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Optical measurements of dissolved organic matter as proxies for CODMn and BOD₅ in plateau lakes

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dc.contributor.authorYang, X.
dc.contributor.authorZhou, Y.
dc.contributor.authorYang, X.
dc.contributor.authorZhang, Y.
dc.contributor.authorSpencer, R.G.M.
dc.contributor.authorBrookes, J.D.
dc.contributor.authorJeppesen, E.
dc.contributor.authorZhang, H.
dc.contributor.authorZhou, Q.
dc.date.issued2024
dc.descriptionAn update to this article is included at the end. Corrected by: Corrigendum to “Optical measurements of dissolved organic matter as proxies for CODMn and BOD₅ in plateau lakes” [Environ. Sci. Ecotech. 19 (2024) 100326], in Environmental Science and Ecotechnology, Volume 20, July 2024, 100426. The authors regret that the following statements in the original article were wrong and have been corrected. The authors would like to apologise for any inconvenience caused.
dc.description.abstractThe presence of organic matter in lakes profoundly impacts drinking water supplies, yet treatment processes involving coagulants and disinfectants can yield carcinogenic disinfection by-products. Traditional assessments of organic matter, such as chemical oxygen demand (CODMn) and biochemical oxygen demand (BOD5), are often time-consuming. Alternatively, optical measurements of dissolved organic matter (DOM) offer a rapid and reliable means of obtaining organic matter composition data. Here we employed DOM optical measurements in conjunction with parallel factor analysis to scrutinize CODMn and BOD5 variability. Validation was performed using an independent dataset encompassing six lakes on the Yungui Plateau from 2014 to 2016 (n ¼ 256). Leveraging multiple linear regressions (MLRs) applied to DOM absorbance at 254 nm (a254) and fluorescence components C1eC5, we successfully traced CODMn and BOD5 variations across the entire plateau (68 lakes, n ¼ 271, R2 > 0.8, P < 0.0001). Notably, DOM optical indices yielded superior estimates (higher R2) of CODMn and BOD5 during the rainy season compared to the dry season and demonstrated increased accuracy (R2 > 0.9) in mesotrophic lakes compared to oligotrophic and eutrophic lakes. This study underscores the utility of MLR-based DOM indices for inferring CODMn and BOD5 variability in plateau lakes and highlights the potential of integrating in situ and remote sensing platforms for water pollution early warning.
dc.description.statementofresponsibilityXuan Yang, Yongqiang Zhou, Xiaoying Yang, Yunlin Zhang, Robert G.M. Spencer, Justin D. Brookes, Erik Jeppesen, Hucai Zhang, Qichao Zhou
dc.identifier.citationEnvironmental Science and Ecotechnology, 2024; 19:100326-1-100326-9
dc.identifier.doi10.1016/j.ese.2023.100326
dc.identifier.issn2666-4984
dc.identifier.issn2666-4984
dc.identifier.orcidBrookes, J.D. [0000-0001-8408-9142]
dc.identifier.urihttps://hdl.handle.net/2440/143101
dc.language.isoen
dc.publisherElsevier BV
dc.rights© 2023 The Authors. Published by Elsevier B.V. on behalf of Chinese Society for Environmental Sciences, Harbin Institute of Technology, Chinese Research Academy of Environmental Sciences. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
dc.source.urihttp://dx.doi.org/10.1016/j.ese.2023.100326
dc.subjectDissolved organic matter; Chemical oxygen demand; Biochemical oxygen demand; Water quality; Yungui plateau lakes
dc.titleOptical measurements of dissolved organic matter as proxies for CODMn and BOD₅ in plateau lakes
dc.title.alternativeOptical measurements of dissolved organic matter as proxies for CODMn and BOD5 in plateau lakes
dc.typeJournal article
pubs.publication-statusPublished

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