کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1217453 | 1494193 | 2006 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Sample stacking for the analysis of penicillins by microemulsion electrokinetic capillary chromatography
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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![عکس صفحه اول مقاله: Sample stacking for the analysis of penicillins by microemulsion electrokinetic capillary chromatography Sample stacking for the analysis of penicillins by microemulsion electrokinetic capillary chromatography](/preview/png/1217453.png)
چکیده انگلیسی
We present a method for determining eight penicillin antibiotics using microemulsion electrokinetic chromatography (MEEKC). We studied how the composition of the microemulsion affected separation by modifying such parameters as the surfactant or the addition of organic solvents. The best microemulsion system consisted of 0.5% ethyl acetate, 1.2% 1-butanol, 2% Brij 35, 10% 2-butanol and 86.3% 10 mM borate buffer at pH 10. We studied the suitability of this microemulsion composition for analyzing a commercial drug. To improve the sensitivity of the method, we used the stacking technique reversed electrode polarity stacking mode (REPSM), which increased the detection limits by about 40-fold.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography B - Volume 831, Issues 1–2, 2 February 2006, Pages 196–204
Journal: Journal of Chromatography B - Volume 831, Issues 1–2, 2 February 2006, Pages 196–204
نویسندگان
Patricia Puig, Francesc Borrull, Carme Aguilar, Marta Calull,