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引用本文:   冯艳, 王济奎, 张宝剑, 孙倩雯, 李晓璐, 张之翼, 唐美华, 陈国松. 基于氧化石墨烯-纳米镍修饰电极的化学耗氧量即时检测系统. 分析化学, 2018, 46(7): 1055-1061. doi:  10.11895/j.issn.0253-3820.181031 [复制]

Citation:   FENG Yan, WANG Ji-Kui, ZHANG Bao-Jian, SUN Qian-Wen, LI Xiao-Lu, ZHANG Zhi-Yi, TANG Mei-Hua, CHEN Guo-Song. A Point of Care Testing System for Chemical Oxygen Demand Based on Graphene Oxide-Nickel Nanoparticles Modified Electrode. Chinese Journal of Analytical Chemistry, 2018, 46(7): 1055-1061. doi: 10.11895/j.issn.0253-3820.181031 [复制]

基于氧化石墨烯-纳米镍修饰电极的化学耗氧量即时检测系统

通讯作者:  陈国松, gschen3303@sina.com

收稿日期: 2018-01-16

接受日期: 2018-05-15

出版日期: 2018-07-10

基金项目: 本文系国家重点基础研究发展计划项目(No.2013CB733501)资助

A Point of Care Testing System for Chemical Oxygen Demand Based on Graphene Oxide-Nickel Nanoparticles Modified Electrode

Corresponding author:  CHEN Guo-Song, gschen3303@sina.com

Received Date:  2018-01-16

Accepted Date:  2018-05-15

Published Date:  2018-07-10

Fund Project:  This work was supported by the China National Program on Key Basic Research and Development Project (No. 2013CB733501)

建立了一套流动态下即时测定化学耗氧量(COD)的电化学分析系统。以GO-NiNPs修饰的平面电极与3D打印薄层流通池构成检测模块,微型蠕动泵驱动试液流经电极表面,采用计时电流法进行测定。考察了修饰材料、介质和电化学操作条件对电极表面形态及分析性能的影响。此装置对COD的响应时间为1.5 min,样品用量约2 mL。在低浓度区间的线性响应范围为0.15~100 mg/L,线性方程i(μA)=3.974c(mg/L)+0.2295,相关系数R=0.9991,检出限0.04 mg/L;在高浓度区间的线性响应范围为100~450 mg/L,线性方程i(μA)=1.938c(mg/L)+230.9,相关系数R=0.9877。此系统对典型环境水样的测定结果与国标GB11914-89法测定结果间相关性良好,而耗时仅为其1/100,且无需使用任何贵重及毒害性试剂,避免了二次污染,具有良好的便携性。

关键词:   氧化石墨烯, 纳米镍, 平面电极, 3D打印薄层流通池, 化学耗氧量, 即时检测
Key words:   Graphene oxide, Nickel nanoparticles, Planar electrode, 3D printed thin-layer cell, Chemical oxygen demand, Point-of-care testing
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基于氧化石墨烯-纳米镍修饰电极的化学耗氧量即时检测系统

冯艳, 王济奎, 张宝剑, 孙倩雯, 李晓璐, 张之翼, 唐美华, 陈国松

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