Journal
CHROMATOGRAPHIA
Volume 79, Issue 5-6, Pages 327-333Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s10337-016-3028-x
Keywords
Field-amplified sample injection; Capillary electrophoresis; Bisphenol A; alpha-Naphthol; beta-Naphthol; Drinks; Lake water
Funding
- National Nature Science Foundation of China [20975031]
- Education Committee of Hubei Province [D20132501]
- Hubei Key Laboratory of Pollutant Analysis and Reuse Technique (Hubei Normal University) [KL2013M06]
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To improve the sensitivity of capillary electrophoresis, field-amplified sample injection (FASI) was developed to determine bisphenol A (BPA), alpha-naphthol (alpha-NAP) and beta-naphthol (beta-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, alpha-NAP and beta-NAP, respectively. The detection limits of BPA, alpha-NAP and beta-NAP were 0.071, 0.038 and 0.081 mu g mL(-1) and the proposed method has been successfully applied to detect BPA, alpha-NAP and beta-NAP in drinks and lake water with recoveries of 82.0-109.3 %.
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