1. An interference-free SERS-based aptasensor for chlorpyrifos detection.
- Author
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Wang H, Chen Z, Zhu C, Du H, Mao J, Qin H, She Y, and Yan M
- Subjects
- Gold chemistry, Tandem Mass Spectrometry, Spectrum Analysis, Raman methods, Limit of Detection, Chlorpyrifos analysis, Metal Nanoparticles chemistry, Aptamers, Nucleotide chemistry, Biosensing Techniques
- Abstract
In this study, we propose an interference-free SERS-based aptasensor for trace detection of chlorpyrifos (CPF) in real samples. In the aptasensor, gold nanoparticles coated with Prussian blue (Au@PB NPs) were employed as SERS tags to provide a sole and intense Raman emission at 2160 cm
-1 , which could avoid overlapping with the Raman spectrum of the real samples in 600-1800 cm-1 to improve the anti-matrix effect ability of the aptasensor. Under the optimum conditions, this aptasensor displayed a linear response for CPF detection in the range of 0.1-316 ng mL-1 with a low detection limit of 0.066 ng mL-1 . In addition, the prepared aptasensor shows excellent application to determine CPF in cucumber, pear and river water samples. The recovery rates were highly correlated with high-performance liquid chromatography‒mass spectrometry (HPLC‒MS/MS). This aptasensor shows interference-free, specific and sensitive detection for CPF and offers an effective strategy for other pesticide residue detection., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023. Published by Elsevier B.V.)- Published
- 2023
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