Membrane-based portable colorimetric gaseous chlorine sensing probe

Zhou, Ming, Li, Tianling, Xing, Chao, Liu, Yang, and Zhao, Huijun (2021) Membrane-based portable colorimetric gaseous chlorine sensing probe. Analytical Chemistry, 93 (2). pp. 769-776.

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Highly toxic chlorine gas imposes serious health risks in the workplace. The ability to on-site, real-time monitoring of instantaneous and time-weighted average (TWA) chlorine gas concentrations in a simple, sensitive, accurate, and reliable manner would be highly beneficial to improve workplace health and safety. Here, we propose and experimentally validate a gaseous chlorine detection principle based on a N,N-diethyl-p-phenylenediamine sulfate salt/Cl2 colorimetric reaction-controlled membrane process to regulate the gaseous chlorine transport across a gas-permeable membrane that enables the establishment of a time-resolved analytical relationship to quantify chlorine concentration by multidata points with dramatically enhanced accuracy and reliability. A gas-permeable membrane-based portable colorimetric gaseous chlorine sensing probe (MCSP) was designed and fabricated. The MCSP embedded the proposed analytical principle that is capable of real-time continuous monitoring of the instantaneous and TWA chlorine gas concentrations within an analytical range of 0.009–2.058 mg L–1 without the need for on-going calibration, which could be a useful analytical tool for managing the toxic chlorine gas-imposed health risks in workplaces.

Item ID: 65340
Item Type: Article (Research - C1)
ISSN: 1520-6882
Copyright Information: (C) American Chemical Society
Funders: Griffith University, Australian Research Council (ARC), National Natural Science Foundation of China (NNSFC)
Projects and Grants: NNSFC 21806080
Date Deposited: 17 Dec 2020 02:04
FoR Codes: 34 CHEMICAL SCIENCES > 3401 Analytical chemistry > 340101 Analytical spectrometry @ 40%
34 CHEMICAL SCIENCES > 3401 Analytical chemistry > 340108 Sensor technology (incl. chemical aspects) @ 60%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970103 Expanding Knowledge in the Chemical Sciences @ 40%
86 MANUFACTURING > 8615 Instrumentation > 861503 Scientific Instruments @ 60%
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