基于电化学传感的海水碳循环要素多参数同时检测系统的研制  

Development of an Electrochemical Sensing System for Simultaneous Detection of Species Relevant to Carbon Cycle in Seawater

作　　者：刘晓琳 廖志博[2] 韩京龙 江天甲[5] 秦伟 LIU Xiao-Lin;LIAO Zhi-Bo;HAN Jing-Long;JIANG Tian-Jia;QIN Wei(School of Environmental and Material Engineering,Yantai University,Yantai 264005,China;Shandong Key Laboratory of Coastal Environmental Processes,CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation,Yantai Institute of Coastal Zone Research,Chinese Academy of Sciences,Yantai 264003,China;Laboratory for Marine Biology and Biotechnology,Qingdao Marine Science and Technology Center,Qingdao 266237,China;Center for Ocean Mega-Science,Chinese Academy of Sciences,Qingdao 266071,China;School of Rehabilitation Sciences and Engineering,University of Health and Rehabilitation Sciences,Qingdao 266113,China)

机构地区：[1]烟台大学环境与材料工程学院,烟台264005 [2]中国科学院烟台海岸带研究所,中国科学院海岸带环境过程与生态修复重点实验室,山东省海岸带环境过程重点实验室,烟台264003 [3]青岛海洋科技中心海洋生物学与生物技术功能实验室,青岛266237 [4]中国科学院海洋大科学研究中心,青岛266071 [5]康复大学康复科学与工程学院,青岛266113

出　　处：《分析化学》2024年第5期645-652,共8页Chinese Journal of Analytical Chemistry

基　　金：国家自然科学基金项目(No.U2006208);山东省泰山学者项目(No.TSPD20181215);中国科学院海洋大科学研究中心重点部署项目(No.COMS2020J06);中国科学院青年创新促进会人才项目(No.2023221);烟台市科技计划项目(No.2022MSGY065)资助。

摘　　要：基于全固态聚合物膜离子选择性电极和丝网印刷技术,构建了以NiCo_(2)S_(4)材料为离子-电子转导层的芯片式全固态聚合物膜离子选择性电极阵列,并基于此研制了一种便携式海水碳循环要素同时分析系统,实现了对海水中钙离子(Ca^(2+))、碳酸根离子(CO_(3)^(2-))和pH值的同时测定。此分析系统检测海水基体中Ca^(2+)和CO_(3)^(2-)的线性响应浓度范围分别为1.0×10^(-5)~1.0×10^(-1) mol/L和3.2×10^(-5)~1.9×10^(-3) mol/L,检测pH值的线性范围为pH 5~9。本方法连续测定的相对标准偏差小于2.5%,单个样品全程分析时间少于15 min,测定结果和比测设备结果的相对偏差小于2.0%。此电化学传感器系统已成功应用于实际海水样品分析。A portable electrochemical sensing system for simultaneous detection of species relevant to carbon cycle(i.e.,Ca^(2+),CO_(3)^(2-)and pH)in seawater was developed,in which a highly sensitive polymeric membrane ionselective electrode array with NiCo_(2)S_(4)-based transduction layer was used as the core element.Such an electrochemical sensor array wasdeveloped via the combination of all-solid-state ion selectiveelectrode technology and electrode integration technology based on screen printing.The proposed sensing system offered the linear response concentration ranges of 1.0×10^(-5)–1.0×10^(-1) mol/L and 3.2×10^(-5)–1.9×10^(-3) mol/L for Ca^(2+),CO_(3)^(2-)and 5-9 for pH in 0.5 mol/L NaCl background,respectively,as well as a relative deviation of less than 2.0%for evaluation of detection accuracy(mean deviation compared to the readings of reference techniques).For successive measurements,the relative standard deviations(RSDs)of less than 2.5%were obtained.The proposed electrochemical sensing system was successfully used for seawater analysis,and the whole analysis process could be completed within 15 min.

关 键 词：电化学传感器 碳循环要素 海水分析 多参数检测 聚合物膜离子选择性电极 

分 类 号：X834[环境科学与工程—环境工程] O657.1[理学—分析化学]