Characteristics of dissolved organic matter contribute to Geogenic ammonium enrichment in coastal versus alluvial-lacustrine aquifers

Water Research, Год журнала: 2023, Номер 250, С. 121025 - 121025

Опубликована: Дек. 16, 2023

Язык: Английский

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Enrichment of Geogenic Organoiodine Compounds in Alluvial-Lacustrine Aquifers: Molecular Constraints by Organic Matter

Environmental Science & Technology, Год журнала: 2024, Номер 58(13), С. 5932 - 5941

Опубликована: Март 19, 2024

Organoiodine compounds (OICs) are the dominant iodine species in groundwater systems. However, molecular mechanisms underlying geochemical formation of geogenic OICs-contaminated remain unclear. Based upon multitarget field monitoring combination with ultrahigh-resolution characterization organic components for alluvial-lacustrine aquifers, we identified a total 939 OICs under reducing and circumneutral pH conditions. In comparison to those water-soluble matter (WSOM) sediments, dissolved (DOM) typically contain fewer polycyclic aromatics polyphenol but more highly unsaturated compounds. Consequently, there were two major sources groundwater: migration from aquifer sediments abiotic reduction iodate coupled DOM iodination occurs primarily through incorporation reactive that is generated by into compounds, preferably containing hydrophilic functional groups as binding sites. It leads elevation concentration up 183 μg/L groundwater. This research provides new insights constraints composition on mobilization enrichment aquifers thus improves our understanding genesis iodine-contaminated

Язык: Английский

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Determination of high-risk factors and related spatially influencing variables of heavy metals in groundwater

Journal of Environmental Management, Год журнала: 2024, Номер 358, С. 120853 - 120853

Опубликована: Апрель 11, 2024

Язык: Английский

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Mechanisms controlling spatial variability of geogenic ammonium in coastal aquifers: Insights from Holocene sedimentary evolution

Water Research, Год журнала: 2025, Номер 274, С. 123124 - 123124

Опубликована: Янв. 10, 2025

Язык: Английский

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Insights into the Spectral Characteristics and Sources of Dissolved Organic Matter in a Water Supply Reservoir

Bulletin of Environmental Contamination and Toxicology, Год журнала: 2025, Номер 114(2)

Опубликована: Янв. 20, 2025

Язык: Английский

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Coupled Processes Involving Organic Matter and Fe Oxyhydroxides Control Geogenic Phosphorus Enrichment in Groundwater Systems: New Evidence from FT-ICR-MS and XANES

Environmental Science & Technology, Год журнала: 2023, Номер 57(45), С. 17427 - 17438

Опубликована: Сен. 12, 2023

The enrichment of geogenic phosphorus (P) in groundwater systems threatens environmental and public health worldwide. Two significant factors affecting P include organic matter (OM) Fe (oxyhydr)oxide (FeOOH). However, due to variable reactivities OM FeOOH, strategies their coupled influence controlling remain elusive. This research reveals that when the depositional environment is enriched more labile aliphatic OM, its fermentation with reductive dissolution both amorphous crystalline FeOOHs. When recalcitrant aromatic it largely relies on FeOOH acting concurrently as electron acceptors while serving "conduits" help itself stimulate degradation methanogenesis. main source by these two different processes different: former P-containing which mainly contained unsaturated compounds highly unsaturated-low O compounds, latter associated FeOOH. In addition, geological setting affects deposition rate sediments, can alter degradation/preservation, subsequently geochemical conditions occurrence. These findings provide new evidence perspectives for understanding hydro(bio)geochemical alluvial-lacustrine aquifer systems.

Язык: Английский

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Predicting geogenic groundwater arsenic contamination risk in floodplains using interpretable machine-learning model

Environmental Pollution, Год журнала: 2023, Номер 340, С. 122787 - 122787

Опубликована: Окт. 23, 2023

Язык: Английский

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Co-occurring characteristics and mechanisms of geogenic ammonium and phosphorus in Quaternary alluvial-lacustrine aquifer systems

Journal of Hydrology, Год журнала: 2024, Номер 638, С. 131444 - 131444

Опубликована: Июнь 1, 2024

Язык: Английский

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Revealing Degradation Pathways of Soluble and Dissolved Organic Matter in Alluvial-Lacustrine Aquifer Systems Impacted by High Levels of Geogenic Ammonium

Water Research, Год журнала: 2024, Номер 264, С. 122215 - 122215

Опубликована: Авг. 6, 2024

Язык: Английский

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Effect of depositional evolution on phosphorus enrichment in aquifer sediments of alluvial-lacustrine plain

The Science of The Total Environment, Год журнала: 2023, Номер 900, С. 165857 - 165857

Опубликована: Июль 27, 2023

Язык: Английский

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