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Selective Detection of Nitenpyram by Silica-supported Carbon Quantum Dots by Masoumeh Rostami; Baiyu Zhang; Yan Zhang is a Chemistry article available to read on EtoBox.

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In this study, a fluorescent sensor of nitrogen-doped carbon quantum dots (N-CQDs) and silica gel hybrid was developed for the quantitative detection of nitenpyram, a toxic neonicotinoid existing in groundwater and/or surface water.The prepared N-CQDs@SiO2 sensor exhibited remarkable sensing selectivity and sensitivity towards nitenpyram among the four pesticides and six metal ions. A prominent fluorescence quenching of N-CQDs@SiO2 at 445 nm was observed in the presence of nitenpyram with a linear response range of 0–300.0 mg L−1 and an estimated limit of detection of 1.53 mg L−1. The main cause for selective sensing is that nitenpyram absorbs the excitation light of N-CQDs@SiO2, leading to fluorescence quenching of the sensor through the inner filter effect.

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Author

Masoumeh Rostami; Baiyu Zhang; Yan Zhang

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Chemistry (Physical Sciences)