کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1211033 | 965458 | 2007 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Study on the kinetics of keto-enol tautomerism of p-hydroxyphenylpyruvic acid using capillary electrophoresis
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Study on the kinetics of keto-enol tautomerism of p-hydroxyphenylpyruvic acid using capillary electrophoresis Study on the kinetics of keto-enol tautomerism of p-hydroxyphenylpyruvic acid using capillary electrophoresis](/preview/png/1211033.png)
چکیده انگلیسی
The kinetics of keto-enol tautomerism of p-hydroxyphenylpyruvic acid (pHPP) as a model of α-carbonyl compounds in aqueous solution at room temperature (25 °C) was first investigated by capillary electrophoresis with UV detection at 200 nm. The two tautomers could be separated and detected within 3 min. Since the ketonization of enolic pHPP varied with the buffer composition and buffer pH, the kinetics of pHPP was studied under different conditions, and relevant distributing fractions of enolic pHPP, ketonization rate constants and half-life were determined. In addition, β-CD played an important part in the separation of the two tautomers, thus, the interaction between pHPP and β-CD was also investigated by electrochemical techniques.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1175, Issue 2, 21 December 2007, Pages 283–288
Journal: Journal of Chromatography A - Volume 1175, Issue 2, 21 December 2007, Pages 283–288
نویسندگان
Lu Huang, Ying Huang, Yuwu Chi, Jinming Lin, Lishuang Yu, Liangjun Xu, Guonan Chen,