化妆品中7种常见抗生素的超高效液相色谱测定法
Journal of Environment and Health(2009)
Abstract
目的建立祛痘除螨类化妆品中7种常见抗生素(盐酸米诺环素、盐酸土霉素、盐酸四环素、盐酸金霉素、盐酸多西环素、氯霉素及甲硝唑)同时测定的超高效液相色谱法。方法样品中待测物采用甲醇与1%甲酸水溶液等体积混合液超声提取,色谱柱采用Waters UPLC BEH C18,流动相A(甲醇∶乙腈体积比为1∶2)与B(1%甲酸水溶液)梯度洗脱,流量为0.2 ml/min,检测波长为268 nm。结果该方法各组分检出限为0.3~0.5 ng,线性范围为2~100 ng(1~50 mg/L),RSD≤4.8%,加标回收率为82.5%~105.0%。结论该方法快速,灵敏,能够满足检测祛痘除螨类化妆品中7种常见抗生素的需要。
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Key words
ultra performance liquid chromatography,gas,chromatography,antibiotics,cosmetics,liquid chromatography,analytical methods
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