气相色谱-质谱联用分析化妆品中的四种氯代烃

建立了GC-MS联用分析化妆品中四种氯代烃的方法。样品中的四氯化碳、三氯乙烯、1，1，2-三氯乙烷和四氯乙烯经顶空加热提取后，用中等极性毛细管柱（HP-VOC）分离并采用质谱检测器（MS）测定。结果表明四氯化碳的标准曲线为Y＝18221500X-733803，相关系数0．9994，试样3个添加水平下的回收率为71．5％～112．3％，方法检出限为0．31 mg/kg；三氯乙烯的标准曲线为Y＝9633820X-338659，相关系数0．9989，试样3个添加水平下的回收率为73．8％～118．6％，方法检出限为0．83 mg/kg；1，1，2-三氯乙烷的标准曲线为Y＝189350X＋953532，相关系数0．9985，试样3个添加水平下的回收率为81．2％～109．6％，方法检出限为2．5 mg/kg；四氯乙烯的标准曲线为Y＝5738810X-3956440，相关系数0．9979，试样3个添加水平下的回收率为75．5％～111．1％，方法检出限为0．75 mg/kg。

Determination of Four Kinds of Chlorinated Hydrocarbons in Cosmeticsby GC-MS

A method for determination of four kinds of chlorinated hydrocarbons in cosmetics was established. The carbon tet-rachloride,trichlorethylene,1 ,1 ,2-trichloroethane and tetrachlorethylene in cosmetics were extracted by headspace method. Then the extracts were detected by GC-MS. The results showed that the standard curve of carbon tetrachloride was Y =18 221 500X-7 338 030,and the correlation coefficient was 0.9994,the average recovery ranged from 71.5% to 112.3% , the minimum detection limit was 0.31 mg/kg in cosmetics. The standard curve of trichlorethylene wasY= 9 633 820X-338 659,and the correlation coefficient was 0.9989,the average recovery ranged from 73.8% to 118.6% ,the minimum detec-tion limit was 0.83 mg/kg in cosmetics. The standard curve of 1 ,1 ,2-trichloroethane wasY= 1 189 350X＋953 532,and the correlation coefficient was 0.9985,the average recovery ranged from 81.2% to 109.6% ,the minimum detection limit was 2.5 mg/kg in cosmetics. The standard curve of tetrachlorethylene wasY= 5 738 810X-3 956 440,and the correlation coef-ficient was 0.9979,the average recovery ranged from 75.5% to 111.1% . The minimum detection limit was 0.75 mg/kg in cosmetics.