Dissolved organic matters with low molecular weight fractions exhibit high photochemical potential for reactive oxygen formation

The photochemical properties of dissolved organic matter (DOM) were highly related to the molecular weight (MW) and organic compositions. In this study, the bulk algae- and macrophyte-derived DOM (ADOM and MDOM, respectively) and Suwannee River humic acid (SRHA) were applied and fractionated into lo...

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Bibliographic Details
Published in:Chemosphere (Oxford) 2022-10, Vol.305, p.135542-135542, Article 135542
Main Authors: Xu, Huacheng, Li, Xiaoming, Guo, Mengjing, Li, Fangfang, Yang, Keli, Liu, Xin
Format: Article
Language:English
Subjects:
Dissolved organic matter
FT-ICR-MS
Molecular weight
Photochemical formation
Reactive oxygen
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Summary:The photochemical properties of dissolved organic matter (DOM) were highly related to the molecular weight (MW) and organic compositions. In this study, the bulk algae- and macrophyte-derived DOM (ADOM and MDOM, respectively) and Suwannee River humic acid (SRHA) were applied and fractionated into low MW- (LMW,  Bulk- > HMW-fraction.•Humic-/fulvic- and protein-/lipid-derived moieties accounted for high RPPRI and ФPPRI.
ISSN:0045-6535
1879-1298
DOI:10.1016/j.chemosphere.2022.135542