气相色谱-质谱法测定食品中2-(4-甲氧基苯氧基)-丙酸钠  

GC-MS Determination of Sodium 2-(4-Methoxyphenoxy)Propionate in Foods

作　　者：张翠芬[1] 董伟峰[2] 任亮[2] 曹文博[3] 孙兴权[2] 徐天[2] 

机构地区：[1]大连职业技术学院,大连116035 [2]辽宁出入境检验检疫局,大连116001 [3]大连工业大学,大连116034

出　　处：《理化检验（化学分册）》2017年第8期938-941,共4页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：采用气相色谱-质谱法测定食品中2-(4-甲氧基苯氧基)-丙酸钠的含量。食品样品用盐酸(1+1)溶液酸化后经乙酸乙酯提取,在气相色谱分离中用DB-FFAP石英毛细管色谱柱为固定相,在质谱分析中采用选择离子监测模式。2-(4-甲氧基苯氧基)-丙酸的线性范围为5.0~100mg·L^(-1),方法的测定下限(10S/N)为4mg·kg^(-1)。以空白样品为基体进行加标回收试验,所得回收率为79.5%~92.2%,测定值的相对标准偏差(n=6)为3.2%~6.2%。GC-MS was applied to the determination of sodium 2-（4-methoxyphenoxy）propionate in foods.The food sample was extracted with ethyl acetate after acidification of HCl（1＋1）solution.The DB-FFAP quartz capillary chromatographic column was used for GC separation and the selected ion monitoring mode was adopted in MS determination.Linearity range of 2-（4-methoxyphenoxy）propionic acid was found between 5.0 mg·L^（-1） and100mg·L^（-1） with lower limits of determination（10S/N）of 4 mg·kg^（-1）.On the base of blank sample,test for recovery was made by standard addition method;values of recovery found were in the range of 79.5%-92.2%,with RSD′s（n=6）in the range of 3.2%-6.2%.

关 键 词：气相色谱-质谱法 2-(4-甲氧基苯氧基)-丙酸钠 食品 

分 类 号：O657.63[理学—分析化学]