中国司法鉴定Issue(3)：59-66,8.DOI:10.3969/j.issn.1671-2072.2025.03.008
基于表面增强拉曼光谱的五种农兽药快速检测
Rapid Detection of Five Agricultural and Veterinary Drugs by Surface-Enhanced Raman Spectroscopy
摘要
Abstract
Objective To establish a surface-enhanced Raman spectroscopy(SERS)method for the rapid detection of three forbidden veterinary drugs,crystal violet,malachite green,and methylene blue,as well as two pesticides,thiram and thiabendazole.Methods Polyurethane(PU)yarn was used as a flexible substrate,and its surface was further modified with polydopamine(PDA)functional layer.The modified yarn(PU@PDA)was then immersed in a silver ammonia solution.The silver ions in silver ammonia complex can be in-situ reduced to silver nanoparticles(AgNPs)by the reducibility of PDA.This produced the PU@PDA@AgNPs composite flexible SERS substrate material.Moreover,the sensitivity of the SERS material can be optimized by changing the concentration of silver ammonia solution to control the amount of AgNPs on PU@PDA yarn.The new material was then applied in the detection of three dye based forbidden veterinary drugs and two pesticides.Results The limits of detection for crystal violet,malachite green,and methylene blue can be as low as 1.0×10-8 mol/L,and the limits of detection for pesticides thiram and thiabendazole were as low as 0.5 mg/kg and 2 mg/kg,respectively.Conclusion This method is easy to operate,environmentally friendly,safe and highly sensitive.It can provide technical support for the rapid on-site detection of agricultural and veterinary drug residues.关键词
表面增强拉曼光谱/聚氨酯/银纳米粒子/农兽药Key words
surface-enhanced Raman spectroscopy(SERS)/polyurethane(PU)/silver nanoparticles(AgNPs)/agricultural and veterinary drug分类
政治法律引用本文复制引用
李亚玲,赵越杰,胡向阳,周吉..基于表面增强拉曼光谱的五种农兽药快速检测[J].中国司法鉴定,2025,(3):59-66,8.基金项目
2023年度国家社会科学基金一般项目(23BFX139) （23BFX139）
教育部科技部司法鉴定技术应用与社会治理学科创新引智基地项目(B20077). （B20077）
