As a typical historical mining city, Daye, Hubei, faces potential heavy metal migration risks from legacy mining activities. This study conducted a grid-based survey in 2020, analyzing 389 soil and 137 water samples using the Nemerow Pollution Index (NPI) and spatial statistics to assess pollution and transfer mechanisms. Results show that soils were significantly contaminated (average NPI = 5.40), with 71.03% of samples exceeding the pollution threshold (NPI > 1), whereas surface water (0.18) and groundwater (0.11) maintained good quality. Despite limited direct soil migration, atmospheric wet deposition was identified as the probably dominant pathway driving higher concentrations of Cu, Cd, Pb, and As in surface water than in groundwater (e.g., on average, Cu and Cd levels in surface water were ~1.7-fold and ~5-fold those in groundwater, respectively, all well below Class III limits of national water quality standards). This study clarifies the mechanism protecting water bodies amid severe soil contamination and provides a scientific basis for integrated soil–water management in post-mining regions.
Against the backdrop of growing global energy demand and transboundary environmental pollution, heavy metal pollution from coal mining poses a significant environmental risk, necessitating strengthened governance to ensure water security and ecological sustainability. The concentration, spatial pattern and pollution so...
Boya Tong, Jun Fan, Yuani Sun· Environmental Research· 0 citations
Heavy metal contamination in mining-affected groundwater may pose potential risks to drinking water safety and human health. In this study, 25 groundwater samples, including 18 from Aquifer IV of the Cenozoic unconsolidated porous aquifer system and 7 from the Taiyuan Formation limestone karst aquifer, were collected f...
Gan Jiang, Kai Chen, Qi-Meng Liu· Toxics· 0 citations
Coal mining activities are recognized as significant sources of heavy metal contamination, posing serious threats to
surface water, groundwater, and public health in mining communities. This study assessed the seasonal occurrence of heavy
metal contamination and evaluated the suitability of surface and groundwater for...
Oludele J. Ayoola, V. A. Abah, A. Abubakar et al.· International Journal of Inn...· 0 citations
The assessment of nitrate pollution in groundwater is crucial for ensuring the safety of groundwater quality and related human health risks. This study conducted a comprehensive hydrogeochemical survey in an area strongly influenced by mining areas and human activities. A total of 236 groundwater samples were collected...
He Zhang, Jiangyulong Wang, Tao Cui· Journal of Contaminant Hydro...· 0 citations
Understanding the hydrochemical characteristics of groundwater in coal mining subsidence areas is of critical scientific significance for water environment protection and ecological restoration in mining regions. A systematic hydrochemical campaign was undertaken in the Luwa collapse zone (Jining city, Shandong Provinc...
