Sensing Techniques on Determination of Chlorine Gas and Free Chlorine in Water

Autor: Nurjahirah Janudin, Noor Azilah Mohd Kasim, Victor Feizal Knight, Norhana Abdul Halim, Siti Aminah Mohd Noor, Keat Khim Ong, Wan Md Zin Wan Yunus, Mohd Nor Faiz Norrrahim, Muhammad Syukri Mohamad Misenan, Mas Amira Idayu Abdul Razak, Muhammad Zamharir Ahmad, Mohd Hanif Yaacob
Rok vydání: 2022
Předmět:
Zdroj: Journal of Sensors. 2022:1-27
ISSN: 1687-7268
1687-725X
DOI: 10.1155/2022/1898417
Popis: Chlorine gas is a greenish-yellow gas that is one of the most utilized gases in numerous industrial fields. It has been categorized as a choking agent that can threaten human, animal, and environmental safety. Currently, development of highly sensitive, selective, and precise chlorine sensors receives much attention. This review focuses on several sensing techniques used for chlorine gas and free chlorine in water. The fundamental working principles, as well as the sensing mechanisms of chlorine detection covering spectrophotometric, electrochemical, and optical techniques, are described. A comparison of various sensing materials is also discussed. Finally, an overview of the future improvements needed of high-performance chlorine sensors was suggested.
Databáze: OpenAIRE
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