Evidence map›Paper›PMID 38801537›Full record

ArticleMikrochimica acta2024

An integrated smartphone-based electrochemical detection system for highly sensitive and on-site detection of chemical oxygen demand by copper-cobalt bimetallic oxide-modified electrode.

Zhengrong Dong, Xu Zhu, Jing Tang, Yibo Liao, Xingyang Cheng, Lin Tang, Leyuan Fang

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Article in Mikrochimica acta, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

7 authors.

Zhengrong Dong *College of Electrical and Information Engineering, Hunan University, Changsha, 410012, China.
Xu Zhu *School of Environmental Science and Engineering, Tiangong University, Tianjin, 300387, China.
Jing TangCollege of Environmental Science and Engineering, Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha, 410082, China.
Yibo LiaoCollege of Environmental Science and Engineering, Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha, 410082, China.
Xingyang ChengCollege of Environmental Science and Engineering, Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha, 410082, China.
Lin TangCollege of Environmental Science and Engineering, Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha, 410082, China. tanglin@hnu.edu.cn.
Leyuan FangCollege of Electrical and Information Engineering, Hunan University, Changsha, 410012, China. leyuan_fang@hnu.edu.cn.

Funding

Key Research and Development Program of Hunan Province of China 2021SK2039Key Technologies Research and Development Program 2021YFC1910400National Natural Science Foundation of China 52100184National Natural Science Foundation of China No.U22A20617Natural Science Foundation of Hunan Province 2022JJ40080
6 · The paper itself

Abstract

A portable and integrated electrochemical detection system has been constructed for on-site and real-time detection of chemical oxygen demand (COD). The system mainly consists of four parts: (i) sensing electrode with a copper-cobalt bimetallic oxide (CuCoOx)-modified screen-printed electrode; (ii) an integrated electrochemical detector for the conversion, amplification, and transmission of weak signals; (iii) a smartphone installed with a self-developed Android application (APP) for issuing commands, receiving, and displaying detection results; and (iv) a 3D-printed microfluidic cell for the continuous input of water samples. Benefiting from the superior catalytic capability of CuCoOx, the developed system shows a high detection sensitivity with 0.335 μA/(mg/L) and a low detection limit of 5.957 mg/L for COD determination and possessing high anti-interference ability to chloride ions. Moreover, this system presents good consistency with the traditional dichromate method in COD detection of actual water samples. Due to the advantages of cost effectiveness, portability, and point-of-care testing, the system shows great potential for water quality monitoring, especially in resource-limited remote areas.

Indexed as

Chemical oxygen demand (COD)CuCoOxIntegrated electrochemical systemOn-site detectionSmartphone monitoring

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.