胶束介质中荧光法测定牛奶样品中的维生素A和维生素E
Determination of vitamins A and E in milk samples by fluorescence in micellar media.
作者信息
Ramos-Lledó P, Vera S, San Andrés M P
机构信息
Dpto. Química Analítica, Facultad de Química, Universidad de Alcalá, 28871 Alcalá de Henares, Spain.
出版信息
Fresenius J Anal Chem. 2001 Jan 1;369(1):91-5. doi: 10.1007/s002160000603.
The fat-soluble vitamins A and E in milk samples were determined by fluorescence at room temperature in an aqueous media of micellar solutions. Different types of surfactants were studied; the cationic hexadecyltrimethylammonium bromide (CTAB), the anionic sodium dodecylsulfate (SDS) and the non-ionic polyoxyethylene(23)laurylether (Brij 35). The detection limits ranged between 50 and 90 ng.L-1 for both vitamins in CTAB and Brij 35. The method has been applied to the determination of vitamins A and E in milk samples.
采用荧光法在胶束溶液水介质中于室温下测定牛奶样品中的脂溶性维生素A和E。研究了不同类型的表面活性剂，即阳离子型十六烷基三甲基溴化铵（CTAB）、阴离子型十二烷基硫酸钠（SDS）和非离子型聚氧乙烯（23）月桂醚（Brij 35）。在CTAB和Brij 35中，两种维生素的检测限在50至90 ng.L-1之间。该方法已应用于牛奶样品中维生素A和E的测定。
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