Abstract
To improve the sensitivity of capillary electrophoresis, field-amplified sample injection (FASI) was developed to determine bisphenol A (BPA), α-naphthol (α-NAP) and β-naphthol (β-NAP) in drinks and lake water. Parameters (sample matrix, concentration of NaCl, water plug length, sample injection time and voltage) affecting FASI have been systematically investigated. Under optimum conditions, the sensitivity was improved 17.1-, 15.8- and 9.9-fold for BPA, α-NAP and β-NAP, respectively. The detection limits of BPA, α-NAP and β-NAP were 0.071, 0.038 and 0.081 μg mL−1 and the proposed method has been successfully applied to detect BPA, α-NAP and β-NAP in drinks and lake water with recoveries of 82.0–109.3 %.
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Acknowledgments
This project was financially supported by National Nature Science Foundation of China (No. 20975031), Education Committee of Hubei Province (D20132501), Hubei Key Laboratory of Pollutant Analysis and Reuse Technique (Hubei Normal University) (KL2013M06).
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Peng, X., Wang, H., Yang, B. et al. Field-Amplified Sample Injection-Capillary Electrophoresis for the Determination of Bisphenol A, α-Naphthol and β-Naphthol in Drinks and Lake Water. Chromatographia 79, 327–333 (2016). https://doi.org/10.1007/s10337-016-3028-x
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DOI: https://doi.org/10.1007/s10337-016-3028-x