化妆品中尿素含量的测定——利用pH值差异的酶催化方法  

Determination of Urea Content in Cosmetics——Enzymatic Catalysis with Difference in pH

作　　者：崔俭杰[1,2] 李琼[1,2] 林燕 

机构地区：[1]上海应用技术学院,上海200235 [2]上海香料研究所,上海200232

出　　处：《香料香精化妆品》2010年第1期27-30,共4页Flavour Fragrance Cosmetics

摘　　要：应用pH值差异的酶催化方法,测定化妆品中浓度在0.18mg/g～0.48g/g范围内的尿素含量。在该浓度范围内,回收率在98%～109%之间,方法相对标准偏差≤0.87%。该方法简单、快速、成本低、无污染,易应用于基层单位对化妆品中尿素的检测。The method of enzymatic catalysis with difference in pH was used to determine the urea content which between 0.18 mg/g and 0. 48 g/g in cosmetics, the recovery rate was between 98% and 109%, and the RSD was not more than 0. 87%. The method is simple, rapid, low cost, clean, and easily applied by cosmetic units.

关 键 词：尿素酶 酶催化 尿素 pH差异 化妆品 

分 类 号：TQ658[化学工程—精细化工]