Determination of puerarin in pharmaceutical and biological samples by capillary zone electrophoresis with UV detection

Talanta ◽  
2012 ◽  
Vol 91 ◽  
pp. 83-87 ◽  
Author(s):  
Lizhen Liu ◽  
Feng Feng ◽  
Shaomin Shuang ◽  
Yunfeng Bai ◽  
Martin M.F. Choi
Keyword(s):  
Capillary Zone Electrophoresis ◽  
Biological Samples ◽  
Uv Detection ◽  
Zone Electrophoresis ◽  
Capillary Zone

Separation and Determination of Triclosan and Bisphenol A in Water, Beverage, and Urine Samples by Dispersive Liquid–Liquid Microextraction Combined with Capillary Zone Electrophoresis–UV Detection

2013 ◽  
Vol 96 (2) ◽  
pp. 459-465 ◽  
Author(s):  
Huili Wang ◽  
Aina Zhang ◽  
Wenwei Wang ◽  
Minghua Zhang ◽  
Huanqiang Liu ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Capillary Zone Electrophoresis ◽  
Uv Detection ◽  
Extraction Time ◽  
Urine Samples ◽  
Zone Electrophoresis ◽  
Capillary Zone ◽  
Dispersive Liquid Liquid Microextraction ◽  
Liquid Microextraction

Abstract Dispersive liquid–liquid microextraction combined with capillary zone electrophoresis–UV detection was developed for analyzing triclosan (TCS) and bisphenol A (BPA) in water, beverage, and urine samples. The factors influencing microextraction efficiencies, such as the kind and volume of extraction and dispersive solvent, the extraction time, and the salt effect, were optimized. A background electrolyte composed of 8 mM sodium tetraborate at pH 9.8 was used as the running buffer. Detection was performed at 214 nm. Under the optimum conditions (sample volume, 5.0 mL; extraction solvent, tetrachloroethane, 22.0 μL; dispersive solvent, tetrahydrofuran, 1.0 mL; extraction time, fewer than 5 s; and without salt addition), the enrichment factors were 110.2 and 82.0 for TCS and BPA, respectively. The linear range was 0.02–2 μg/mL with correlation coefficients of 0.9966–0.9969. LODs were in the range of 4.0–8.0 ng/mL. The environmental water, beverage, and urine samples (at spiking levels of 0.1 and 0.4 μg/mL) were successfully analyzed by the proposed method; the recoveries compared to previous methods were in the range of 81.2–103.3%. As a result, this method can be successfully applied for the rapid and convenient determination of TCS and BPA in water, beverage, and urine samples.

Determination of the Fungicide Validamycin A by Capillary Zone Electrophoresis with Indirect UV Detection

2003 ◽  
Vol 51 (26) ◽  
pp. 7523-7527 ◽  
Author(s):  
Jin He ◽  
Shou-Wen Chen ◽  
Li-Fang Ruan ◽  
Li-Li Cao ◽  
Jun Yao ◽  
...  
Keyword(s):  
Capillary Zone Electrophoresis ◽  
Uv Detection ◽  
Indirect Uv Detection ◽  
Validamycin A ◽  
Zone Electrophoresis ◽  
Capillary Zone
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