地沟油中辣椒素的检测方法研究

Chinese Journal of Health Laboratory Technology(2014)

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Abstract
目的 建立利用四氮杂杯[2]芳烃[2]三嗪键合硅胶固相萃取-超高效液相色谱-串联质谱(NCS-SPE-UPLC-MS)测定地沟油中辣椒素的方法,用于鉴别地沟油.方法 样品经四氮杂杯[2]芳烃[2]三嗪键合硅胶固相萃取富集后,使用超高效液相色谱分离目标物与基质,并串联三重四级杆质谱进行定量分析.结果 测定辣椒碱、二氢辣椒碱的线性范围均为0.50 ng/ml ~ 50 ng/ml,线性系数分别为0.9985和0.9995,检出限分别为0.10 ng/ml、0.50 ng/ml,加标回收率在71.6% ~116.8%之间,包括前处理在内的整体方法精密度在2.2%~9.8%之间.结论 方法选择性好、快速灵敏、准确可靠,可作为地沟油的有效鉴别手段.
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Key words
Hogwash oil,Capsaicinoids,Tetraazacalix [2] arene [2] triazine modified silica gel,Solid phase extraction,UPLC -MS/MS
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