A Novel Electrochemical Sensor Based on Nanocomposite Film Electrode for Sensitive Determination of Enviromnental Hormone Bisphenol A

作者：Li, Jun Hua^*; Kuang, Dai Zhi; Feng, Yong Lan; Zhang, Fu Xing; Liu, Meng Qin

来源：Asian Journal of Chemistry, 2013, 25(6): 3147-3153.

DOI：10.14233/ajchem.2013.13560

• Bisphenol-A
• Electrochemical sensor
• Hydroxyapatite
• Titaninum dioxide
• Determination

Bisphenol A (BPA) is an emerging contaminant with servere toxic effect such as disrupting endocrine system or causing cancer, therefore, developing sensitive and selective sensor for bisphenol-A is very important and interesting. Herein, mesoporous hydroxyapatite (meso-HSP) and mesoporous titanium dioxide (meso-TiO2) and multi-walled carbon nanotutes (MWCNT) onto glassy carbon electrode (GCE) surface, Compared with bare electrode and single layer modified electrode, meso-HAP/meso-TiO2/MWCNT modified electrode not only significantly enhanced the oxidation peak current of bisphenol-A, but also lowered the oxidation overpotential, suggesting that the prepared and the kinetic parameters were also investigated. Under the optimized conditions, the oxidation peak current was proportional to bisphenol-A concentration in the range from 8.0 x 10(-9)-40 x 10(-7) M with the correlation coefficient of 0.9979. The detection limit was 1.0 x 10(9) M (S/N = 3). The fabricated electrode showed good reproductibility, stability and antiinterference. The proposed method was successfully applied to determine bisphenol-A in plastic products and the results were statisfactory.

• 出版日期2013-6
• 单位衡阳师范学院