| Fine-scale in-situ measurement of lead ions in coastal sediment pore water based on an all-solid-state potentiometric microsensor | |
Zhao, GT; Ding, JW ; Qin, W
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| 发表期刊 | ANALYTICA CHIMICA ACTA
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| ISSN | 0003-2670 |
| 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 |
| 研究领域 | Chemistry, Analytical |
| DOI | 10.1016/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 |
| 通讯作者 | Ding, Jiawang(jwding@yic.ac.cn) ; Qin, Wei(wqin@yic.ac.cn) |
| 作者部门 | 海岸带环境过程实验室 |
| 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. |
| 文章类型 | Article |
| 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] |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | TRACE-METAL ANALYSIS ; HEAVY-METALS ; SELECTIVE ELECTRODES ; DETECTION LIMIT ; MICROELECTRODE ; SPECIATION ; POLYMER ; ACCUMULATION ; VOLTAMMETRY ; SAMPLES |
| 研究领域[WOS] | Chemistry, Analytical |
| WOS记录号 | WOS:000469211400004 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/24856 |
| 专题 | 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 中国科学院海岸带环境过程与生态修复重点实验室 |
| 作者单位 | 1.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; 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao, 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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