Quantifying Hypochlorous Acid Concentration in Environmental Water Using Smartphone Colorimetry  

作　　者：Shuai He Hui Dong Yuanqiang Hao Yintang Zhang Yanli Zhou Fangyuan Zhang Jie Li Yingying Jia Guoqing Xiao Maotian Xu 

机构地区：[1]College of Materials Science and Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China [2]Henan Key Laboratory of Biomolecular Recognition and Sensing,College of Chemistry and Chemical Engineering,Henan Joint International Research Laboratory of Chemo/Biosensing and Early Diagnosis of Major Diseases,Shangqiu Normal University,Shangqiu 476000,China

出　　处：《Journal of Analysis and Testing》2021年第4期360-369,共10页分析检测（英文）

基　　金：the National Natural Science Foundation of China(Nos.U1404215,22074089,21804085,21675109);Innovation Scientists and Technicians Troop Construction Projects of Henan Province(No:41);Key Scientific Research Projects of Colleges and Universities in Henan Province(No:21A150043)for support。

摘　　要：In this study,we developed an eff ective method to detect hypochlorite acid(HClO)by using methylene blue(MB)derivative(BPY1).BPY1 was selectively oxidized through HClO,and the solution color changed from colorless to blue.In the presence of HClO,the ultraviolet–visible(UV–vis)spectra and concentration of HClO had a linear relationship with a detection limit of 0.5μM.Furthermore,a test paper for HClO monitoring was successfully prepared using the BPY1 probe,and the observed detection limit by the naked eye was estimated at 5μM.Additionally,using the BPY1 probe,HClO could also be detected through smartphone colorimetry,and the method showed a good recovery ranging from 98.7 to 104.0%for HClO detection in an actual water sample.Especially for developing countries,such a low-cost and highly sensitive detection method provides a simple and practical method for monitoring HClO in water.

关 键 词：Smartphone colorimetry RGB Test strips Hypochlorite acid Methylene blue 

分 类 号：O657.3[理学—分析化学] X832[理学—化学]