting the successive fragmentations were discussed and optimized. The limits of detection ranged from 2 to 49pg microl(-1). The toxaphene congeners were determined in two different fish liver oil pills sold in Spain as a supplementary vitamin support.
authors.affiliation: Faculty of Environmental Sciences, Department of Analytical Chemistry and Food Technology, University of Castilla-La Mancha. Av. Carlos III, s/n. 45071 Toledo, Spain.
authors.forename: F J Guzmán
authors.initials: FJ
authors.lastname: Bernardo
authors.forename: M A
authors.initials: MA
authors.lastname: Fernández
authors.forename: M J
authors.initials: MJ
authors.lastname: González
mesh_terms: D000818:Animals; D002623:Chemistry Techniques, Analytical / Q000379:methods; D005395:Fish Oils / Q000737:chemistry*; D005506:Food Contamination; D006801:Humans; D007306:Insecticides / Q000032:analysis*; D013058:Mass Spectrometry; D010573:Pesticide Residues / Q000032:analysis*; D014112:Toxaphene / Q000032:analysis*
chemical_list: D005395:Fish Oils; D007306:Insecticides; D010573:Pesticide Residues; D014112:Toxaphene