Ammonium enrichment, nitrate attenuation and nitrous oxide production along groundwater flow paths: Carbon isotopic and DOM optical evidence

Journal of Hydrology, Год журнала: 2024, Номер 632, С. 130943 - 130943

Опубликована: Фев. 27, 2024

Язык: Английский

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Marine Recalcitrant Dissolved Organic Matter Gained by Processing at Sandy Subterranean Estuaries

Environmental Science & Technology, Год журнала: 2025, Номер unknown

Опубликована: Фев. 13, 2025

The sandy subterranean estuary (STE) connecting fresh groundwater to saline sea water is characterized by strong geochemical (salinity, redox, and pH) gradients, with evidence emerging for its role as a hot spot consumption of labile substrates. This inspired us conduct study evaluate whether this holds true dissolved organic matter (DOM), especially given the still mysterious origin marine recalcitrant DOM. Here, characterization DOM 21 samples (depth 1-13 m, salinity 3.9‰ 32.4‰) across 65 m transect an STE located in coastal Guangdong, China, has found systematic biotransformation toward "recalcitrant" carboxyl-rich alicyclic molecules (CRAM). fraction CRAM (%CRAM) increases from 33.1% 76.7% increasing degree degradation salinity. Further, processing DOM, including more "biolabile" lower %CRAM released aquitard, active under oxic conditions than reducing conditions. Given large quantities that recirculates through STEs globally, amount (RDOM) entering ocean after likely be considerable. While studies are needed, can gain CRAM-like compounds way.

Язык: Английский

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Molecular characteristics of dissolved organic phosphorus in watershed runoff: Coupled influences of land use and precipitation

Journal of Environmental Sciences, Год журнала: 2024, Номер 148, С. 387 - 398

Опубликована: Фев. 1, 2024

Язык: Английский

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Long-term and seasonal evaluation on environmental microbiology and water quality of Shanmei reservoir in southeast China

Environmental Pollution, Год журнала: 2025, Номер unknown, С. 125650 - 125650

Опубликована: Янв. 1, 2025

Язык: Английский

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Degradation of phosphorus-containing natural organic matter facilitates enrichment of geogenic phosphorus in Quaternary aquifer systems: A molecular perspective

Journal of Hydrology, Год журнала: 2023, Номер 620, С. 129513 - 129513

Опубликована: Апрель 12, 2023

Язык: Английский

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Characteristics and mechanism of phosphate removal by lanthanum modified bentonite in the presence of dissolved organic matter

Chemosphere, Год журнала: 2023, Номер 340, С. 139957 - 139957

Опубликована: Авг. 24, 2023

Язык: Английский

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

Water Research, Год журнала: 2023, Номер 250, С. 121027 - 121027

Опубликована: Дек. 16, 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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Quantification of groundwater-borne greenhouse gases (CH4, CO2, N2O) fluxes to an oxbow lake in a subtropical alluvial-lacustrine plain

Applied Geochemistry, Год журнала: 2023, Номер 155, С. 105743 - 105743

Опубликована: Июль 14, 2023

Язык: Английский

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Relationship Between Algal Bloom and Phosphorus in Water Environment in Zhushan Bay, Taihu Lake

Water Air & Soil Pollution, Год журнала: 2024, Номер 235(1)

Опубликована: Янв. 1, 2024

Язык: Английский

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