Wang, Hemin1,2; Yuan, Baiqing1; Yin, Tanji2,3,4
; Qin, Wei2,3,4发表期刊ANALYTICA CHIMICA ACTA
ISSN0003-2670
2020-09-08
卷号1129页码:136-142
关键词Coulometric signalSolid-contact ion-selective electrodeElectrical double layer capacitanceOrdered mesoporous carbonNO3-
DOI10.1016/j.aca.2020.07.019
通讯作者Yuan, Baiqing(bqyuan@ldu.edu.cn); Yin, Tanji(tjyin@yic.ac.cn)
英文摘要Traditional potentiometric NO3--selective electrodes suffer from a fundamental limitation of the Nernst slope (59.1 mV/dec at 25 degrees C) due to the relationship between the potential and the logarithmic of ionic activity. Herein, a coulometric signal readout is proposed instead of the potentiometric response for detection of NCii based on an ordered mesoporous carbon (OMC)-based solid-contact ion-selective electrode (ISE). The mechanism for obtaining the coulometric signal is based on the electrical double layer capacitance of OMC compensating the potential change at the ion-selective membrane/solution interface during the measurements under the control of a constant applied potential. Under the optimized conditions, the coulometric signal for the OMC-based solid-contact NO3--ISE shows two linear responses in the activity range of 1.0 x 10(-6)-8.0 x 10(-6) M and 8.0 x 10(-6)-8.0 x 10(-4) M, and the detection limit is 4.0 x 10(-7) M (3 sigma/s). The proposed coulometric response also shows excellent reproducibility and stability in the presence of O-2 and CO2 and light on/off. Additionally, the coulometric response shows acceptable and reliable results for detection of NO3- in mineral water as compared to the traditional potentiometric response and the ion chromatography. This work provides a promising alternative signal readout for detection of ions by using solid-contact ion-selective electrodes. (C) 2020 Elsevier B.V. All rights reserved.
资助机构National Natural Science Foundation of China; National Key Research and Development Program of China; Taishan Scholar Program of Shandong Province; Key Laboratory of Coastal Environmental Processes and Ecological Remediation, YICCAS
收录类别SCI
语种英语
关键词[WOS]MEMBRANE ELECTRODES; CARBON-BLACK; NITRITE; GRAPHENE; MICROSENSOR; REDUCTION; SENSORS; WATER
研究领域[WOS]Chemistry
WOS记录号WOS:000569333800015
引用统计被引频次：4[WOS][WOS记录][WOS相关记录]
文献类型期刊论文
条目标识符http://ir.yic.ac.cnhttp://ir.yic.ac.cn/handle/133337/28390
专题中科院海岸带环境过程与生态修复重点实验室
中科院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
通讯作者Yuan, Baiqing; Yin, Tanji作者单位1.Ludong Univ, Sch Chem & Mat Sci, Yantai 264025, Shandong, Peoples R China
2.Chinese Acad Sci, Shandong Prov Key Lab Coastal Environm Processes, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai Inst Coastal Zone Res YIC,YICCAS, Yantai 264003, Shandong, Peoples R China
3.Pilot Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao 26620, Peoples R China
4.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Shandong, Peoples R China
推荐引用方式
GB/T 7714Wang, Hemin,Yuan, Baiqing,Yin, Tanji,et al. Alternative coulometric signal readout based on a solid-contact ion-selective electrode for detection of nitrate[J]. ANALYTICA CHIMICA ACTA,2020,1129:136-142.
APAWang, Hemin,Yuan, Baiqing,Yin, Tanji,&Qin, Wei.(2020).Alternative coulometric signal readout based on a solid-contact ion-selective electrode for detection of nitrate.ANALYTICA CHIMICA ACTA,1129,136-142.
MLAWang, Hemin,et al."Alternative coulometric signal readout based on a solid-contact ion-selective electrode for detection of nitrate".ANALYTICA CHIMICA ACTA 1129(2020):136-142.
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