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Electrochemical Sensing System for Rapid In Situ Monitoring of Oceanic pCO2

文献类型：期刊论文

作者Liao, Zhibo3; Jiang, Tianjia3; Qin, Wei1,2,3
刊名ACS EARTH AND SPACE CHEMISTRY
出版日期2023-11-02
卷号7期号:11页码:2182-2189
ISSN号2472-3452
关键词carbon dioxide in situ detection electrochemical sensor ion-selective electrode marine environmental monitoring
DOI10.1021/acsearthspacechem.3c00047
通讯作者Jiang, Tianjia(tjjiang@yic.ac.cn) ; Qin, Wei(wqin@yic.ac.cn)
英文摘要Oceanic partial pressure of carbon dioxide (pCO(2)) monitoring is of great importance for fully understanding the inorganic carbon chemistry of seawater. However, the in situ determination of pCO(2) via electrochemical sensing is still a challenge as a result of the fluctuating salinities and temperatures in a marine environment. In this work, a marine pCO(2) monitoring system based on potentiometric sensing has been developed using real-time corrections for the salinity and temperature effects. The system consists of an electrochemical sensing unit based on an ion-selective electrode for selective carbonate detection, probes for seawater parameters (i.e., pH, salinity, and temperature), and a control system for autonomous sample analysis, sensor calibration, and pCO(2) calculation. The proposed sensing device offers a response time of about 22 s (t(95%)), a detection accuracy of <2 mu atm (mean deviation compared to the used standard CO2 gases), and a stability of 1.43% (mean relative standard deviation for the repeated measurements of the Tris-HCl buffer solutions equilibrated with different standard gases at pCO(2) levels of 450, 600, and 800 mu atm) for the real-time monitoring of pCO(2). The functioning of the marine pCO(2) monitoring system was validated via two different monitoring approaches (i.e., monitoring one site with a fixed duration and monitoring different sites in one sea region) in two different sea areas of China. The obtained results indicate the capability of the proposed pCO(2) monitoring system to autonomously operate for routine in situ monitoring in terms of sampling, detection, calibration, data storage, and transmission. The proposed electrochemical sensing system can be used for submersible and shipboard monitoring of oceanic pCO(2).
WOS关键词ION-SELECTIVE ELECTRODES ; PARTIAL-PRESSURE ; CARBONIC-ACID ; SEAWATER ; CO2 ; DISSOCIATION ; SEA ; CONSTANTS ; SALINITY ; IMPACT
WOS研究方向Chemistry ; Geochemistry & Geophysics
语种英语
WOS记录号WOS:001141287900001
资助机构Key Technology Research and Development Program of Shandong Province ; National Natural Science Foundation of China ; Key Deployment Project of Centre for Ocean Mega-Research of Science, Chinese Academy of Sciences ; National Key Research and Development Program of China ; Taishan Scholar Program of Shandong Province ; Science and Technology Project of Yantai City ; Key R&D Program of Shandong Province, China ; Youth Innovation Promotion Association of Chinese Academy of Sciences
源URL[http://ir.yic.ac.cn/handle/133337/34356]  
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
海岸带生物学与生物资源利用重点实验室
通讯作者Jiang, Tianjia; Qin, Wei
作者单位1.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Shandong, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao 266237, Shandong, Peoples R China
3.Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Shandong Key Lab Coastal Environm Proc, Yantai 264003, Shandong, Peoples R China
推荐引用方式
GB/T 7714		 Liao, Zhibo,Jiang, Tianjia,Qin, Wei. Electrochemical Sensing System for Rapid In Situ Monitoring of Oceanic pCO2[J]. ACS EARTH AND SPACE CHEMISTRY,2023,7(11):2182-2189.
APA Liao, Zhibo,Jiang, Tianjia,&Qin, Wei.(2023).Electrochemical Sensing System for Rapid In Situ Monitoring of Oceanic pCO2.ACS EARTH AND SPACE CHEMISTRY,7(11),2182-2189.
MLA Liao, Zhibo,et al."Electrochemical Sensing System for Rapid In Situ Monitoring of Oceanic pCO2".ACS EARTH AND SPACE CHEMISTRY 7.11(2023):2182-2189.

入库方式： OAI收割

来源：烟台海岸带研究所

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