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环境化学  2015 

GC-EI-MS同时分析食品中的苏丹Ⅰ和苏丹Ⅱ

Keywords: 番茄沙司,辣椒酱,苏丹Ⅰ,苏丹Ⅱ

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Abstract:

将气相色谱-电子轰击离子源-质谱法(GC-EI-MS)应用于番茄沙司和辣椒酱中苏丹Ⅰ和苏丹Ⅱ添加剂的同时分析,并对两种化合物的EI-MS主要碎片离子的结构与断裂机理进行初步解析.分析方法的线性范围为24-800μg·kg-1,相关系数(R2)均大于0.993,相对标准偏差(RSD)均小于12.7%,样品的加标回收率为77.3%-106%,苏丹Ⅰ的方法检出限(LOQ)为7.8μg·kg-1,苏丹Ⅱ的LOQ为6.8μg·kg-1.

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