分析化学2024，Vol.52Issue(1)：62-71,10.DOI:10.19756/j.issn.0253-3820.231240
便携式电化学传感平台灵敏检测偶氮类染料日落黄和柠檬黄
Portable Electrochemical Sensor for Sensitive Detection of Azo Dyes Sunset Yellow and Tartrazine
摘要
Abstract
A polymethionine(p-Met)-modified laser-induced graphene(LIG)electrode was constructed and integrated with portable electrochemical workstations and handheld computer to achieve on-site,simultaneous detection of azo dyes sunset yellow(SY)and tartrazine(Tz)in environmental water.Firstly,the sensor interface with the best electrical conductivity was obtained by optimizing the laser processing parameters,and then the electrochemical responses of SY and Tz were improved by electropolymerization of methionine on the surface of LIG.Finally,a portable electrochemical sensor platform was built by connecting p-Met/LIG,a small electrochemical workstation and a handheld computer application program.Differential pulse voltammetry(DPV)was used to determine these two dyes.SY showed a good linear relationship in the concentration range of 0.2-20 μmol/L and 20-100 μmol/L,the detection limit was as low as 0.001 μmol/L.Tz showed a good linear relationship in concentration range of 0.3-40 μmol/L and 40-100 μmol/L,and the detection limits was as low as 0.005 μmol/L.p-Met/LIG also had excellent anti-interference performance and reproducibility.The portable electrochemical platform was applied to real-time detection of real water samples,and the results showed that the platform was expected to be applied in field detection of SY and Tz in real environmental water bodies.关键词
激光诱导石墨烯/电化学传感器/便携式/偶氮染料/日落黄/柠檬黄Key words
Laser induced graphene/Electrochemical sensor/Portable/Azo dye/Sunset yellow/Tartrazine引用本文复制引用
常雪晴,王子棋,鲁理平..便携式电化学传感平台灵敏检测偶氮类染料日落黄和柠檬黄[J].分析化学,2024,52(1):62-71,10.基金项目
国家自然科学基金项目(No.22276005)和北京市卓越青年科学家计划项目(No.BJJWZYJH01201910005017)资助. Supported by the National Natural Science Foundation of China(No.22276005)and the Beijing Outstanding Young Scientist Program(No.BJJWZYJH01201910005017). （No.22276005）
