Unraveling the interaction of dissolved organic matter and microorganisms with internal phosphorus cycling in the floodplain lake ecosystem

Environmental Research, Journal Year: 2025, Volume and Issue: unknown, P. 120966 - 120966

Published: Jan. 1, 2025

Language: Английский

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High biodegradability of microbially-derived dissolved organic matter facilitates arsenic enrichment in groundwater: Evidence from molecular compositions and structures

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 470, P. 134133 - 134133

Published: March 27, 2024

Language: Английский

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

Water Research, Journal Year: 2023, Volume and Issue: 250, P. 121025 - 121025

Published: Dec. 16, 2023

Language: 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, Journal Year: 2023, Volume and Issue: 57(45), P. 17427 - 17438

Published: Sept. 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.

Language: 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, Journal Year: 2024, Volume and Issue: 264, P. 122215 - 122215

Published: Aug. 6, 2024

Language: Английский

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Unraveling the fate of phosphorus in alluvial aquifers of the middle-lower Yellow River: Coupled natural and anthropogenic impacts

Journal of Contaminant Hydrology, Journal Year: 2025, Volume and Issue: unknown, P. 104551 - 104551

Published: March 1, 2025

Language: Английский

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Carbon Isotopic Signatures of Aquifer Organic Molecules along Anthropogenic Recharge Gradients

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: April 7, 2025

The property of groundwater dissolved organic matter (DOM) subjected to anthropogenic recharge (AGR) might be affected by the water quality disparity between surface and natural groundwater. However, diverse molecular scenarios DOM under uneven recharging levels remain largely unexplored. We combined characteristics, carbon isotopic signatures molecules, end-member mixing analysis explore sensitivity potential tracking capabilities AGR along with gradients. Our findings suggested that enriched diverse, saturated, labile, sulfur-rich amplifying abundance intensity, which intensified Additionally, S-containing molecules their indicators like CHOS% (with threshold values 7.82%) exhibited high predictive power for recognition. major (diversity, saturated degree, stability) indicated 13C-containing were similar whole pool. Notably, specific (C12H10O5S C15H16O12), although not detected in all samples, exhibit robust stability or favorable solubility, rendering them candidates as AGR-sensitive molecules. R13C/12C ratio C19H24O5 emerged most tracer, exhibiting a strong correlation smallest deviation from theoretical line, signifying its optimal suitability precise source apportionment. This study offers novel insights into impacts contributes fostering harmonious balance human activities resource sustainability.

Language: Английский

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Interactions between dissolved organic matter composition and microbial communities in runoff from biocrust-colonized slopes on the Loess Plateau of China

Journal of Hydrology Regional Studies, Journal Year: 2025, Volume and Issue: 59, P. 102411 - 102411

Published: April 22, 2025

Language: Английский

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Identification of methane cycling pathways in Quaternary alluvial-lacustrine aquifers using multiple isotope and microbial indicators

Water Research, Journal Year: 2023, Volume and Issue: 250, P. 121027 - 121027

Published: Dec. 16, 2023

Language: Английский

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Understanding spatial heterogeneity of groundwater arsenic concentrations at a field scale: Taking the Datong Basin as an example to explore the significance of hydrogeological factors

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 352, P. 120112 - 120112

Published: Jan. 19, 2024

Language: Английский

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