Research on the construction of portable electrochemical sensors for environmental

The environment is important for human survival, but because of everyday human activities, many pollutants in the drinking water, food and environment may increasingly contribute to the problem of environmental contamination and pose a significant threat to human health. Therefore, the fast and effective monitoring of environmental compound concentrations in environmental samples is required. Electrochemical sensors offer huge potential for online monitoring of specific pollutants in complex environments, owing to their high sensitivity, good selectivity, low cost, simple operation, and high accuracy. This has made them a hot topic. Furthermore, with development of portable electronic tech-nology, the portable electrochemical sensing system with miniaturization has booming in many fields. Therefore, this paper systematically reviews a variety of portable electrochemical sensors that are used for the analysis of pollutants in the environment, and summarizes the current research direction. This is expected to provide researchers with new research ideas and perspectives.(c) 2022 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

Automated summary

The environment is crucial for human survival, but human activities have led to increasing pollutants in drinking water, food, and the environment, posing a significant threat to human health. Therefore, there is a need for fast and effective monitoring of environmental compound concentrations in samples. Electrochemical sensors have great potential for online monitoring of specific pollutants in complex environments due to their high sensitivity, selectivity, low cost, simplicity, and accuracy, making them a hot research topic. With the development of portable electronic technology, portable electrochemical sensing systems have seen significant growth in various fields. This paper provides a systematic review of portable electrochemical sensors used for environmental pollutant analysis and summarizes the current research direction, aiming to inspire researchers with new ideas and perspectives.