气相色谱-质谱法测定白酒中16种塑化剂

Analyzing the 16 Kinds Plasticizer of Liquor by GC-MS

摘要:

建立了气相色谱-电子轰击离子化-质谱法（ GC-EI-MS） 同时分析白酒试样中16 种邻苯二甲酸酯类塑化剂含量的分析方法。通过对白酒试样采用沸水浴蒸发处理、氮吹浓缩处理、加水稀释处理、直接提取4种前处理方法进行处理，最终确定沸水浴蒸发处理-正己烷液液萃取，GC-MS选择离子监测模式（SIM）为最佳分析方法。结果表明，方法检出限为0.05 mg/kg，线性范围为0.3~10 mg/L，相关系数均大于0. 995，样品测定相对标准偏差≤7.2%，加标回收率为85%~120%之间。

Abstract:

An analytical multiresidue method for the simultaneous determination of 16 kinds plasticizer in Liquor by GC-EI-MS was developed. Through the process liquor samples by boiling water bath evaporation，nitrogen blowing concentrated treatment，water treatment，direct extraction of four kinds of pretreatment methods for processing，the best method was found..thai is Used a boiling water bath and n-hexane liquid-liquid exraction to deal with liquor sample，then were determined by using a gas chromatography mass spectrometry operated in electron ionization mode and quant ified in selective ion monitoring mode. The results show that the detection limit of the method was less than 1. 0 kg for the most of pest icides. The developed method was linearover the range assayed，10~ 500 g/L，with correlation coefficients>0.996. the degree of precision was ≤7.2%，the adding standard recovery of the ways established was between 85%-120%.