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OA北大核心CSTPCD
Development of an Electrochemical Sensing System for Simultaneous Detection of Species Relevant to Carbon Cycle in Seawater
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NiCo2S4 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(Ca2+)、碳酸根离子(CO32-)和pH值的同时测定.此分析系统检测海水基体中Ca2+和CO32-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.,Ca2+,CO32-and pH)in seawater was developed,in which a highly sensitive polymeric membrane ion-selective electrode array with NiCo2S4-based transduction layer was used as the core element.Such an electrochemical sensor array was developed via the combination of all-solid-state ion selective electrode 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 Ca2+,CO32-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.
刘晓琳;廖志博;韩京龙;江天甲;秦伟
烟台大学环境与材料工程学院,烟台 264005||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烟台大学环境与材料工程学院,烟台 264005康复大学康复科学与工程学院,青岛 266113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||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||中国科学院海洋大科学研究中心,青岛 266071
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
Electrochemical sensorSpecies relevant to the carbon cycleSeawater analysisMulti-parameter detectionPolymeric membrane ion-selective electrode
《分析化学》 2024 (005)
645-652 / 8
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)和烟台市科技计划项目(No.2022MSGY065)资助. Supported by the National Natural Science Foundation of China(No.U2006208),the Taishan Scholar Program of Shandong Province(No.TSPD20181215),the Key Deployment Project of Centre for Ocean Mega-Research of Science,Chinese Academy of Sciences(No.COMS2020J06),the Youth Innovation Promotion Association of Chinese Academy of Sciences(No.2023221),and the Science and Technology Project of Yantai City(No.2022MSGY065).
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