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- Title
Highly Selective Electrochemiluminescence Sensor Based on Molecularly Imprinted-quantum Dots for the Sensitive Detection of Cyfluthrin.
- Authors
Xu, Jinjin; Zhang, Rongrong; Liu, Chenxi; Sun, Aili; Chen, Jiong; Zhang, Zeming; Shi, Xizhi
- Abstract
A highly selective and sensitive molecularly imprinted electrochemiluminescence (MIECL) sensor was developed based on the multiwall carbon nanotube (MWCNT)-enhanced molecularly imprinted quantum dots (MIP-QDs) for the rapid determination of cyfluthrin (CYF). The MIP-QDs fabricated by surface grafting technique exhibited excellent selective recognition to CYF, resulting in a specific decrease of ECL signal at the MWCNT/MIP-QD modified electrode. Under optimal conditions, the MIECL signal was proportional to the logarithm of the CYF concentration in the range of 0.2 µg/L to 1.0 × 103 µg/L with a determination coefficient of 0.9983. The detection limit of CYF was 0.05 µg/L, and good recoveries ranging from 86.0% to 98.6% were obtained in practical samples. The proposed MIECL sensor provides a novel, rapid, high sensitivity detection strategy for successfully analyzing CYF in fish and seawater samples.
- Subjects
ELECTROCHEMILUMINESCENCE; QUANTUM dot synthesis; QUANTUM dots; DETECTORS; DETECTION limit; IMPRINTED polymers
- Publication
Sensors (14248220), 2020, Vol 20, Issue 3, p884
- ISSN
1424-8220
- Publication type
Article
- DOI
10.3390/s20030884