Position: Home > Articles > Preparation and Application of SERS Wipe Paper Based on Nano-Silver Loading to Nondestructive Detection of Ferbam Residue on the Surface of Fruits and Vegetables
FOOD SCIENCE
2024,45
(10)
265-271
基于纳米银负载的SERS拭纸制备与果蔬表面农残无损检测应用:以福美铁为例
作 者：
张超凡;赵亚楠;王诗瑶;张奇;陈益胜
单 位：
关键词：
柔性基底;表面增强拉曼散射;农药残留;福美铁
摘 要：
通过简单的浸泡方法制备可以得到柔性的滤纸表面增强拉曼散射(surface-enhanced Raman scattering,SERS)拭纸,本研究通过改变其合成和保存条件使其SERS检测性能得到优化.优化后的SERS基底在果蔬表面福美铁残留的快速无损检测中表现出优异性能.研究表明:将滤纸基底在不同浓缩倍数的纳米银中分别浸泡不同的时间,并采用不同的干燥方法,可对SERS基底的检测性能产生显著影响.其中,将滤纸于5倍浓缩纳米银溶胶中浸泡8 h制备所得SERS基底性能明显优于浸泡其余不同时长和浓缩倍数纳米银溶胶制备的基底.采用真空干燥所制备的SERS基底相较于其他干燥方式所得的基底性能更加优秀.在-20 ℃保存条件下,优化后的基底在保存9 d后信号值仍能达到原始峰值的50%左右.同时优化后的滤纸基底具有良好的灵敏性、均匀性和重复性,在玻璃板上检测福美铁的检出限(limit of detection,LOD)可达4.07× 10-6 mg/mL,在菠菜、油桃表面对福美铁的LOD分别是0.043 mg/kg和0.062 mg/kg.该研究可为滤纸SERS基底的开发利用提供有效依据.
译 名：
Preparation and Application of SERS Wipe Paper Based on Nano-Silver Loading to Nondestructive Detection of Ferbam Residue on the Surface of Fruits and Vegetables
关键词：
flexible substrate%surface-enhanced Raman scattering%pesticide residue%ferbam
摘 要：
A flexible wipe paper for rapid nondestructive detection of ferbam residues on the surface of fruits and vegetables by surface-enhanced Raman scattering(SERS)was prepared using filter paper as the substate by a simple soaking method.The synthesis and storage conditions were optimized to ensure that the SERS method has excellent performance.The results showed that concentration factor of silver nanoparticles(AgNPs),soaking time in AgNP solution and drying method greatly affected the performance of the SERS wipe paper.The performance under the condition of soaking for 8 h in a 5-fold concentrate of AgNP solution was significantly better than that under other conditions.The SERS wipe paper prepared by vacuum drying had better performance that those prepared by other drying methods.After 9 days of storage at-20 ℃,the optimized substrate retained approximately 50%of the original peak value.Besides,it exhibited good sensitivity,uniformity,and repeatability.The limit of detection(LOD)for ferbam on a glass plate was 4.07 x 10-6 mg/mL,and the LOD for ferbam on the surface of spinach and nectarine were 0.043 and 0.062 mg/kg,respectively.This study provides an excellent basis for the development and utilization of SERS wipe paper.
