Sensitivity and selectivity determination of BPA in real water samples using PAMAM dendrimer and CoTe quantum dots modified glassy carbon electrode.
Sensitivity and selectivity determination of BPA in real water samples using PAMAM dendrimer and CoTe quantum dots modified glassy carbon electrode.
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DOI：
10.1016/j.jhazmat.2009.09.041
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发表时间：
2010-02
影响因子：
13.6
通讯作者：
Huanshun Yin;Yunlei Zhou;S. Ai;Quanpeng Chen;Xiangbin Zhu;Xianggang Liu;L. Zhu
中科院分区：
文献类型：
--
作者：
Huanshun Yin;Yunlei Zhou;S. Ai;Quanpeng Chen;Xiangbin Zhu;Xianggang Liu;L. Zhu
双酚A（BPA）是一种干扰内分泌系统或致癌的环境污染物，因此对BPA的检测非常重要。在此，将CoTe量子点（CoTe QDs）和PAMAM树枝状大分子（PAMAM）固定在玻碳电极（GCE）表面，制备了电流型传感器。在0.1M pH 8.0的PBS溶液中，BPA在传感器上的循环伏安图在0.490V处有一个明显的阳极峰。对测定条件进行了优化，并计算了动力学参数。线性范围为1.3×10− 8 ~ 9.89×10− 6 M，相关系数为0.9999。检测限估计为1×10− 9 M。电流在约5s内达到稳态电流。并成功地应用于真实的水样中BPA的测定。
Bisphenol A (BPA) is an environmental pollutant to disrupt endocrine system or cause cancer, thus the detection of BPA is very important. Herein, an amperometric sensor was fabricated based on immobilized CoTe quantum dots (CoTe QDs) and PAMAM dendrimer (PAMAM) onto glassy carbon electrode (GCE) surface. The cyclic voltammogram of BPA on the sensor exhibited a well-defined anodic peak at 0.490V in 0.1M pH 8.0 PBS. The determination conditions were optimized and the kinetic parameters were calculated. The linear range was 1.3×10−8to 9.89×10−6M with the correlation coefficient of 0.9999. The limit of detection was estimated to be 1×10−9M. The current reached the steady-state current within about 5s. Furthermore, the fabricated sensor was successfully applied to determine BPA in real water samples.