| Autor: |
Dayalan, Sandhiya, Sudewi, Sri, Zulfajri, Muhammad, Kao, Chai‐Lin, Huang, Genin Gary |
| Zdroj: |
Journal of the Chinese Chemical Society; September 2023, Vol. 70 Issue: 9 p1821-1834, 14p |
| Abstrakt: |
The rapid detection and efficient properties of surface‐enhanced Raman scattering (SERS) have been widely exploited in food safety. In this study, the SERS impact of cysteine‐functionalized gold core‐silver shell bimetallic nanoparticle (Au@Ag@CysNPs) substrates with different pH treatments on pesticide compounds was examined. The pH‐dependent SERS impact of Au@Ag@CysNPs on detecting pesticide compounds exhibited different enhancements over the pH range of 2–11 and exited the highest enhancement at a pH of 5 for thiabendazole and thiram pesticides. The prepared Au@Ag@CysNPs were further utilized in SERS‐based rapid detection of pesticides on apple peels by directly dropping Au@Ag@CysNPs on the surface of the samples, where the target molecules could be identified without elution or extraction. These findings revealed that this Au@Ag@CysNPs substrate exhibited excellent SERS performances for pesticide compounds and good stability. With additional optimization, detection limits of 0.1 ng/cm2for thiabendazole and thiram on apple peels were obtained. This study investigates the SERS impact of Au@Ag@CysNPs on pesticide detection on fruit peels. The study found enhanced pH‐dependent performance for thiabendazole and thiram pesticides, with the highest enhancement at 5 pH. Au@Ag@CysNPs demonstrated excellent SERS performance and stability, with detection limits of 0.1 ng/cm2for thiabendazole and thiram. This process could be performed within 8 min. |
| Databáze: |
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