分析化学2024，Vol.52Issue(3)：356-363,中插13-中插23,19.DOI:10.19756/j.issn.0253-3820.231350
电分离/富集-信号放大一体化策略用于农药残留精准检测
Electrokinetic Separation/Concentration-Signal Amplification All-in-One Strategy for Accurate Detection of Pesticide Residues
摘要
Abstract
Surface-enhanced Raman scattering(SERS)is a kind of highly sensitive analytical technique for trace amount analytes,which shows great application potential in environmental analysis and food safety.Due to the potential matrices interference,it is essential to eliminate or reduce the interference of environment factors.The strategy of integration of separation/concentration with detection is an effective way to ensure accurate detection of charged molecules in complex samples.In this study,an all-in-one strategy for simultaneous concentration and highly sensitive detection of charged pesticides was developed based on the use of a reduced graphene oxide-gold nanoparticles nanocomposite(Au-RGO)modified screen-printed carbon electrode(SPCE)and combining electrokinetic trapping and SERS detection.By virtue of the signal amplification of Au-RGO,the sensitive detection of simazine,amitrole,malathion and methyl-parathion was realized.The method had wide linear detection ranges for the four kinds of pesticides(0.001-500 μmol/L),with detection limits from 0.3 to 2.0 nmol/L.This study provided a solution for the bottleneck issues such as matrix interferences and sophisticated pretreatment procedures of traditional SERS sensor for complex media,providing a new analytical method for in-field detection of environment pollutants.关键词
表面增强拉曼散射/传感器/电富集/石墨烯/农药Key words
Surface-enhanced Raman scattering/Sensors/Electrokinetic enrichment/Graphene/Pesticides引用本文复制引用
李博,黄德铭,彭睿琦,邓维,李丹..电分离/富集-信号放大一体化策略用于农药残留精准检测[J].分析化学,2024,52(3):356-363,中插13-中插23,19.基金项目
国家自然科学基金项目(Nos.21976123,21507089)和上海市科委农业领域重点项目(No.19391901800)资助. Supported by the National Natural Science Foundation of China(Nos.21976123,21507089)and the Science and Technology Commission of Shanghai Municipality(No.19391901800). （Nos.21976123,21507089）
