ZnO NPs增敏流动注射化学发光法检测雨水中的H_2O_2  

Determination of H_2O_2 in rainwater using flow injection chemiluminescence enhanced by ZnO nanoparticles

作　　者：陈华[1] 陈祖琴[1] 杨敏[1] 谢雪[1] 

机构地区：[1]重庆大学化学化工学院,重庆400044

出　　处：《重庆大学学报（自然科学版）》2016年第4期112-117,共6页Journal of Chongqing University

基　　金：国家自然科学基金资助项目(21005092)~~

摘　　要：基于ZnO纳米颗粒（ZnO nanoparticles,ZnO NPs）增敏luminol-H2O2化学发光,结合流动注射技术,研究建立一种简单、快速、灵敏地测定雨水中微量H2O2的方法。考察pH,ZnO NPs、luminol和H2O2浓度对化学发光的影响。在优化条件下,H2O2浓度在0.06~20μmol/L范围内,H2O2浓度的对数（lg c）和化学发光峰面积的对数（lg A）具有良好的线性关系,检出限（LOD）为0.016μmol/L（3σ）。将此方法应用于雨水中微量H2O2的测定,回收率为95%~102%,RSD（n=11）为2.41%。Based on the fact that the ZnO nanoparticles （ZnO NPs） can enhance the weak chemiluminescence （CL） of the luminol-H202 system, a simple, fast and sensitive flow injection CL method was developed for the determination of H2O2 in rainwater. Experimental parameters affecting CL were optimized, including pH and concentrations of ZnO NPs, luminol and H2O2. Under optimal conditions, the logarithm of CL peak area （lg A） is linear with the logarithm of the concentration （lg c） of H2O2 when the concentration of H2O2 ranges from 0.06 to 20μmol/L and its limit of detection is 0.016 μmol/L（3σ）. The method has been successfully applied to the determination of Ha 02 in rainwater, giving recovery rate in the range of 95%-102% and RSD （n=11） of 2.41%.

关 键 词：LUMINOL ZnO纳米颗粒 H2O2 雨水 

分 类 号：O657.3[理学—分析化学]