|
| Rapid Circular Detection of Chlorpyrifos in Water by Surface Enhanced Raman Spectroscopy Based on Filter Paper Substrate |
| |
| View Full Text Download reader |
| DOI： |
| KeyWord:paper-based Raman spectroscopy photocatalysis water chlorpyrifos |
| Author | Institution |
| JIN Xiang-ying,SUN Ze-fei,WANG Song,GUO Peng-ran,LEI Yong-qian |
1.Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals,Guangdong Provincial Engineering Research Center for Online Monitoring of Water Pollution,Guangdong Institute of AnalysisChina National Analytical Center Guangzhou,Guangdong Academy of Sciences;2.School of Science,Shenyang University of Technology |
|
| Hits: 1695 |
| Download times: 810 |
| Abstract: |
| In this article,a surface enhanced Raman spectroscopy(SERS） based on filter paper substrate was developed for the recyclable detection of chlorpyrifos in water.The substrate was prepared by loading the filter paper with Ag nanoparticles(AgNPs） and ZnO nanoparticles,which has a uniform distribution of hot spot and a good detection stability,and exhibits a high performance in the detection of chlorpyrifos,with a limit of detection(LOD） of 48.53 μg/L and a linear range of 50-500 μg/L.Stability for cycle detection of the substrate was investigated under UV irradiation,and Results showed that chlorpyrifos pesticide could be degraded with ZnO nanoparticles as photocatalyst under the circular irradiation of UV light.Meanwhile,the substrate remained a high Raman activity in each detection.The detection substrate combined with SERS was applied to the detection of chlorpyrifos in real surface water.The spiked recoveries were in the range of 111%-139% with relative standard deviations(RSDs） not more than 12%.The detection limit for chlorpyrifos residues in water based on the fabricated substrate in this paper could meet the limit requirements for groundwater quality standard towards chlorpyrifos in agricultural water and the maximum residue limit value for chlorpyrifos in fruits and vegetables in the pesticide residue limit standard towards food.With the advantages of simple operation,short time consumption and low cost,this method has a great potential in the rapid detection of pesticide residues. |
| Close |
|
|
|