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

doi:10.1016/j.aca.2020.07.019

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 中科院海岸带环境过程与生态修复重点实验室

	Alternative coulometric signal readout based on a solid-contact ion-selective electrode for detection of nitrate
	Wang, Hemin 1,2; Yuan, Baiqing 1; Yin, Tanji 2,3,4; Qin, Wei 2,3,4
刊名	ANALYTICA CHIMICA ACTA
	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-
ISSN号	0003-2670
DOI	10.1016/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.
资助项目	National Natural Science Foundation of China[41706110] ; National Natural Science Foundation of China[21677172] ; National Key Research and Development Program of China[2016YFC1400700] ; Taishan Scholar Program of Shandong Province[TSPD20181215] ; Key Laboratory of Coastal Environmental Processes and Ecological Remediation, YICCAS[2018KFJJ03]
WOS关键词	MEMBRANE ELECTRODES ; CARBON-BLACK ; NITRITE ; GRAPHENE ; MICROSENSOR ; REDUCTION ; SENSORS ; WATER
WOS研究方向	Chemistry
语种	英语
WOS记录号	WOS:000569333800015
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
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/28389]
专题	烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室烟台海岸带研究所_近岸生态与环境实验室
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.