Yurawecz M P
J Assoc Off Anal Chem. 1979 Jan;62(1):36-40.
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%.
采用一种类似于美国公职分析化学师协会（AOAC）测定高水分食品中氯代农药多残留量的方法，在尼亚加拉河的鱼类中检测到了几种未知的卤代化合物。根据气液色谱-质谱联用（GLC/MS）数据以及在3根色谱柱上的GLC保留时间，其中7种化合物被鉴定为4-氯-α,α,α-三氟甲苯（0.17--2.0 ppm）、2-氯-α,α,α-三氟甲苯（0.002--0.1 ppm）、3,4-二氯-α,α,α-三氟甲苯（0.02--0.28 ppm）、2,4-二氯-α,α,α-三氟甲苯（0.02--0.17 ppm）、2,3-二氯-α,α,α-三氟甲苯（痕量-0.005 ppm）、2,6-二氯甲苯（未定量）和2,4,5-三氯甲苯（在唯一一份定量的样品中含量为0.31 ppm）。这些样品中还存在三氯和四氯-α,α,α-三氟甲苯以及二氯、三氯和四氯甲苯的其他异构体。这些样品中鉴定出的特定氯代三氟甲苯的回收率在86%至108%之间。
