title: Gas-liquid chromatographic and mass spectrometric indentification of chlorinated trifluorotoluene residues in Niagara River fish.
abstract: Several unknown halogenated compounds were detected in Niagara River fish using a method similar to the AOAC multiresidue method for chlorinated pesticides in high-moisture foods. From gas-liquid chromatographic-mass spectrometric (GLC/MS) data and GLC retention times on 3 columns, 7 of the compounds were identified as 4-chloro-alpha,alpha,alpha-trifluorotoluene (0.17--2.0 ppm), 2-chloro-alpha,alpha,alpha-trifluorotoluene (0.002--0.1 ppm), 3,4-dichloro-alpha,alpha,alpha-trifluorotoluene (0.02--0.28 ppm), 2,4-dichloro-alpha,alpha-alpha-trifluorotoluene (0.02--0.17) ppm), 2,3-dichloro-alpha,alpha,alpha-trifluorotoluene (trace-0.005 ppm), 2,6-dichlorotoluene (not quantitated), and 2,4,5-trichlorotoluene (0.31 ppm was found in the only sample quantitated). Other isomers of tri- and tetrachloro-alpha,alpha,alpha-trifluorotoluene and di-,tri-, and tetrachlorotoluene were also present in these samples. Recoveries of the specific chlorinated trifluorotoluenes identified in these samples ranged from 86 to 108%.
mesh_terms: D000818:Animals; D002849:Chromatography, Gas; D002853:Chromatography, Liquid; D005399:Fishes; D006846:Hydrocarbons, Halogenated / Q000032:analysis*; D009518:New York; D010573:Pesticide Residues / Q000032:analysis*; D014050:Toluene / Q000031:analogs & derivatives*; D014873:Water Pollutants / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D006846:Hydrocarbons, Halogenated; D010573:Pesticide Residues; D014873:Water Pollutants; D014874:Water Pollutants, Chemical; D014050:Toluene