کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10554343 | 967959 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Separation of thiamin and its phosphate esters by capillary zone electrophoresis and its application to the analysis of water-soluble vitamins
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A capillary zone electrophoresis method for the separation and determination of thiamin and its phosphate esters (free thiamin, thiamin monophosphate, and thiamin pyrophosphate) was developed and optimized. The efficiency achieved with boric acid-sodium tetraborate decahydrate buffer (pH 8.24; 65-8Â mM) at an applied potential of 30Â kV gave the detection limit (S/NÂ =Â 3) and the limit of quantitative measurement (S/NÂ =Â 10) of thiamin and its phosphate esters ranging from 10â4 to 6Â ÃÂ 10â4Â mM and from 6Â ÃÂ 10â4 to 1.2Â ÃÂ 10â3Â mM, respectively. The effects of pH on separation and migration times of thiamin and its phosphate esters are described. The method was validated and applied to the quantitative determination of thiamin in commercial tablets containing both a massive and a normal dose of thiamin.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Pharmaceutical and Biomedical Analysis - Volume 38, Issue 1, 1 June 2005, Pages 66-71
Journal: Journal of Pharmaceutical and Biomedical Analysis - Volume 38, Issue 1, 1 June 2005, Pages 66-71
نویسندگان
Masangu Shabangi, Jeffrey A. Sutton,