顶空-气相色谱串联质谱法测定修正液中六种苯系物

Determination of Benzoid Compounds in Correction Fluids by Headspace Gas Chromatography-Mass Spectormetry

采用顶空-气相色谱串联质谱法测定修正液中六种苯系物，选用硅油作为基质，通过实验确认顶空平衡温度和平衡时间为：90℃和10min，并进行了色谱条件的优化。该方法简单可靠，准确度高，线性范围为0．1-100mg／kg，最低检测浓度为0．1mg／kg，方法回收率为91．2％-96．4％，相对标准偏差为4-3％～7．9％。该方法可以准确定性、定量测定修正液中的6种苯系物。

Six benzoid compounds in correction fluids were analyzed by headspace gas chromatorgraphy-mass spectrometry. Silicone oil was chosen as the matrix. Equilibrium time and temperature were discussed and selected as 10 min and 90 ;C. Chromatographic conditions were optimized. The linear range, detection limit, recovery rate and relative standard deviation were 0.1-100 mg/kg, 0.1 mg/kg, 91.2 %-96.4 % and 4.3 %-7.9 %. The method was accurate and suitable for the qualitative and quantitative analysis of six benzoid compounds in correction fluid.