液相色谱-质谱/质谱法测定乳与乳制品中的三聚氰胺
Chinese Journal of Food Hygiene(2009)
Abstract
目的建立乳与乳制品中三聚氰胺的液相色谱-质谱/质谱(LC-MS/MS)测定方法。方法样品用三氯乙酸溶液和乙腈提取,经阳离子交换固相萃取柱(SPE)净化后,用液相色谱-质谱/质谱法测定和确证,外标法定量。结果在0.01~0.50μg/ml范围内呈线性相关,相关系数为0.999 2,方法测定低限(LOQ)为0.01 mg/kg。在0.01~0.10μg/ml添加浓度范围内,方法回收率为80.4%~107.4%,相对标准偏差(RSD)≤9.4%。结论本方法操作简便,灵敏度、准确度、精密度可满足乳与乳制品中三聚氰胺的检测要求。
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Key words
Milk,Spectrum Analysis,Chromatography,Melamine,Food Analysis,Mass,Liquid
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