摘要
目的采用碳球复合纳米金金刚石电极(carbon sphere composite gold nanoparticles/diamond electrode,Cs-Au/NBDD)传感器定量分析水中硝基苯。方法以碳球复合纳米金为基质,金刚石电极为工作电极,制备Cs-Au/NBDD传感器。结果Cs-Au具有良好的导电性和电催化作用,能有效促进电化学反应的进行,使氧化峰电流提高了30.78%,提高了Cs-Au/NBDD灵敏度。利用Cs-Au/NBDD对水中的硝基苯进行定量分析,硝基苯浓度与其氧化峰电流在0.002~0.065 g/L呈良好的线性关系,线性方程为Y=58.1894X‒0.034,r 2=0.9982,检出限(S/N=3)为0.00124 g/L,且该传感器重复性较好,加标回收率在98%~100.5%之间,精密度较高。结论该方法准确、可靠,可用于硝基苯的快速定量分析。
Objective To quantitatively analyze nitrobenzene in water using carbon sphere composite gold nanoparticles/diamond electrode(Cs-Au/NBDD)sensor.Methods Cs-Au/NBDD sensor was prepared by using carbon spheres composite gold nanoparticles as the matrix and diamond electrode as the working electrode.Results CS-Au had good electrical conductivity and electrocatalysis,which could effectively promote the electrochemical reaction,increase the oxidation peak current by 30.78%,and improve the CS-Au/NBDD sensitivity.Nitrobenzene in water was quantitatively analyzed by CS-Au/NBDD.The concentration of nitrobenzene and its oxidation peak current showed a good linear relationship between 0.002-0.065 g/L.The linear equation was Y=58.1894 X-0.034,r2=0.9982,the limit of detection(S/N=3)was 0.00124 g/L,and the repeatability of the sensor was good,the recoveries were 98%-100.5%,and the precision was high.Conclusion This method is accurate and reliable,and can be used for rapid quantitative analysis of nitrobenzene.
作者
刘晓伟
顾援农
王伟浩
LIU Xiao-Wei;GU Yuan-Nong;WANG Wei-Hao(Luoyang vocational and Technical College Luoyang 471000,China)
出处
《食品安全质量检测学报》
CAS
北大核心
2021年第10期4124-4128,共5页
Journal of Food Safety and Quality
基金
河南省科技攻关项目(212102310386)。
关键词
硝基苯
碳球复合纳米金
传感器
电化学
nitrobenzene
carbon sphere composite gold nanoparticles
sensor
electrochemistry
作者简介
通信作者:刘晓伟,硕士,副教授,主要研究方向为食品安全、食品工艺。E-mail:liuxiaowei021@126.com。
