Portable Multi-Channel Electrochemical Device with Good Interaction and Wireless Connection for On-Site Testing

It is very important to rapidly test the key indicators of water in the field to fully evaluate the quality of the regional water environment. However, a high-resolution measuring device that can generate small currents for low-concentration analytes in water samples is often bulky, complex to opera...

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Bibliographic Details
Published inMicromachines (Basel) Vol. 14; no. 1; p. 142
Main Authors Xu, Yifei, Ning, Haohao, Yu, Shixin, Liu, Shikun, Zhang, Yan, Niu, Chunyan, Zhang, Yongzhuo, Low, Sze Shin, Liu, Jingjing
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 05.01.2023
MDPI
Subjects
Analytical chemistry
cloud processing
Data transmission
Design
Electrodes
High resolution
Internet of Things
Low currents
Measuring instruments
Narrowband Internet of Things
on-site testing
Onsite
portable
Portable equipment
Power
Remote searching
User interface
Voltammetry
Water quality
Water sampling
Websites
Wireless communications
on-site testing
portable
cloud processing
Narrowband Internet of Things
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Summary:It is very important to rapidly test the key indicators of water in the field to fully evaluate the quality of the regional water environment. However, a high-resolution measuring device that can generate small currents for low-concentration analytes in water samples is often bulky, complex to operate, and difficult for data sharing. This work introduces a portable multi-channel electrochemical device with a small volume, good interaction, and data-sharing capabilities called PMCED. The PMCED provides an easy-to-operate graphical interactive interface to conveniently set the parameters for cyclic voltammetry or a differential pulse method performed by the four electrode channels. At the same time, the device, with a current sensitivity of 100 nA V , was applied to the detection of water samples with high background current and achieved a high-resolution measurement at low current levels. The PMCED uses the Narrow Band Internet of Things (NB-IoT) to meet the needs for uploading data to the cloud in remote areas. The electrochemical signal preprocessing and chemometrics models run in the cloud, and the final results are visualized on a web page, providing a remote access channel for on-site testing results.
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ISSN:2072-666X
2072-666X
DOI:10.3390/mi14010142