建立了化妆品中N-亚硝基二乙醇胺(NDELA)的同位素稀释液相色谱-串联质谱分析方法.水溶性化妆品样品以水为提取溶剂提取,样品提取液经高速离心处理后,上清液过Oasis HLB固相萃取柱净化.脂溶性化妆品样品用二氯甲烷和水混合溶剂进行液-液分配萃取.NDELA经Waters Atlantis T3色谱柱(150 mm×2.1 mm,3 μm)分离后在多反应监测模式下进行串联质谱定性及定量分析,以d8-NDELA为内标定量.NDELA的方法定量限为50 μg/kg;在50~250 μg/kg的3个添加水平范围内的平均回收率为89.1% ~98.2% ,日内精密度均小于9% ,日间精密度均小于11% .该方法能够满足化妆品中NDELA的检测要求.
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