食用油中邻苯二甲酸酯类高通量检测方法的研究

摘要

建立固相萃取净化-气相色谱-质谱分析食用油中16种邻苯二甲酸酯的方法.样品用正己烷溶解,过SPE净化柱,采用气相色谱-质谱在选择离子检测(SIM)模式下进行定性、定量分析.结果表明:16种邻苯二甲酸酯在10～10000 μg/L范围内线性关系良好,平均加标回收率为70.0％～110.1％,相对标准偏差为2.68％～11.83％,检出限为10～15 μg/L.%A method for detecting 16 kinds of phthalates simultaneously in edible oils by SPE and gas chromatography - mass spectrometry( GC - MS) was established. Samples were diluted by n - hexane and cleaned up with SPE column. The phthalates were determined qualitatively and quantitatively by GC - MS in selected ion monitoring (SIM) mode. The results showed that the linear range of 16 kinds of phthalates was 10 -10 000 μg/L,the recovery rates were in the range of 70.0% -110. 1% with relative standard deviations being 2.68% -11. 83% ,the detection limits were 10 - 15 μg/L.