Jump to main content
Jump to site search

Issue 9, 2020
Previous Article Next Article

Detecting hydrogen peroxide reliably in water via ion chromatography: a method evaluation update and comparison in the presence of interfering components

Author affiliations

Abstract

Hydrogen peroxide (H2O2) is an oxidant/additive widely used in water oxidation processes but not commonly detected due to lack of reliable analytical methods in faces of complex water matrixes. In this study, we made an evaluation update and compared the performances of a recently established analytical method, which uses ion chromatography (IC), with a conventional spectrophotometric method on detecting H2O2 under various water conditions. The results indicated that the IC method has a wider calibration scope (0.01–10.0 mg L−1, R2 ≥ 0.998), more consistent slopes (≤2.4% variation), and a lower method detection limit (2.1 μg L−1) than the colorimetric method (0.03–10.0 mg L−1, R2 ≥ 0.987, ≤14.4% variation, and 16.4 μg L−1). More importantly, the IC method was less subject to interferences from varying reaction time and dissolved oxygen, nitrite, ferric ions, and humic acid contents, thus demonstrating its superiority over the conventional colorimetric method in face of coexisting interferents. Although the IC method has certain drawbacks, such as inconvenience for field use, underestimation of data at pH ≥ 12.4, and IC column clogging by precipitative cations, they can generally be overcome by sample pretreatment and hand-held IC. Partially due to the formation of nitrite, the colorimetric method obtained higher H2O2 values than the IC method from a real tap water photolyzed by ultraviolet (UV), vacuum UV, and UV activated H2O2, thus highlighting the importance of choosing an appropriate method to obtain a reasonable trend. The evaluation and comparison of the two H2O2 analytical methods may help facilitate their applications in different operational and environmental conditions.

Graphical abstract: Detecting hydrogen peroxide reliably in water via ion chromatography: a method evaluation update and comparison in the presence of interfering components

Back to tab navigation

Supplementary files

Article information


Submitted
18 Mar 2020
Accepted
10 Jun 2020
First published
11 Jun 2020

Environ. Sci.: Water Res. Technol., 2020,6, 2396-2404
Article type
Paper

Detecting hydrogen peroxide reliably in water via ion chromatography: a method evaluation update and comparison in the presence of interfering components

Y. Huang, L. Wang, B. Chen, Q. Zhang and R. Zhu, Environ. Sci.: Water Res. Technol., 2020, 6, 2396 DOI: 10.1039/D0EW00234H

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.


Social activity

Search articles by author

Spotlight

Advertisements