FOOD SCIENCE ›› 2010, Vol. 31 ›› Issue (20): 303-306.doi: 10.7506/spkx1002-6630-201020062
• Analysis & Detection • Previous Articles Next Articles
WANG Yu-chun,LIU Zhao-rong,GONG Qiao-juan
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Abstract:
Using large effective area and more catalytic active centers of the functionalized SWCNT modified electrode, we discussed the electrocatalytic activity of bisphenol A (BPA) on the modified electrode. Based on this investigation, an optimized electrochemical method was presented for the determination of this molecule in food packaging materials. The cyclic voltammetry was carried out at 0.10 V/s scanning speed after 100 s of accumulation in pH 6.5 PBS solution at 0.2 V voltage. The anodic peak current (Ipa) had good linear correlation with BPA concentration over the range from 2.0×10-8 to 3.5×10-5 mol/L. The detection limit of BPA was 8.0×10-9 mol/L (RSN = 3). Moreover, the stability, repeatability and interference resistance of the modified electrode were investigated. This was followed by application evaluation of the developed method to the determination of BPA in four food packaging materials. Recoveries of BPA varying from 97.5% to 105% were obtained, indicating the excellence of this method.
Key words: SWCNT modified electrode, cyclic voltammetry, food packaging material, BPA
CLC Number:
O657.12
TS206.4
WANG Yu-chun,LIU Zhao-rong,GONG Qiao-juan. Electrochemical Determination of Bisphenol A in Food Packaging Materials[J]. FOOD SCIENCE, 2010, 31(20): 303-306.
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URL: https://www.spkx.net.cn/EN/10.7506/spkx1002-6630-201020062
https://www.spkx.net.cn/EN/Y2010/V31/I20/303