建立了高效液相色谱同时测定化妆品中12种紫外吸收剂含量的方法.样品用甲醇提取,高速离心,过滤,以SB-C8柱(250 mm×4.6 mm.5μm)为分离色谱柱,甲醇和0.1% (v/v)甲酸水溶液为流动相,梯度洗脱,以311nm为检测波长进行定性、定量分析.该方法前处理简单、易操作,12种紫外吸收剂分离效果良好;在1.0~ 500mg/L范围内呈线性关系,相关系数大于0.9995;方法检出限为0.002~0.1 mg/L;实际样品中的加标回收率为97.4% ~ 107.5%,相对标准偏差为1.54%~4.98%.该方法简便、准确,能够满足化妆品中紫外吸收剂的检测要求.
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