摘要
目的:采用Fe_(3)O_(4)@C/[BSMIM]HSO_(4)/GCE对水中的铅离子进行定量分析。方法:在四氧化三铁(Fe_(3)O_(4))的基础上,制备了具有核壳结构的Fe_(3)O_(4)@C纳米复合材料,并复合1-甲基-3-丁磺酸基咪唑硫酸氢盐([BSMIM]HSO_(4))离子液体,以玻碳电极(Glassy carbon electrode,GCE)为载体,制备了Fe_(3)O_(4)@C/[BSMIM]HSO_(4)/GCE,并利用其对饮用水中铅离子进行定量分析。结果:Fe_(3)O_(4)@C具有良好的导电性和分散性,Fe_(3)O_(4)@C/[BSMIM]HSO_(4)/GCE具有较好的电化学稳定性和电催化活性。利用Fe_(3)O_(4)@C/[BSMIM]HSO_(4)/GCE对饮用水中铅离子进行定量分析,铅离子浓度与峰电流在0.1~80.0μg/L内呈良好的线性关系,R 2=0.9995,检出限为0.038μg/L(S/N=3),检出限较低,其加标回收率在97.60%~100.93%,回收效果较好,准确度较高。且该传感器重复性较好,连续差分脉冲扫描10次其相对标准偏差为2.446%。结论:该方法简单、快捷、可靠,为饮用水中铅离子的检测分析提供了一种新的解决方案。
Objective:Detect lead ions in water using Fe_(3)O_(4)@C/[BSMIM]HSO_(4)/GCE.Methods:The Fe_(3)O_(4)@C that had core-shell structure was synthesized based on Fe_(3)O_(4) which was compounded with 1-methyl-3-butanesulphonic acid imidazole bisulfate ionic liquid for preparing the Fe_(3)O_(4)@C/[BSMIM]HSO_(4) sensor that using the glassy carbon electrode as carrier.Results:The study found that Fe_(3)O_(4)@C had a good conductivity and dispersion.The Fe_(3)O_(4)@C/[BSMIM]HSO_(4)/GCE has a good electrochemical stability and electrocatalytic activity.The quantitative analysis of lead ion in drinking water was done using the Fe_(3)O_(4)@C/[BSMIM]HSO_(4)/GCE.The result showed that there was a good linear relationship between the concentration of lead ion and its oxidation peak current in the range of 0.1~80.0μg/L,R 2=0.9995,the detection limit was 0.038μg/L(S/N=3),which was very low,and the recovery was 97.60%~100.93%,with very good recovery effect and high accuracy.The sensor has a good repeatability,the RSD for 10 times was 2.446%.Conclusion:The method is simple,fast and reliable,which provides a new solution for the detecting the lead ions in drinking water.
作者
刘晓伟
王伟浩
顾援农
王静静
LIU Xiao-wei;WANG Wei-hao;GU Yuan-nong;WANG Jing-jing(Luoyang Pplytechnic,Luoyang,Henan 471099,China;Changyuan Cuisine Vocatinal and Technical College,Xinxiang,Henan 453400,China)
出处
《食品与机械》
北大核心
2021年第10期61-66,共6页
Food and Machinery
基金
河南省重点研发与推广专项(科技攻关)(编号:212102310386)。
关键词
四氧化三铁
传感器
铅离子
电化学检测
ferric oxide
ionic liquid
composite material
lead ion
electrochemical detection
作者简介
刘晓伟(1983—),男,洛阳职业技术学院副教授,硕士。E-mail:liuxiaowei021@126.com。
