气相色谱串联质谱法测定植物油中壬基酚

Determination of nonylphenol in vegetable oil by gas chromatography-tandem mass spectrometry

采用气相色谱—串联质谱（GC-MS/MS）研究植物油中壬基酚的测定方法。乙腈作为提取溶剂,通过涡旋提取和分散基质固相萃取净化。测定结果表明,该方法壬基酚含量在0.02-1 mg/L范围内呈良好线性关系,相关系数为0.999 2,在0.02、0.06和0.2 mg/kg三个水平上做加标回收实验,结果回收率为82.3%-94.7%。方法检出限为0.02 mg/kg。

A method based on gas chromatography -tandem mass spectrometry （GC -MS/MS） was de- veloped for the determination of nonylphenol （NP） in vegetable oil. The oil sample was extracted by o- cean eddies with acetonitrile as solvent and purified by dispersive solid phase extraction. The results showed a good linear relationship when the content of nonylphenol was in the range of 0.02 - 1 mg/L, correlation coefficient was 0. 999 2, The recovery rate on 0.02 mg/kg ,0.06 mg/kg and 0.2 mg/kg were in the rage of 82.3%-94.7%. The limit of detection was 0.02 mg/kg.