Multiplex Analysis of Fundamental Surface Water Quality Indicators by Multichannel Electrochemical Device Combined With MFCSC Model

Liu, Jingjing; Xu, Yifei; Liu, Mi; Low, Sze Shin; Zhan, Hang; Liu, Shikun; Ning, Haohao; Xu, Dianguo; Fang, Hairui; Liu, Qingjun

doi:10.1109/jsen.2022.3227195

Cited by 6 publications

(2 citation statements)

References 37 publications

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“…The PMCED was used to test water samples at different locations in Jilin, China, and test data from 18 water samples were obtained. The water sample was detected using the electrode array formed by the screen-printed electrode modified with nanomaterials [ 33 ]. This sensor array consists of gold nanoparticles (AuNPs), silver nanodendritic structures (AgNDs), and reduced graphene oxide (rGO)-modified screen-printed electrodes (SPEs).…”

Section: Resultsmentioning

confidence: 99%

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

Ning

et al. 2023

Micromachines

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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−1, 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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Section: Resultsmentioning

confidence: 99%

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

Ning

et al. 2023

Micromachines

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“…[41,42] For water quality analysis, Liu et al developed voltametric data fingerprints by multiple electrodes with different materials to distinguish each analyte, when there is an overlapping in the voltametric curves of a single electrode. [43] Our multiplex method uses CA to accumulate and enhance current signals obtained at different potentials on multiple electrodes to generate a unique pattern for a particular sample and its matrices. Developing a database library of these patterns will help identify the analytes and sample properties.…”

Section: Comparison Between Mixture and Pure Fe 2+ Solutionmentioning

confidence: 99%

Electrochemical interference study of manganese and iron by multiplex method and the application for manganese analysis in drinking water

Shi,

Pei,

Lamothe

et al. 2023

Electrochemical Science Adv

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Manganese is an emerging concern in drinking water, due to its potential health and aesthetic effects. Although accurate and sensitive, spectroscopic techniques for Mn2+ detection are costly and not capable of rapid detection. Electrochemical methods, such as cathodic stripping voltammetry, have been intensively explored as portable low‐cost methods for Mn2+ detection. Challenges of reliability and matrix interference are difficult to overcome with current electrochemical methods. Among the interference reagents, Fe2+ is one of the biggest challenges for Mn2+ detection. Herein, a new method based on multiplex chronoamperometry at potentials between 0.9 and 1.4 V by a multichannel potentiostat is explored for its ability for interference resistance and applicability for Mn2+ detection in real drinking water samples. Compared to conventional one‐channel electrochemical techniques, the multiplex method generates a reliable pattern that is unique to the sample components. The interference between Mn2+ and Fe2+ is investigated and the results are promising even at 100:1 Fe2+:Mn2+ concentrations. The detection limit determined for the multiplex method was 25.3 μM, and the optimum recovery rate in a real drinking water sample was 99.8%.

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A fused convolutional transformer for voltammetric electronic tongue analysis tasks

Liu,

Li,

et al. 2024

Journal of Environmental Chemical Engineering

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Multiplex Analysis of Fundamental Surface Water Quality Indicators by Multichannel Electrochemical Device Combined With MFCSC Model

Cited by 6 publications

References 37 publications

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

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

Electrochemical interference study of manganese and iron by multiplex method and the application for manganese analysis in drinking water

A fused convolutional transformer for voltammetric electronic tongue analysis tasks

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