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- W4309771566 abstract "Poor stability of noble nanoparticles and various matrix interferences limit the application of surface-enhanced Raman scattering(SERS) analysis in practical samples. To address these issues, a novel SERS substrate was fabricated by using silver nanoparticles to modify polyhedral oligomeric silsesquioxane(POSS) polymer. AgNPs can be immobilized on POSS polymer through Ag-N interaction by in-situ reduction method. The AgNPs/POSS-P substrate exhibited excellent SERS activity with good stability. The possible selective mechanism of AgNPs/POSS-P for heterocyclic aromatic amine (HAA) was investigated by density functional theory calculation. Subsequently, the AgNPs/POSS-P substrate was used for SERS analysis of two trace HAAs including 2-amino-1,6-dimethylimidazo[4,5-b]pyridine(DMIP) and 2-amino-3,4-dimethyl-3himidazo[4,5-f]quinoline(MeIQ) in range from 1.0-200.0 μg/L and 10.0-500.0 μg/L. The limits of detections were 0.75 μg/L and 4.54 μg/L, respectively. In addition, AgNPs/POSS-P substrate was used for analysis of DMIP and MeIQ in roast meat samples. The recoveries were 88.1%-109.5% for DMIP and 81.9%-112.5% for MeIQ with the relative standard deviations of 2.7%-9.5% and 3.2%-9.1%, respectively. All these results demonstrated the promising application of the fabricated AgNPs/POSS-P composite in SERS analysis of food samples." @default.
- W4309771566 created "2022-11-29" @default.
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- W4309771566 date "2023-02-01" @default.
- W4309771566 modified "2023-10-02" @default.
- W4309771566 title "Fabrication of silver nanoparticles modified POSS polymer composite for SERS analysis of trace heterocyclic aromatic amines in roast meat samples" @default.
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- W4309771566 doi "https://doi.org/10.1016/j.snb.2022.133038" @default.
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