三重四极杆气相质谱测定花生油中邻苯二甲酸二丁酯迁移残留值的方法研究

Determination of Migration Residual Value of Dibutyl Phthalate in Peanut Oil by Triple Quadrupole Gas Chromatography-Mass Spectrometry

本文建立了三重四极杆气相质谱法测定花生油中邻苯二甲酸二丁酯(Dibutyl Phthalate,DBP)迁移残留值的方法。结果显示,DBP在25~1 000μg·L^(-1)具有良好线性关系,相关系数为0.999 4;方法检出限为0.02μg·kg^(-1),定量限为0.06μg·kg^(-1);加标浓度在20~60μg·kg^(-1)时,回收率为91.72%~103.30%,相对标准偏差为7.565%~9.886%。该方法前处理简单高效,灵敏度高,专一性好,能够满足花生油中DBP迁移残留值的日常检测分析。

This article establishes a detection method for the migration residue of dibutyl phthalate(DBP) in peanut oil using triple quadrupole gas chromatography-mass spectrometry.The results showed that DBP had a good linear relationship between 25~ 1 000 μg·L~(-1),with a correlation coefficient of 0.999 4;the detection limit of the method is 0.02 μg·kg^(-1),and the quantification limit is 0.06 μg·kg^(-1);when the spiked concentration is 20~ 60 μg·kg^(-1),the recovery rate is 91.72%~ 103.30%,and the relative standard deviation is 7.565%~ 9.886%.This method has simple and efficient preprocessing,high sensitivity,and good specificity,which can meet the daily detection and analysis of DBP migration residue values in peanut oil.