Results 71 to 80 of about 2,028 (207)

Effects of organic modifiers on solute retention and electrokinetic migrations in micellar electrokinetic capillary chromatography

, 1999
Influences of seven organic modifiers, including urea, methanol (MeOH), dioxane (DIO), tetrahydrofuran (THF), acetonitrile (ACN), 1-propanol (1-PrOH) and 2-propanol (2-PrOH), on the solute retention and the electrokinetic migrations in micellar ...
Zou, HF, Liu, Z, Ni, JY, Zhang, YK, Ye, ML   +4 more
core  

Desenvolvimento de método rápido para análise simultânea de metil, etil, propil e butilparabeno em amostras cosméticas e farmacêuticas e estudos de interação com macromoléculas biológicas utilizando eletroforese capilar [PDF]

, 2012
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-Graduação em QuímicaOs p-hidroxibenzoatos de alquila, ou parabenos, fazem parte de uma classe de compostos com atividade ...
Dolzan, Maressa Danielli
core  

Analysis, characterization and separation of 2,6-diaminopimelic acid derivatives by capillary zone electrophoresis and micellar electrokinetic chromatography [PDF]

, 2010
In this work, capillary zone electrophoresis (CZE) and micellar electrokinetic chromatography (MEKC) with UV-photometric detection were used for the determination of degree of chemical purity, limit of detection (LOD) and limit of quantitation (LOQ) of N-
Vítovcová, Miloslava
core  

Determination of caffeine by micellar electrokinetic chromatography in different beverages

Acta Marisiensis - Seria Medica
A fast, simple and cost-effective capillary electrophoresis (CE) method was developed for caffeine determination in different beverages (energy drinks, soft drinks).
Uilăcan Alexandra, Stroia Denisa Gabriela, Hancu Gabriel   +2 more
doaj   +1 more source

Amine Analysis Using AlexaFluor 488 Succinimidyl Ester and Capillary Electrophoresis with Laser-Induced Fluorescence

Journal of Analytical Methods in Chemistry, 2015
Fluorescent probes enable detection of otherwise nonfluorescent species via highly sensitive laser-induced fluorescence. Organic amines are predominantly nonfluorescent and are of analytical interest in agricultural and food science, biomedical ...
Christian G. Kendall, Amanda M. Stockton, Stephen Leicht, Heather McCaig, Shirley Chung, Valerie Scott, Fang Zhong, Ying Lin   +7 more
doaj   +1 more source

Capillary liquid chromatography using laser-based and mass spectrometric detection. [Capillary zone electrophoresis (CZE); micellar electrokinetic capillary kchromatography (MECC)]

, 1992
In the years following the 1986 seminal paper (J. Chromatogr. Sci., 24, 347-352) describing modern capillary zone electrophoresis (CZE), the prominence of capillary electrokinetic separation techniques has grown.
Sepaniak, M.J., Cook, K.D.
core   +1 more source

Determination of vitamins K1 and K3 in green tea and in pharmaceutical supplements by capillary micellar electrokinetic chromatography

Food Chemistry Advances
A method based on capillary micellar electrokinetic chromatography (MEKC) was developed for vitamin K1 and K3 determination. Experimental and instrumental parameters optimized for electrophoretic separation with better peak efficiency were: borate buffer
Tatiane V.D. Gomes, Rosana C. Macedo, Anastácia S. Canto, Elisabeth C. Monteiro, Alessandra Licursi M.C. da Cunha, Ricardo Q. Aucélio   +5 more
doaj   +1 more source

Optimization of a Pre-MEKC Separation SPE Procedure for Steroid Molecules in Human Urine Samples

Molecules, 2013
Many steroid hormones can be considered as potential biomarkers and their determination in body fluids can create opportunities for the rapid diagnosis of many diseases and disorders of the human body.
Ilona Olędzka, Piotr Kowalski, Szymon Dziomba, Piotr Szmudanowski, Tomasz Bączek   +4 more
doaj   +1 more source

Peak identification in micellar electrokinetic capillary chromatography

, 2002
Relative mobility was taken as a tool to investigate the peak identification in micellar electrokinetic capillary chromatography (MEKC). The precision (average RSD) of relative mobility was 1.5%, which was, much better than the peak identification with ...
Zheng, YF, Xiong, JH, Zhang, C, Liu, DY, Zhang, PD, Xu, GW   +5 more
core  

Fast determination of active ingredients in compound antipyretic analgesic tablets by micellar electrokinetic capillary chromatography(复方解热镇痛药的毛细管胶束电动色谱快速分析)

Zhejiang Daxue xuebao. Lixue ban, 2001
研究了用毛细管胶束电动色谱快速测定解热镇痛药复方阿司匹林(APC)中阿司匹林(AS)、非那西丁(PH)、咖啡因(CA)及复方扑热息痛(PAC)中扑热息痛(PA)，AS，CA含量的方法.使用长37 cm（有效长度30 cm）内径75 µm的石英毛细管，+ 20kV分离电压，在pH 8.65的9 mmol · L-1 Na2B4O7-13 mmol • L-1 KH2PO4 （内含60 mmol · L-1 SDS和2%乙醇）缓冲溶液中，同一制剂中的三组分可在4.5 min内完全分离.用紫外检测器在214 ...
CAIZeng-xuan(蔡增轩), CHENHeng-wu(陈恒武)   +1 more
doaj   +1 more source