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建立了顶空-气相色谱/质谱(HS-GC/MS)法测定溶剂型木器涂料中卤代烃含量的方法。采用HS-GC/MS测定了二氯甲烷、1,1-二氯乙烷、三氯甲烷、1,1,1-三氯乙烷、四氯化碳、1,2-二氯乙烷、1,1,2-三氯乙烷7种化合物,样品经丙酮稀释,外标法定量。结果表明:7种卤代烃含量在0.05~500 mg/L范围内线性关系良好,相关系数(r2)大于0.994,定量限为0.05~0.2 mg/kg。加标回收率64.4%~107.7%,相对标准偏差为4.1%~11%(n=6)。方法已用于溶剂型木器涂料中卤代烃的定性、定量分析。
A method for the determination of halogenated hydrocarbons in solvent-borne wood coatings by headspace-gas chromatography-mass spectrometry (HS-GC / MS) was established. The contents of methylene chloride, 1,1-dichloroethane, trichloromethane, 1,1,1-trichloroethane, carbon tetrachloride, 1,2-dichloroethane, 1,1,2-trichloroethane seven kinds of compounds, the sample diluted with acetone, external standard method. The results showed that the linearity of 7 halohydrocarbons in the range of 0.05-500 mg / L was good, with a correlation coefficient (r2) greater than 0.994 and a limit of quantification of 0.05-0.2 mg / kg. The spiked recoveries ranged from 64.4% to 107.7% with relative standard deviations of 4.1% to 11% (n = 6). The method has been applied to qualitative and quantitative analysis of halogenated hydrocarbons in solventborne wood coatings.