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《Chinese Journal of Analysis Laboratory》 2013-11
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Simultaneous determination of six parabens in cosmetic products by micellar electrokinetic capillary chromatography

SHEN Juan;ZHANG Hai-yan;CHU Cheng-ding;REN Ling-ling;LIANG Chun-mei;School of Public Health,Anhui Medical University;  
A micellar electrokinetic capillary chromatographic method was established for simple and simultaneous determination of six parabens most often included in cosmetic products, such as methylparaben( MP),ethylparaben( EP),propylparaben( PP),isopropylparaben( iso-PP),butylparaben( BP) and isobutylparaben( iso-BP). Electrophoretic separation was performed on an uncoated capillary( 47. 5 cm ×50 μm i. d,leff = 39. 5cm) at ambient temperature( 15 ± 1℃) with a mixed 15 mmol/L Tris ﹣ H3PO4 buffer( pH 7. 0) containing 10mmol/L dioctyl sodium sulfosuccinate( AOT) and 10%( V/V) acetonitrile. The other optimum experimental conditions were as follows: siphoning injection of 10 s at 10 cm height difference,applied voltage of 20 kV and detection at 255 nm. The curves of peak response versus concentration for six parabens were linear from 1. 0 to 200mg/L with good correlation coefficients( r≥0. 9995). The detection limits of six parabens were found to be 1. 1 ~1. 7 mg/kg based on the signal-to-noise ratio of 2. The recoveries were between 84. 2% and 122. 3%.
【Fund】: 安徽医科大学校科研基金项目(2008kj20)资助
【CateGory Index】: TQ658;O657.7
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【Co-citations】
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