Hydrochemical fingerprints and health risk assessment of groundwater contamination in the Bohai Sea region, China

Marine Pollution Bulletin, Год журнала: 2025, Номер 212, С. 117559 - 117559

Опубликована: Янв. 16, 2025

Язык: Английский

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Bacterial and archaeal community successions in high-salinity groundwater and their potential impact on arsenic cycling

Journal of Hydrology, Год журнала: 2025, Номер unknown, С. 132742 - 132742

Опубликована: Янв. 1, 2025

Язык: Английский

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Study on Natural Attenuation of Groundwater Organic Pollutants by Integrating Microbial Community Dynamics and Isotope Analysis

Water, Год журнала: 2025, Номер 17(4), С. 555 - 555

Опубликована: Фев. 14, 2025

This study focuses on a typical chemically contaminated site in the southeastern coastal region of China, investigating natural attenuation mechanisms benzene and o-toluidine groundwater through high-throughput sequencing, physicochemical analyses, stable isotope techniques. The results demonstrate significant heterogeneity spatial distribution degradation processes pollutants within zones (W27, W28, W31). Environmental factors such as HCO3−, SO42−, ORP predominantly influence microbial community structure functional distribution. Stable data reveal that δD δ13C enrichment effects are most pronounced deep layer (W28_40m), indicating active pollutant degradation, while deeper layers W27 W31 is constrained by anaerobic conditions reduced activity. combined analysis hydrogen carbon isotopes elucidates pathways dynamic zones, providing quantitative evidence for scientific support optimizing remediation strategies.

Язык: Английский

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Hydrochemistry and Evolutionary Processes During Saltwater Intrusion in the Saline–Fresh Groundwater Transition Zone in Southern Laizhou Bay, China

Water, Год журнала: 2025, Номер 17(7), С. 1081 - 1081

Опубликована: Апрель 4, 2025

Saltwater intrusion is one of the most significant groundwater challenges in southern Laizhou Bay. Previous studies have predominantly focused on regional scales, leaving vertical saltwater pattern relatively underexplored. This knowledge gap hinders effective prevention and control intrusion. study utilized hydrochemical stable isotopic methods combined with facies evolution diagrams to investigate processes a typical profile saline–fresh transition zones. The results showed that types area were complex diverse, fresh groundwater, saline brine. Stable isotope analyses indicated mixing evaporation seawater predominant governing salinity groundwater. In south profile, carbonate dissolution played role, silicate may represent primary water–rock interaction Groundwater samples from various locations within exhibited different stages evolution, majority salinization phase during process. zone primarily occurred between −20 −30 m, exhibiting wedge-shaped pattern. enhanced understanding

Язык: Английский

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Pilot-scale experimental study on the enhanced natural attenuation of complex organic contaminants based on the recharge of electron acceptors

Water Research, Год журнала: 2024, Номер 268, С. 122731 - 122731

Опубликована: Ноя. 1, 2024

Язык: Английский

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