| Issue |
E3S Web Conf.
Volume 252, 2021
2021 International Conference on Power Grid System and Green Energy (PGSGE 2021)
|
|
|---|---|---|
| Article Number | 02063 | |
| Number of page(s) | 4 | |
| Section | Research and Development of Electrical Equipment and Energy Nuclear Power Devices | |
| DOI | https://doi.org/10.1051/e3sconf/202125202063 | |
| Published online | 23 April 2021 | |
Rapid in situ determination of ClO2 in drinking water by improved solid DPD spectrophotometry
1 School of Ecology and Environment, Zhengzhou University, Zhengzhou, Henan, China
1 School of Ecology and Environment, Zhengzhou University, Zhengzhou, Henan, China
2 Zhengzhou Guanao Instrument Co., Ltd, Zhengzhou, Henan, China
3 School of Hydraulic Science and Engineering, Zhengzhou University, Zhengzhou, Henan, China
a email: zqq1524978@163.com
b email: jlj54254586@163.com
c email: 1410145921@qq.com
D email: zengke@zzu.edu.cn
* Corresponding author:
This research aims to realize the rapid detection of ClO2 content in drinking water by adopting improved solid DPD. This method is fast and convenient with low cost and less waste liquid. The results show that this method has good precision and sensitivity. The linear correlation coefficients of the cubic regression equation were all greater than 0.999. The detection limit of the method was 0.002mg/L ClO2. The relative standard deviations (RSD) of seven parallel tests were between 1.37% and 8.87%, and the relative errors were small. The recovery rate was 96.67~110%. The method could be used for the direct determination of water samples with a mass concentration of 0.02mg/L~2.00mg/L in drinking water after ClO2 disinfection.
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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