期刊
MICROCHIMICA ACTA
卷 180, 期 1-2, 页码 109-115出版社
SPRINGER WIEN
DOI: 10.1007/s00604-012-0909-z
关键词
BPA detection; Electrochemical aptasensor; Ultrasensitive; Water quality; Food safety
资金
- Huangshan Young Scholar Fund of Hefei University of Technology [407-037025]
- Science and Technology Research Project of General Administration of QSIQ of P. R. China [201210127]
- 12th Five Years Key Programs [2012BAK17B10, SS2012AA101001]
- foundation for the author of national excellent doctoral dissertation of China [201187]
- National Science Foundation of China [20906039]
- Fundamental Research Funds for the Central Universities [2012HGCX0003]
We present an electrochemical aptasensor for rapid and ultrasensitive determination of the additive bisphenol A (BPA) and for screening drinking water for the presence of BPA. A specific aptamer against BPA and its complementary DNA probe were immobilized on the surface of a gold electrode via self-assembly and hybridization, respectively. The detection of BPA is mainly based on the competitive recognition of BPA by the immobilized aptamer on the surface of the electrode. The electrochemical aptasensor enables BPA to be detected in drinking water with a limit of detection as low as 0.284 pgmL(-1) in less than 30 min. This extraordinary sensitivity makes the method a most powerful tool for on-site monitoring of water quality and food safety.
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