Centre for Clean Environment and Energy, Griffith University, Gold Coast, QLD 4215, Australia.
Collaborative Innovation Centre of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing, Jiangsu 210044, P. R. China.
Anal Chem. 2021 Jan 19;93(2):769-776. doi: 10.1021/acs.analchem.0c02997. Epub 2020 Dec 15.
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 ,-diethyl--phenylenediamine sulfate salt/Cl 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 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.
高毒性氯气在工作场所会带来严重的健康风险。能够以简单、灵敏、准确和可靠的方式现场实时监测瞬时和时间加权平均（TWA）氯气浓度，将非常有助于改善工作场所的健康和安全。在这里，我们提出并实验验证了一种基于 -二乙基-对苯二胺硫酸盐盐/Cl 比色反应控制膜过程的气态氯气检测原理，该原理可调节气态氯气通过透气膜的传输，从而建立时间分辨分析关系，通过多点多数据极大地提高准确性和可靠性来定量氯气浓度。设计并制造了一种基于透气膜的便携式比色气态氯气传感探头（MCSP）。该 MCSP 嵌入了所提出的分析原理，能够在 0.009-2.058mg/L 的分析范围内实时连续监测瞬时和 TWA 氯气浓度，而无需持续校准，这可能是管理工作场所有毒氯气带来的健康风险的有用分析工具。
