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采用带有电子捕获检测器的气相色谱仪测定工业废气中的１，１，１－三氯乙烷。研究了色谱分析条件，测定了方法的精密度和准确度。进样量为２０μＬ时，１，１，１－三氯乙烷的最低检出浓度为０．４６ｍｇ／ｍ３，线性范围为１．５４～１１８ｍｇ／ｍ３，相对标准偏差为１．６％～６．８％，加标回收率为９６％～１０６％。在选定条件下，１，１，１－三氯乙烷、四氯化碳、三氯甲烷、二氯甲烷、三氯乙烯、四氯乙烯、一氯二溴甲烷、三溴甲烷等挥发性卤代烃能得到很好的分离，互不干扰。
Determination of 1,1,1-trichloroethane in industrial exhaust gas by gas chromatography with electron capture detector. The chromatographic conditions were studied and the precision and accuracy of the method were determined. The minimum detectable concentration of 1,1,1-trichloroethane was 0.46mg / m3 with a linear range of 1.54-118mg / m3 with a relative standard deviation of 1.6% -6 .8%, the standard recovery was 96% ~ 106%. Under the selected conditions, 1,1,1-trichloroethane, carbon tetrachloride, chloroform, methylene chloride, trichlorethylene, tetrachlorethylene, chlorinated dibromomethane, brominated volatile brominated Hydrocarbons can be well separated without disturbing each other.