Insight into the characterization of dissolved organic matter in shallow lakes with different trophic states and their net photo-generation capacity of reactive oxygen species

Water Research, Год журнала: 2025, Номер unknown, С. 123204 - 123204

Опубликована: Янв. 1, 2025

Язык: Английский

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Environmental Drivers of Monomethylmercury Photodegradation along the Land-to-Ocean Aquatic Continuum

Environmental Science Processes & Impacts, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

In surface waters, photodegradation is a major abiotic removal pathway of the neurotoxin monomethylmercury (MMHg), acting as key control on amounts MMHg available for biological uptake. Different environmental factors can alter rate photodegradation. However, our understanding how pathways in complex matrixes along land-to-ocean aquatic continuum respond to changes salinity, dissolved organic carbon (DOC) concentration and matter (DOM) composition incomplete. set laboratory experiments combining several artificial natural we demonstrate that interplay DOC concentration, DOM composition, salinity affects MMHg. The presence was found facilitate photodegradation, but degradation rates were not altered by varying concentrations over two orders magnitude. We have stronger effect than concentration. at high levels, where most UV radiation lost within first cm reaction vessels, lower observed. When moving from terrestrially influenced characterized degree humification, towards marine conditions with protein-rich pool, increased. contrast, had stabilizing Hence, especially systems low salt concentrations, either or impact

Язык: Английский

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Photochemical regulation of microcystin synthesis and release in cyanobacteria Microcystis aeruginosa by triplet state dissolved organic matter

The Science of The Total Environment, Год журнала: 2025, Номер 963, С. 178443 - 178443

Опубликована: Янв. 15, 2025

Язык: Английский

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Revealing Molecular Connections between Dissolved Organic Matter in Surface Water Sources and Their Cytotoxicity Influenced by Chlorination Disinfection

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

Опубликована: Янв. 27, 2025

Dissolved organic matter (DOM) is the primary precursor of disinfection products (DBPs) during chlorination. However, compositional characteristics DOM transformation chlorination process in different source waters and its relationship to cytotoxicity remain understudied. Here, we used high-resolution mass spectrometry evaluate chlorination-induced molecular-level changes derived from surface water sources. We correlated components with profiles selected DBPs using new alternative methods predictive toxicological assessments. Our findings indicate a selective natural tendency for lignin protein conversion manual process. The reactivity bioactive compounds decreased order > tannin or ConAC. mainly attributed lignin- protein-like within CHO CHNO groups. Additionally, mitochondrial damage highly sensitive indicator DOM-induced cytotoxicity. toxicity revealed 37 common toxicity-driving characterized by low mass, medium H/C ratio, O/C reduction state, hydrophobicity. highlight need exploit health effects provide substantial experimental evidence necessity remove potential toxicants.

Язык: Английский

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Erosion-induced low carbon availability exacerbates carbon loss: Insights from microbial carbon allocation and the chemo-diversity of carbon

CATENA, Год журнала: 2025, Номер 252, С. 108894 - 108894

Опубликована: Март 5, 2025

Язык: Английский

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Efficient Preparation of Potassium Humate from Waste Vegetable Leaves: Development of a Cu2O@HAK Catalyst and Innovative Application of Hydrothermal Method

Journal of environmental chemical engineering, Год журнала: 2025, Номер unknown, С. 116160 - 116160

Опубликована: Март 1, 2025

Язык: Английский

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The Role of Different DOMs in the Degradation of Ciprofloxacin under UV222 and UV222/Percarbonate Systems

Environmental Technology & Innovation, Год журнала: 2025, Номер unknown, С. 104218 - 104218

Опубликована: Апрель 1, 2025

Язык: Английский

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Microbial degradation of DOC released by the mixed culture of Crassostrea gigas and Undaria pinnatifida

Regional Studies in Marine Science, Год журнала: 2024, Номер unknown, С. 103800 - 103800

Опубликована: Сен. 1, 2024

Язык: Английский

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Photochemistry of dissolved organic matter derived from compost

The Science of The Total Environment, Год журнала: 2024, Номер 958, С. 178117 - 178117

Опубликована: Дек. 18, 2024

Язык: Английский

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Contribution of complexed Fe(Ⅱ) oxygenation to norfloxacin humification and stabilization: Producing and trapping of more humified products

Journal of Hazardous Materials, Год журнала: 2024, Номер 477, С. 135251 - 135251

Опубликована: Июль 18, 2024

Язык: Английский

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