Ultrasonic Extraction Coupled with Capillary Electrophoresis for the Determination of Azo Dyes in Lipsticks Using Ionic Liquid as Dynamic Coating and Background Electrolyte

2011 ◽  
Vol 29 (1) ◽  
pp. 147-152 ◽  
Author(s):  
Dan Li ◽  
Ziming Wang ◽  
Lu Wang ◽  
Xu Xu ◽  
Hanqi Zhang
Keyword(s):  
Ionic Liquid ◽  
Capillary Electrophoresis ◽  
Azo Dyes ◽  
Background Electrolyte ◽  
Ultrasonic Extraction ◽  
Dynamic Coating

Polymeric ionic liquid as a dynamic coating additive for separation of basic proteins by capillary electrophoresis

2010 ◽  
Vol 674 (2) ◽  
pp. 243-248 ◽  
Author(s):  
Jing Li ◽  
Haifeng Han ◽  
Qing Wang ◽  
Xia Liu ◽  
Shengxiang Jiang
Keyword(s):  
Ionic Liquid ◽  
Capillary Electrophoresis ◽  
Dynamic Coating ◽  
Polymeric Ionic Liquid ◽  
Basic Proteins

A simple and high-throughput method of ultrasonic extraction-capillary electrophoresis for determination of melamine in milk

2011 ◽  
Vol 3 (11) ◽  
pp. 2557 ◽  
Author(s):  
Yun-Kai Lv ◽  
Yue-Na Sun ◽  
Li-Min Wang ◽  
Cui-Ling Jia ◽  
Han-Wen Sun
Keyword(s):  
Capillary Electrophoresis ◽  
High Throughput ◽  
Ultrasonic Extraction ◽  
High Throughput Method

scholarly journals Optimisation of analytical conditions for simultaneous determination of phenol and chlorophenols by capillary electrophoresis with indirect laser-induced fluorescence detection

2021 ◽  
Vol 63 (11) ◽  
pp. 51-55
Author(s):  
Manh Huy Nguyen ◽  
◽  
Hong Anh Duong ◽  
Hung Viet Pham ◽  
◽  
...  
Keyword(s):  
Capillary Electrophoresis ◽  
Phenolic Compounds ◽  
Simultaneous Determination ◽  
Fluorescence Detection ◽  
Background Electrolyte ◽  
Laser Induced Fluorescence ◽  
Laser Induced Fluorescence Detection ◽  
Electrophoresis Method ◽  
Wastewater Samples

This work presented a capillary electrophoresis method with indirect laser-induced fluorescence detection for the simultaneous determination of phenol and four chlorophenol derivatives. The separation was obtained within 20 minutes with a background electrolyte composed of 5 mM borax and 1 mM fluorescein (pH=9.75), 17 kV of applied voltage, and 120 s of hydrostatic injection. At the optimal conditions, the limit of detections for phenolic compounds was in the range of 0.08-0.23 mg/l, and the RSD data of repeatability and reproducibility were less than 8.0% for both migration times and peak areas. This developed method was applied to analyse concentrations of phenolic compounds in surface water and wastewater samples, with the recoveries ranging from 59.4 to 102.5%.

scholarly journals Enantioseparation and Determination of Mephedrone and Its Metabolites by Capillary Electrophoresis Using Cyclodextrins as Chiral Selectors

Molecules ◽  
2020 ◽  
Vol 25 (12) ◽  
pp. 2879
Author(s):  
Pavel Řezanka ◽  
Denisa Macková ◽  
Radek Jurok ◽  
Michal Himl ◽  
Martin Kuchař
Keyword(s):  
Capillary Electrophoresis ◽  
Chiral Separation ◽  
Simplex Method ◽  
Background Electrolyte ◽  
Detection Limits ◽  
Chiral Selector ◽  
Designer Drug ◽  
Optimal Composition ◽  
Linear Calibration

Mephedrone, a psychoactive compound derived from cathinone, is widely used as a designer drug. The determination of mephedrone and its metabolites is important for understanding its possible use in medicine. In this work, a method of capillary electrophoresis for the chiral separation of mephedrone and its metabolites was developed. Carboxymethylated β-cyclodextrin was selected as the most effective chiral selector from seven tested cyclodextrin derivates. Based on the simplex method, the optimal composition of the background electrolyte was determined: at pH 2.75 and 7.5 mmol·L−1 carboxymethylated β-cyclodextrin the highest total resolution of a mixture of analytes was achieved. For mephedrone and its metabolites, calibration curves were constructed in a calibration range from 0.2 to 5 mmol·L−1; limits of detection, limits of quantification, precision, and repeatability were calculated, and according to Mandel’s fitting test, the linear calibration ranges were determined.

Systematic optimization of a pyromellitic acid background electrolyte for capillary electrophoresis with indirect UV-vis detection and online pre-concentration analysis of thiosalt anions in treated mine tailings

2014 ◽  
Vol 6 (23) ◽  
pp. 9305-9312 ◽  
Author(s):  
Michael Pappoe ◽  
Christina S. Bottaro
Keyword(s):  
Capillary Electrophoresis ◽  
Simultaneous Determination ◽  
Mine Tailings ◽  
Background Electrolyte ◽  
Pyromellitic Acid ◽  
Systematic Optimization

An indirect CZE method was developed for the simultaneous determination of five thiosalt anions: sulfate (SO42−), thiosulfate (S2O32−), trithionate (S3O62−), tetrathionate (S4O62−) and pentathionate (S5O62−).

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