功能化金纳米颗粒对湖水样品中Pb^(2+)的检测研究  

Detection of Pb^(2+) in lake water samples based on functionalized gold nanoparticles

作　　者：张秀娟 刘红艳[2] 张海荣[2] 张冠华[2] ZHANG Xiu-juan;LIU Hong-yan;ZHANG Hai-rong;ZHANG Guan-hua(Key Laboratory of Coal Seienee and Teehnology of the Ministry of Education and Shanxi Provinee,Taiyuan University of Technology,Taiyuan 030024,China;School of Chemistry and Environmental Engineering,Datong University,Datong 037009,China)

机构地区：[1]太原理工大学煤科学与技术教育部和山西省重点实验室,山西太原030024 [2]山西大同大学化学与环境工程学院,山西大同037009

出　　处：《现代化工》2018年第7期236-238,共3页Modern Chemical Industry

摘　　要：通过功能化金纳米颗粒GSH@AuNPs的显色反应实现对Pb^(2+)的简单、快速以及灵敏的可视化以及定量检测。谷胱甘肽上的巯基为谷胱甘肽活性基团,当铅离子存在时,谷胱甘肽与之结合发生配位作用。巯基捕捉铅离子,形成稳定的配位结构,使得金纳米颗粒发生团聚,颜色由酒红色变为蓝色,实现了对铅离子的检测,并且具有良好的选择性,检测灵敏度达到0.05μmol/L。该方法简单便捷,同时实现了对实际样品水样中铅离子的检测。In this paper, a simple, fast and sensitive visualized and quantitative detection for Pb^2＋ is realized through the color change of the functionalized gold nanoparticle GSH@ AuNPs.The --SH group is the active group on glutathione. There will be a coordination reaction between glutathione and Pb^2＋ in the presence of Pb^2＋.The --SH can capture Pb^2＋ to form a stable coordination structure,which induces GSH@ AuNPs to aggregate, reflecting with a color change from claret to blue.The detection to Pb^2＋ with the detection limit of 0.05 μmol·L^-1 is therefore realized.This method is simple and convenient, and can achieve the detection of Pb^2＋ in lake water samole.

关 键 词：功能化金纳米颗粒 谷胱甘肽 可视化 PB^2+ 

分 类 号：O65[理学—分析化学]