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Open access Aug 2026

Spatial Distribution of Mercury and Potentially Toxic Elements in Soils from an Agricultural and Grazing Area Affected by Historical Mining

Historical mining districts are long-term sources of environmental contamination, especially where agriculture and grazing occur near mining areas. This study evaluates mercury (Hg) and other potentially toxic elements (PTEs) in soils from Solana de Peñarrubia, within the Almadén mining district (Spain). Thirty-four so...

Nerea García-Donas, S. Lorenzo, P. Higueras et al. · 0 citations
Open access Sep 2026

The Integrated Spatial Ecological Risk Assessment of Heavy-Metal Contamination in Arid Mining-Influenced Region in Central Asia

The spatial distributions of the potential ecological risk index (RI) and the geoaccumulation index (Igeo) in soils of the Zhetysu region (Kazakhstan) were examined. The enrichment factor ranged from 39.4 for cadmium to 21,481 for nickel. There are few non-ferrous metal enterprises and mineral deposits located in the r...

A. Madibekov, A. Karimov, L. Ismukhanova et al. · 0 citations
Open access Sep 2026

Spatial Differentiation and Integrated Risk Assessment of Heavy Metals in Paddy Soils Affected by Lead–Zinc Mining and Smelting

Subsurface contamination in mining-affected paddy soils raises questions about how concentration changes with depth relate to contamination persistence and metal partitioning. We sampled 46 paddy field sites in Guangdong, China, at 0–20, 20–40 and 40–60 cm. Total concentrations of eight elements were measured by induct...

Zai-Hua Wang, Yu-Chen Lu, Le Zhang et al. · 0 citations
Open access Oct 2026

Soil heavy metals across land uses on Zhoushan Island, China: Spatial patterns, risks, and potential sources.

Heavy metal accumulation in island soils is a critical environmental issue because spatially constrained coastal systems receive overlapping inputs from urbanization, tourism-supporting infrastructure, shipping, industry, and agriculture. In this study, 43 surface-soil samples from 42 locations on Zhoushan Island, Chin...

Peng-Gao Fang, Qiu-Gui Wang, Qiang-Qiang Zhong et al. · 0 citations
Open access Oct 2026

Spatial heterogeneity, source contributions, and hazard mapping of potentially hazardous elements in irrigated soils of the Yellow River Basin, Northwest China

Potentially hazardous element (PHE) contamination threatens agroecosystem sustainability and food security, particularly in irrigated regions. The Yellow River Basin in Northwest China is a critical agricultural zone where intensive irrigation and fertilizer use may accelerate soil contamination. A total of...

Hao Xu, Xue-Qin Liu, Shu-Juan Chen et al. · 0 citations
Open access 2026

Assessing trace metal concentration in urban soils: a study of urban parks and unforested urban areas.

Urban soils act as long-term reservoirs for trace metals, yet how soil physicochemical properties and anthropogenic pressure interact over time remains poorly understood in medium-sized cities of the Global South. This study evaluates the spatiotemporal dynamics and ecological risks of Ba, Cu, Zn, Pb, Cr, Ni, Mo, Co, a...

Priscila B. Penteado, D. C. Nogarotto, Bruno E. S. Costa et al. · 0 citations

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