A Ratiometric Fluorescence Nanoprobe Using CdTe QD for Detection of Carbaryl Insecticide
Paper ID : 1548-ICNS
Faezeh Shahdost-fard *1, Nafiseh Fahimikashani2, M. Reza Hormozi-Nezhad3
1Chemistry Department, Sharif University of Technology, Tehran, Iran
2Department of Chemistry, Sharif University of Technology, Tehran, Iran
3Department of Chemistry and INST
Abstract: Carbaryl is a broad-spectrum carbamate insecticide by a likely human carcinogen that has been warned by the U.S Environmental Protection Agency (EPA). Due to the serious environmental pollution and ecological risks of the carbaryl detection of this is important. In this study, a simple and sensitive fluorimetric method based on utilizing the nanoprobe of the cadmium telluride (CdTe) quantum dot (QD) has been presented for the detection of very low quantities of the carbaryl. The sensing strategy relies on the rapid hydrolysis of the carbaryl under the alkaline condition and production of the 1-Naphthol with a blue color emission signal at 470 nm. The nanoprobe CdTe QD with a yellow emit to act as a reference to promote the ratiometric fluorescence assay. This off-on strategy method can to carbaryl detection with satisfactory selectivity in the presence of other similar substrates. The highly sensitive naked-eye ratiometric sensor for sensing of the target was successfully applied in the real sample.
Keywords: Fluorimetric sensor; Carbaryl; CdTe QD; Ratiometric assay; Insecticide.
Status : Abstract Accepted (Poster Presentation)