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Thin polymeric membrane ion-selective electrodes for trace-level potentiometric detection

文献类型：期刊论文

作者Wang, Junhao1,4; Liang, Rongning2,4; Qin, Wei2,3,4
刊名ANALYTICA CHIMICA ACTA
出版日期2020-12-01
卷号1139页码:1-7
关键词Ion-selective electrode Thin-layer membrane Trace-level analysis Non-classical potentiometric sensor Solid contact
ISSN号0003-2670
DOI10.1016/j.aca.2020.09.024
通讯作者Liang, Rongning(rnliang@yic.ac.cn) ; Qin, Wei(wqin@yic.ac.cn)
英文摘要In this work, we describe a novel method to improve the detection limits of the non-classical polymeric membrane ion-selective electrodes (ISEs) which are conditioned with highly discriminated ions instead of primary ions. It is based on a thin-layer ISE membrane with a thickness of 5 mm, which is coated on ordered mesoporous carbon used as solid contact. The diffusion of the primary ion from the surface of the sensing membrane to the bulk of the membrane could be avoided by the proposed thin membrane configuration. Since the detection sensitivity of the non-classical ISEs depends on the accumulation of the primary ion in the interfacial layer of the sensing membrane, a lower detection limit can be obtained. By using the copper ion as a model, the present potentiometric sensor shows a significantly improved detection sensitivity compared to the conventional ISE with a membrane thickness of ca. 200 mm. Low detection limits of 0.29 and 0.53 nM can be obtained in 0.01 and 0.5 M NaCl, respectively. In addition, the proposed sensor exhibits an excellent reversibility by using a neutral proton-selective ionophore incorporated in the thin membrane. (C) 2020 Elsevier B.V. All rights reserved.
WOS关键词IONOPHORE-BASED MEMBRANE ; DETECTION LIMIT ; BULK OPTODES ; COEFFICIENTS ; SENSORS
资助项目National Natural Science Foundation of China[21677172] ; National Natural Science Foundation of China[21874151] ; National Key Research and Development Program of China[2016YFC1400700] ; Youth Innovation Promotion Association of CAS[2014190] ; Taishan Scholar Program of Shandong Province[tspd20181215]
WOS研究方向Chemistry
语种英语
WOS记录号WOS:000595167700001
资助机构National Natural Science Foundation of China ; National Key Research and Development Program of China ; Youth Innovation Promotion Association of CAS ; Taishan Scholar Program of Shandong Province
源URL[http://ir.yic.ac.cn/handle/133337/27540]  
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Liang, Rongning; Qin, Wei
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Shandong, Peoples R China
3.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Biol & Biotechnol, Qingdao 266237, Shandong, Peoples R China
4.Chinese Acad Sci, Shandong Key Lab Coastal Environm Proc, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai Inst Coastal Zone Res YIC,YICCAS, Yantai 264003, Shandong, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Junhao,Liang, Rongning,Qin, Wei. Thin polymeric membrane ion-selective electrodes for trace-level potentiometric detection[J]. ANALYTICA CHIMICA ACTA,2020,1139:1-7.
APA Wang, Junhao,Liang, Rongning,&Qin, Wei.(2020).Thin polymeric membrane ion-selective electrodes for trace-level potentiometric detection.ANALYTICA CHIMICA ACTA,1139,1-7.
MLA Wang, Junhao,et al."Thin polymeric membrane ion-selective electrodes for trace-level potentiometric detection".ANALYTICA CHIMICA ACTA 1139(2020):1-7.

入库方式： OAI收割

来源：烟台海岸带研究所

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