期刊
ANALYTICA CHIMICA ACTA
卷 711, 期 -, 页码 24-28出版社
ELSEVIER
DOI: 10.1016/j.aca.2011.10.051
关键词
N-doped graphene; Electrochemical sensor; Bisphenol A; Endocrine disruptor
资金
- Natural Science Foundation of China [21075052, 81000976, 21175057]
- Natural Science Foundation of Shandong Province [ZR2010BM030, ZR2010EM063]
- Science and Technology Key Plan Project of Shandong Province [2010GSF10628]
- Special Research and Development Environmental Protection Industry of Shandong Province
- Science and Technology Development Plan Project of Jinan City [201004015]
Bisphenol A (BPA), which could disrupt endocrine system and cause cancer, has been considered as an endocrine disruptor. Therefore, it is very important and necessary to develop a sensitive and selective method for detection of BPA. Herein, nitrogen-doped graphene sheets (N-GS) and chitosan (CS) were used to prepare electrochemical BPA sensor. Compared with graphene, N-GS has favorable electron transfer ability and electrocatalytic property, which could enhance the response signal towards BPA. CS also exhibits excellent film forming ability and improves the electrochemical behavior of N-GS modified electrode. The sensor exhibits a sensitive response to BPA in the range of 1.0 x 10(-8)-1.3 x 10(-6) mol L-1 with a low detection limit of 5.0 x 10(-9) mol L-1 under the optimal conditions. Finally, this proposed sensor was successfully employed to determine BRA in water samples with satisfactory results. (C) 2011 Elsevier B.V. All rights reserved.
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