Journal
ANALYTICA CHIMICA ACTA
Volume 678, Issue 1, Pages 39-43Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.aca.2010.08.018
Keywords
Capillary electrophoresis; Amperometric detection; Running buffer additive; Food preservative
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Funding
- Research Foundation of the Science and Technology Commission of Shanghai Municipality [09ZR1409700, 08JC1409300]
- National Science Foundation of China [20875032]
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A novel capillary electrophoresis and amperometric detection method was achieved by adding an electroactive additive (3,4-dihydroxybenzylamine, 3,4-DHBA) to the running buffer, so that both electroactive and non-electroactive food preservatives were simultaneously determined. Under the selected optimum conditions, four electroactive preservatives (methylparaben, ethylparaben, propylparaben and butylparaben) and two non-electroactive preservatives (potassium sorbate and sodium lactate) were well separated and sensitively detected with detection limits (S/N=3) ranging from 1.06 x 10(-8) to 2.73 x 10(-6) g mL(-1). This method has been successfully employed for the determination of both electroactive and non-electroactive preservatives in several food commodities. (C) 2010 Elsevier B.V. All rights reserved.
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