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Fine-scale in-situ measurement of lead ions in coastal sediment pore water based on an all-solid-state potentiometric microsensor

文献类型：期刊论文

作者Zhao, GT; Ding, JW; Qin, W
刊名ANALYTICA CHIMICA ACTA
出版日期2019-09-27
卷号1073页码:39-44
关键词Lead-selective microelectrode Fine-scale In-situ measurement Coastal sediment Pore water
ISSN号0003-2670
DOI10.1016/j.aca.2019.04.059
产权排序[Zhao, Guangtao ; Ding, Jiawang ; Qin, Wei] Chinese Acad Sci, Key Lab Coastal Environm Proc & Ecol Remediat, Shandong Key Lab Coastal Environm Proc, Yantai Inst Coastal Zone Res YIC,YICCAS, Yantai 264003, Shandong, Peoples R China ; [Ding, Jiawang ; Qin, Wei] Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao, Shandong, Peoples R China ; [Zhao, Guangtao] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
文献子类Article
英文摘要Methods for in-situ measurements of heavy metal ions in coastal sediment pore water to elucidate fine-scale biogeochemical and environmental processes are highly required but have rarely been reported. In this work, an all-solid-state lead-selective microelectrode (Pb2+-IS mu E) based on a poly(3,4-ethylenedioxythiophene)-poly(sodium4-styrenesulfonate) (PEDOT/PSS) modified gold wire with a diameter of 14 mu m has been fabricated. The proposed Pb2+-IS mu E is capable of in-situ measurement of Pb2+ in coastal sediment pore water at millimeter depth intervals. The Pb2+-IS mu E shows a Nernstian response for Pb2+ within the activity range of 2.1 x 10(-9)-2.1 x 10(-4) M (S = 28.1 +/- 1.3 mV/dec, R-2 = 0.998) in 0.5 M NaCl, and the detection limit is 6.4 x 10(-10) M. By lowering the microelectrode into a coastal sediment core with a micro-manipulator, the proposed Pb2+-IS mu E allows the direct measurement of the vertical distribution profile of Pb2+ in the pore water. The in-situ measurement of Pb2+ using the microsensor could avoid the problems of sample handling. Moreover, the detection system can be extended to assess the vertical distribution profiles of other heavy metal ions in sediment pore water by using different ion-selective microelectrodes. (C) 2019 Elsevier B.V. All rights reserved.
WOS关键词TRACE-METAL ANALYSIS ; HEAVY-METALS ; SELECTIVE ELECTRODES ; DETECTION LIMIT ; MICROELECTRODE ; SPECIATION ; POLYMER ; ACCUMULATION ; VOLTAMMETRY ; SAMPLES
WOS研究方向Chemistry, Analytical
语种英语
WOS记录号WOS:000469211400004
资助机构National Natural Science Foundation of ChinaNational Natural Science Foundation of China [21677172, 41876108, 21575158] ; Instrument Developing Project of the Chinese Academy of Sciences [Y728021021] ; National Key Research and Development Program of China [2016YFC1400700] ; Taishan Scholar Program of Shandong Province [TSPD20081215]
源URL[http://ir.yic.ac.cn/handle/133337/24856]  
专题烟台海岸带研究所_近岸生态与环境实验室
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
作者单位1.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao, Shandong, Peoples R China;
2.Chinese Acad Sci, Key Lab Coastal Environm Proc & Ecol Remediat, Shandong Key Lab Coastal Environm Proc, Yantai Inst Coastal Zone Res YIC,YICCAS, Yantai 264003, Shandong, Peoples R China;
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Zhao, GT,Ding, JW,Qin, W. Fine-scale in-situ measurement of lead ions in coastal sediment pore water based on an all-solid-state potentiometric microsensor[J]. ANALYTICA CHIMICA ACTA,2019,1073:39-44.
APA Zhao, GT,Ding, JW,&Qin, W.(2019).Fine-scale in-situ measurement of lead ions in coastal sediment pore water based on an all-solid-state potentiometric microsensor.ANALYTICA CHIMICA ACTA,1073,39-44.
MLA Zhao, GT,et al."Fine-scale in-situ measurement of lead ions in coastal sediment pore water based on an all-solid-state potentiometric microsensor".ANALYTICA CHIMICA ACTA 1073(2019):39-44.

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来源：烟台海岸带研究所

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