白酒样品经正己烷提取,采用气相色谱-质谱(GC-MS)在选择离子检测模式(SIM)下测定,内标法定量。添加水平分别为0.05、0.15、0.25 mg/L时,白酒中16种邻苯二甲酸酯的回收率为80.6%~117.7%,相对标准偏差RSD为0.8%~14.4%。该方法在0.05~2.00 mg/L范围内线性关系良好,相关系数大于0.999,方法的定量限为0.05 mg/L。

An analytical method to determine 16 phthalates in Chinese spirits was presented.Hexane was used as extractant.The extracts were analyzed by GC-MS coupled with Isotope Dilution Method in SIM mode.Using Chinese spirits samples as blank matrix,the spiked recoveries at levels of 0.05,0.15 and 0.25 mg /L were in the range of80.6% ~ 117.74%.The relative standard deviations(RSDs) were in the range of 0.78% ~ 14.40%.The experimental results showed that the linear ranges for 16 PAEs were 0.05 ~ 2.0 mg /L,the correlation coefficients were higher than 0.999,the limit of quantitation(LOQ) of the 16 PAEs were 0.05 mg /L.The method meets the demand of routine analysis.