Development of an Electrochemical Sensing System for Simultaneous Detection of Species Relevant to Carbon Cycle in Seawater
10.19756/j.issn.0253-3820.231473
- VernacularTitle: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
- Author:
Xiao-Lin LIU
1
;
Zhi-Bo LIAO
;
Jing-Long HAN
;
Tian-Jia JIANG
;
Wei QIN
Author Information
1. 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
- Keywords:
Electrochemical sensor;
Species relevant to the carbon cycle;
Seawater analysis;
Multi-parameter detection;
Polymeric membrane ion-selective electrode
- From:
Chinese Journal of Analytical Chemistry
2024;52(5):645-652
- CountryChina
- Language:Chinese
-
Abstract:
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.
