A comprehensive study on distribution, migration, risk and source of heavy metals in lake, river and salt lake in the largest watershed of the Qaidam Basin

Integrating spatial drivers and source apportionment of heavy metals in sediments of seasonal isolated lakes: a case study of Poyang Lake National Nature Reserve

Spatial patterns and ecological significance of heavy metals in water and sediments of the Drini–Buna river system

The Drini River Basin represents the largest river system in Albania and plays a key role in supporting freshwater resources, biodiversity, hydropower production, and human activities. This study evaluated the distribution, contamination status, and ecological risk of trace metals in water and surface sediments collect...

Influence of hydrodynamic conditions on heavy metal distribution and ecological risk in freshwater sediments: a comparative study of reservoir and stream ecosystems

Pollution assessment and source analysis of heavy metals and nutrients in sediments of Liujiaxia reservoir, upper Yellow River, China

To investigate the pollution characteristics, ecological risks, and sources of nutrients and heavy metals in the sediments of the Liujiaxia Reservoir, 21 surface sediment samples were collected in August 2025. Concentrations of total nitrogen (TN), total phosphorus (TP), and eight heavy metals were determined, and poll...

Spatial and temporal variation of metal trace elements (MTE) and health risk assessment in the waters of the upper Bandama (northern Côte d'Ivoire)

The Bandama Basin hosts one of the country's major river systems. Due to overexploitation and the expansion of human activities in the Upper Bandama Basin, the river's water quality has severely deteriorated due to trace metal elements. This study aimed to assess water quality and the health risks associated with consu...

Heavy Metal Contamination and Ecological Risk Assessment in the Bhairab–Rupsha River Basin: An Integrated Approach Using Pollution Indices, Spatial Mapping, and Multivariate Analysis

Heavy metal contamination in tidal river systems is an increasing environmental concern in rapidly urbanizing regions of South Asia. This study presents an integrated assessment of heavy metal pollution and ecological risk in the Bhairab–Rupsha River basin, Bangladesh. Concentrations of six priority metals—chromium...