Results 141 to 150 of about 2,028 (207)

Capillary Separation: Micellar Electrokinetic Chromatography

Annual Review of Analytical Chemistry, 2009
Micellar electrokinetic chromatography (MEKC), a separation mode of capillary electrophoresis (CE), has enabled the separation of electrically neutral analytes. MEKC can be performed by adding an ionic micelle to the running solution of CE without modifying the instrument.
Shigeru Terabe
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Separation of reduced and oxidized glutathione by micellar electrokinetic capillary chromatography

Biomedical Chromatography, 1993
AbstractThe separation of reduced and oxidized glutathione at an absolute sensitivity of about 100 pg by micellar electrokinetic capillary chromatography without derivatization is described. The time required for the separation is less than 10 min (the time between two following injections is about 15 min).
Castagnola, Massimo, Dipierro, D, Scatena, Roberto, Tavazzi, Barbara, Nocca, Giuseppina, Rossetti, Diana Valeria, Giardina, Bruno   +6 more
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Multivariate optimization in micellar electrokinetic capillary chromatography

Journal of Microcolumn Separations, 2000
The optimization of the organic modifier concentration in micellar electrokinetic capillary chromatography (MECC) has been achieved by a uniform design and iterative optimization method, which has been developed for the optimization of composition of the mobile phase in high performance liquid chromatography.
Ruijiang Lee, Zhen Liu, Hanfa Zou, Jianyi Ni, Yukui Zhang   +4 more
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Pesticide analysis by micellar electrokinetic capillary chromatography

Journal of Chromatography A, 1996
On-capillary sample concentration using sample stacking for the improvement of detection limits for various pesticides separated by micellar electrokinetic capillary chromatography was examined. The dependence of the stacking on different parameters was investigated.
H. Siisse, H. Müller
exaly   +2 more sources

Analysis of Rhubarb by Micellar Electrokinetic Capillary Chromatography

Journal of Natural Products, 1995
A micellar electrokinetic capillary Chromatographic method for the separation and quantitative determination of aloe-emodin, emodin, and rhein in rhubarb samples was established. The running electrolyte was a mixture of 0.025 M 3-(cyclohexylamino)-1-propane sulfonic acid (CAPS) buffer [containing 0.025 M sodium dodecyl sulfate (SDS)] and acetonitrile ...
Zong, Y.Y., Che, C.T.
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Micellar Electrokinetic Capillary Chromatography of Proteins

Analytical Biochemistry, 1993
Separations of model proteins obtained under denaturing conditions in the presence of micellar concentrations of ionic surfactants displayed high resolution and efficiency using either bare silica or C18-derivatized silica capillaries. Superior migration time reproducibility was achieved through the use of the C18-derivatized capillaries (run-to-run ...
M A, Strege, A L, Lagu
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Separation of fungicides by micellar electrokinetic capillary chromatography

ELECTROPHORESIS, 1997
AbstractCapillary electrophoresis with ultraviolet detection (CE/UV) of selected fungicides (carbendazim, metalaxyl, propiconazole, and vinclozolin) using different buffer compositions was investigated. Capillary zone electrophoresis (CZE) with 10 mM sodium phosphate (pH 7.0) was not useful in separating the four fungicides used in this study. However,
K V, Penmetsa, R B, Leidy, D, Shea
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Analysis of prostaglandins by micellar electrokinetic capillary chromatography

Journal of Chromatography A, 1997
This paper presents a rapid and reliable micellar electrokinetic capillary chromatography (MEKC) method to separate major prostaglandins and thromboxane B2. The running buffer was modified with sodium dodecyl sulfate (SDS). The effects of the SDS concentration on the migration behavior of analytes was also examined.
Y Z, Hsieh, K L, Kuo
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Micellar electrokinetic capillary chromatography of psoralen and isopsoralen

Electrophoresis, 1999
In this paper, a micellar electrokinetic capillary chromatography (MEKC) method to analyze the active components of psoralen and isopsoralen in the Chinese herb Psoralea corylifolia L. was developed. It was found that the optimum separation condition for the analysis of these compounds was a buffer solution which contained phosphate, borate and sodium ...
D, Wang, G, Yang, H, Engelhardt, H, Zhang   +3 more
openaire   +2 more sources