Spatial and temporal patterns of trace metal distribution and ecological risk in a coal-mined central appalachian watershed, USA

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...

Ecological Risk Assessment of Metal Contamination in Groundwater and Sediments Along the Ruta de los Cenotes, Mexican Caribbean

Metal contamination in karst aquifers is a growing concern in rapidly urbanizing coastal regions. The Ruta de los Cenotes in Quintana Roo comprises groundwater-fed cenotes of high hydrogeological and ecological relevance. This study characterized the hydrogeochemical setting of five cenotes along a coastal–inland gradi...

Spatial Distribution, Ecological and Human Health Risk Assessment, and Quantitative Source Apportionment of Heavy Metals in Stream Sediments of an Arid River, Qaidam Basin, NW China.

Under the dual influence of geological background and human activities, heavy metal contamination in riverine ecosystems poses a significant threat to ecological security and public health. This study systematically investigated the contamination characteristics, ecological and health risks, and sources of nine heavy m...

Distribution of heavy metals in surface water and sediments of the Coata River Basin, Peru: Seasonal variability and ecological risk assessment

Mining, urban wastewater discharge, and intensive agriculture have degraded freshwater quality across the Andean Altiplano, yet integrated multi-parameter assessments remain scarce for high-altitude tributaries of Lake Titicaca. This study evaluated the spatial and seasonal distribution of seven heavy metals (As, Cd, C...

Spatial distribution and geochemical assessment of arsenic, lead, and zinc in stream sediments from an agricultural region influenced by mining activities in Zacatecas, Mexico

Trace-metal contamination and ecological risk assessment in surface sediments of Adabiya Port, Gulf of Suez: spatial distribution, source apportionment, and baseline characterization