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高效液相色谱法测定化妆品中的烟酸和烟酰胺.doc

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文档介绍:高效液相色谱法测定化妆品中的烟酸和烟酰***
高效液相色谱法测定化妆品中的烟酸和烟酰***
高效液相色谱法测定化妆品中的烟酸和烟酰***
高效液相色谱法测定化妆品中的烟酸和烟酰***
毛希琴收稿日期:
作者简介:毛希琴(1972-),女(汉),山东莱州人,高级工程师,电话:(0411)84604460,E-mail:******@。
(大连市产品质量监督检验所,辽宁 大连 116021)
摘要:通过优化样品前处理方法以及液相色谱分离条件,建立了高效液相色谱分离分析化妆品中烟酸和烟酰***的方法。利用水和二***甲烷双液相体系将目标物与化妆品(膏、霜、乳液、洗发水等)中油溶性成分及表面活性剂初步分离。酸性条件下用反相及强阳离子交换混合型固相萃取材料吸附富集目标物,脱除干扰物质后,洗脱,定容,用反相高效液相色谱分离,二极管阵列检测器检测,标准曲线外标法定量。方法平均回收率及相对标准偏差(n=6) μg/g,定量限为300 μg/g。
关键词:化妆品;高效液相色谱法;烟酸;烟酰***
ﻬDetermination of Nicotinic acid and Nicotinamide in cosmetics by high performance liquid chromatography
MAO Xi—qin
(Dalian Institute of Product Quality Supervision & Inspection, Dalian, Liaoning 116021, China)
高效液相色谱法测定化妆品中的烟酸和烟酰***
高效液相色谱法测定化妆品中的烟酸和烟酰***
高效液相色谱法测定化妆品中的烟酸和烟酰***
Abstract: After the optimization of sample preparation methods and liquid chromatography separation conditions, a high—performance liquid chromatography method (HPLC) was developed for the simultaneous determination of nicotinic acid and nicotinamide in cosmetics (cream, lotion, shampoo etc。). A liquid-liquid extraction system composed of water and dichloromethane was used to preliminarily separate target components from other oil-soluble components in cosmetics. After absorbed by a reverse phase solid extraction phase hybrid with strong cation exchange(SCX) under acid conditon while interferring substances can be removed, target components are eluted and analyzed by HPLC with diode array detector. External standard method of standard curve is used in the quantification of target components。 The average spike recoveries of target components and RSD are satisfied。 Limit of detection of the method is 2 μg/g and 6 μg/g for the limit of quantification.
Key words: cosmetic; high performance liquid chromatography; nicotinic acid;nicotinamide
ﻬ烟酸被人体吸收后,在体内转化为烟酰***.烟酸和烟酰***统称为维生素B3。
高效液相色谱法测定化妆品中的烟酸和烟酰***
高效液相色谱法测定化妆品中的烟酸和烟酰***
高效液相色谱法测定化妆品中的烟酸和烟酰***
烟酰***,烟酰***还可以有效地减少或消除皮肤因老化或外界侵害造成的皱纹、起皮、毛孔变大等,使得皮肤