Vol. 24 No. 3 (2014)
Papers

Sensitive Organophosphorus and Carbamate Pesticides Biosensor Based on Acetylcholinesterase and CdZnSe/ZnS Ternary Alloy Quantum Dots

Nguyen Ngoc Hai
Institute of Materials Science, Vietnamese Academy of Science and Technology, No.18, Hoang Quoc Viet Road, Cau Giay Dist., Hanoi City, Vietnam
Bio
Nguyen Hai Yen
Institute of Materials Science, Vietnamese Academy of Science and Technology
Duong Thi Giang
Institute of Materials Science, Vietnamese Academy of Science and Technology
Nguyen Duc Nhat
Institute of Materials Science, Vietnamese Academy of Science and Technology
Pham Thu Nga
Institute of Materials Science, Vietnamese Academy of Science and Technology
Dao Tran Cao
Institute of Materials Science, Vietnamese Academy of Science and Technology

Published 21-08-2014

Keywords

  • pesticide,
  • biosensors,
  • ternary alloy quantum dots,
  • photoluminescence

How to Cite

Hai, N. N., Yen, N. H., Giang, D. T., Nhat, N. D., Nga, P. T., & Cao, D. T. (2014). Sensitive Organophosphorus and Carbamate Pesticides Biosensor Based on Acetylcholinesterase and CdZnSe/ZnS Ternary Alloy Quantum Dots. Communications in Physics, 24(3), 225. https://doi.org/10.15625/0868-3166/24/3/3791

Abstract

This report presents the results of ternary alloy quantum dots (TQDs) manufacturing and its superior optical properties to fabricate the biosensor for pesticide detection. The explanation for the changes in PL intensity based on the change of electronic charges that alters the pH value of the surrounding environment, and the types of interaction on the surface of CdZnSe/ZnS TQDs were discussed. We show the decomposition process of the indicator (ATCh) with the catalysis from acetylcholinesterase enzyme (AChE) that inhibited by organophosphorus and carbamate pesticides including Trichlorfon (TF), Cypermethrin (CH), Abamectin (AT), and Carbosulfan (CS) with concentrations from 0.05 ppm to 10 ppm.

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