HPLC法测定化妆品中防腐剂劳拉氯铵、苄索氯铵和西他氯铵的含量

Chinese Pharmaceutical Affairs(2012)

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Abstract
目的建立HPLC法测定化妆品中防腐剂劳拉氯铵、苄索氯铵和西他氯铵的含量。方法采用Agi-lent Zorbax CN色谱柱,流动相为甲醇-0.1mol.L-1醋酸铵缓冲溶液(冰醋酸调节pH值至5.0)(75︰25),流速为1.0mL·min-1,检测波长为260nm,柱温为25℃,进样量为20μL。结果劳拉氯铵、苄索氯铵和西他氯铵的检出限分别为0.04μg,0.07μg和0.03μg,线性范围为5.0~100.0μg·mL-1,回收率为94.4%~102.6%。结论本研究建立的HPLC方法稳定可靠、简便易行,可用于化妆品中同时测定防腐剂劳拉氯铵、苄索氯铵和西他氯铵的含量,为《化妆品卫生规范》中补充完善禁限用物质检测方法奠定了基础。
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Key words
HPLC,benzethonium chlorid,benzenemethaminium,preservatives,cosmetics,lauralkonium chloride
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