螯合剂修饰拉锥光纤传感器对铅离子浓度的检测研究  

Study on Determination of Lead Ion Concentration by Chelating Agent Modified Tapered Fiber Optic Sensor

作　　者：陈倩 吴强 刘彬[1] 刘娟[1] 胡莹莹 何兴道[1] Chen Qian;Wu Qiang;Liu Bin;Liu Juan;Hu Yingying;He Xingdao(Key Laboratory of Nondestructive Testing(Ministry of Education),Nanchang Hangkong University,Nanchang 330063,Jiangxi,China)

机构地区：[1]南昌航空大学无损检测技术教育部重点实验室,江西南昌330063

出　　处：《激光与光电子学进展》2023年第11期294-300,共7页Laser & Optoelectronics Progress

基　　金：南昌航空大学研究生创新专项资金(YC2022-084)。

摘　　要：介绍了一种基于螯合剂功能化的拉锥光纤传感器,用于定量检测低浓度重金属铅离子Pb^(2+)。该传感器由单模和四芯光纤制成,并对中间四芯光纤进行拉锥到直径15μm。在此基础上,使用乙二胺四乙酸(EDTA)作为金属螯合剂固定在拉锥四芯光纤传感器表面,从而实现对铅离子Pb^(2+)的高灵敏度检测。实验结果表明,该传感器对重金属铅离子Pb^(2+)检测限为1 ng/m L。此外,该传感器具有良好的稳定性,以及制备工艺简单和响应速度快等优点。In this paper,a tapered optical fiber sensor based on chelating agent functionalization is presented for the quantitative detection of low concentration heavy metal Pb^(2+).The sensor is made of single mode and four core fiber,and the middle four core fiber is tapered to a diameter of 15 microns.On this basis,ethylenediamine tetraacetic acid was used as a metal chelating agent to coat on the surface of a tapered four-core optical fiber sensor,so as to achieve high sensitivity detection of lead ions Pb^(2+).Experimental results show that the detection limit of Pb^(2+)is 1 ng/mL.In addition,the sensor has the advantages of good stability,simple preparation process and fast response speed.

关 键 词：锥形光纤 传感器 乙二胺四乙酸 Pb^(2+)检测 

分 类 号：TN253[电子电信—物理电子学]