Alternative coulometric signal readout based on a solid-contact ion-selective electrode for detection of nitrate

doi:10.1016/j.aca.2020.07.019

	Alternative coulometric signal readout based on a solid-contact ion-selective electrode for detection of nitrate
	Wang, Hemin 1,2; Yuan, Baiqing 1; Yin, Tanji2,3,4 ; Qin, Wei2,3,4
发表期刊	ANALYTICA CHIMICA ACTA
ISSN	0003-2670
	2020-09-08
卷号	1129 页码:136-142
关键词	Coulometric signal Solid-contact ion-selective electrode Electrical double layer capacitance Ordered mesoporous carbon NO3-
DOI	10.1016/j.aca.2020.07.019
通讯作者	Yuan, Baiqing([email protected]) ; Yin, Tanji([email protected])
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：26[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.cn/handle/133337/28390
专题	中国科学院海岸带环境过程与生态修复重点实验室中国科学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 7714	Wang, 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.
APA	Wang, 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.
MLA	Wang, 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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