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61,005 resultsShowing papers similar to Source, Distribution, and Risk Estimation of Hazardous Elements in Farmland Soils in a Typical Alluvial–Lacustrine Transition Basin, Hunan Province
ClearAssessment of heavy metal sources and health risks in soil-crop systems of fragmented farmland
Researchers assessed heavy metal contamination in farmland soils and crops in a fragmented agricultural area of Chongqing, China. They found that cadmium and arsenic posed the highest health risks, with children being more vulnerable than adults. The study identifies both natural geological sources and human activities like mining and farming as contributors to the contamination.
Characterizing Surface Soil Heavy Metal Contamination and Source Attribution in the Qinghai Lake Basin
Researchers collected 227 surface soil samples across the Qinghai Lake Basin to characterize the spatial distribution and source attribution of twelve heavy metals using enrichment factors, geo-accumulation indices, and absolute principal component analysis, distinguishing natural geogenic contributions from anthropogenic inputs.
Spatial Distributions and Intrinsic Influence Analysis of Cr, Ni, Cu, Zn, As, Cd and Pb in Sediments from the Wuliangsuhai Wetland, China
Researchers mapped heavy metal concentrations in sediments of the Wuliangsuhai wetland in China, finding arsenic and cadmium levels six- and seven-fold above background values respectively, largely from irrigation water inputs. High bioavailable fractions of cadmium, lead, and zinc raised concerns about ecological and human health risks in this agriculturally managed wetland.
Spatial agglomeration characteristics and influencing factors of health risk intensity of heavy metals in cultivated soil in Jiangsu Province
Researchers mapped the spatial distribution of heavy metal health risks in agricultural soils across Jiangsu Province, China, finding that chromium, lead, and arsenic pose elevated cancer risks — particularly for children — with risk intensities clustering in northern counties and driven by fertilizer use, road density, and economic factors.
Distribution, pollution, and human health risks of persistent and potentially toxic elements in the sediments around Hainan Island, China
Researchers measured six potentially toxic elements — including cadmium, arsenic, and lead — in marine sediments around Hainan Island, China, finding that cadmium and zinc showed the highest pollution levels linked to human activities, and that zinc contamination in one city posed potential carcinogenic health risks to children and adults.
Study on the Accumulation of Heavy Metals in Different Soil-Crop Systems and Ecological Risk Assessment: A Case Study of Jiao River Basin
Researchers assessed heavy metal accumulation in four crops (wheat, corn, potatoes, and leeks) and soils from the Jiao River Basin, evaluating ecological risk from eight heavy metals including copper, lead, cadmium, and arsenic. The study found that cadmium and arsenic posed the highest ecological risks, with crop type influencing heavy metal uptake patterns.
Distribution pattern and ecological risk assessment of heavy metals in Henan section of the Yellow River
Researchers assessed heavy metal pollution in sediments of the Henan section of the Yellow River, finding elevated concentrations of several metals including cadmium and lead, with ecological risk assessments indicating moderate to high risk in certain areas driven by both natural and anthropogenic inputs.
Characterizing surface soil heavy metal contamination and source attribution in the Qinghai Lake Basin
Researchers analyzed 227 soil samples across China's Qinghai Lake Basin to map heavy metal contamination, finding generally low pollution levels with transportation as a key source; they recommend future research examine the combined threat of heavy metals and microplastics in alpine ecosystems.
Identifying the Local Influencing Factors of Arsenic Concentration in Suburban Soil: A Multiscale Geographically Weighted Regression Approach
Researchers used advanced geospatial modeling to identify local factors driving arsenic concentration in suburban soils in China's black soil region. The study found that road density, nitrogen levels, and soil texture were the primary influences, with traffic emissions and fertilizer use identified as the main pollution sources.
Spatiotemporal Patterns of Heavy-Metal Pollution in Coastal Pinqing Lagoon (Southern China): Anthropogenic and Hydrological Effect
Researchers examined spatiotemporal patterns of heavy metal pollution in Pinqing Lagoon, a coastal lagoon in South China, using core and surface sediment samples to assess enrichment, contamination factors, and ecological risk. The study found that Cu was the chief pollutant while Cd posed the highest ecological risk, with century-scale anthropogenic disturbance, industrial activity, and wastewater discharge driving contamination patterns.
Heavy metal pollution and ecological risk under different land use types: based on the similarity of pollution sources and comparing the results of three evaluation models
Researchers analyzed heavy metal contamination across five land use types on the Qinghai-Tibet Plateau, finding that industrial activities like metallurgy and mining were the primary sources of cadmium, copper, and lead pollution, with the highest risk levels in watered and urban lands rather than grasslands.
Risk assessment and source apportionment of trace elements in multiple compartments in the lower reach of the Jinsha River, China
Researchers analyzed six trace element pollutants across water, sediment, and soil in a 28-km river stretch in China and found that industrial and agricultural activities were the main sources, with ingestion being the top health risk pathway — highlighting the need to assess connected environmental systems together rather than in isolation.
Evaluating Metal(loid)s Contamination in Soil of a Typical In-Dustry Smelting Site in South Central China: Levels, Possible Sources and Human Health Risk Analysis
Researchers assessed heavy metal contamination at an alloy smelting site in South Central China, finding that manganese and chromium were the dominant contaminants and that smelting activities posed significant human health risks, particularly for children via ingestion pathways.
Distribution, Environmental Risk Assessment, and Key Drivers of Microplastics in Farmland Soils Across Agricultural Zones in China
Researchers mapped the distribution and environmental risk of microplastics across a study area while identifying the key drivers of spatial variation, including land use and proximity to pollution sources. The findings provide a framework for prioritizing cleanup and management efforts in microplastic-contaminated environments.
Assessing spatial variability and source identification of heavy metals in agricultural soils: A geostatistical and multivariate analysis of coastal eastern Zhejiang, China
Researchers used geostatistical and multivariate analysis techniques to assess the spatial variability and sources of five heavy metals in agricultural soils along the coast of eastern Zhejiang, China. While focused primarily on heavy metals rather than microplastics, the study provides methodology relevant to understanding pollutant distribution in coastal agricultural areas. The findings identified industrial emissions, agricultural practices, and natural geological processes as key contamination sources.
Impact Imposed by Urbanization on Soil Heavy Metal Content of Lake Wetland and Evaluation of Ecological Risks in East Dongting Lake in China
This Chinese study measured heavy metal contamination in wetland soils of East Dongting Lake, finding elevated concentrations of several metals linked to nearby industrial and agricultural activities. Wetland contamination with heavy metals often co-occurs with microplastic pollution, and these combined stressors can have synergistic harmful effects on wetland ecosystems.
Identification of Groundwater Pollution Characteristics and Health Risk Assessment of a Landfill in a Low Permeability Area
Researchers assessed groundwater quality and health risks near a landfill in a low-permeability red-bed area of Southwest China, finding elevated concentrations of heavy metals and organic pollutants in shallow aquifers used for drinking water by nearby rural residents.
Heavy Metal Contamination in Surface Water of Harike Wetland, India: Source and Health Risk Assessment
Researchers measured levels of arsenic, cadmium, chromium, lead, and zinc in the surface water of Harike Wetland in India across different seasons. They found that cadmium and lead exceeded safe drinking water standards, particularly during winter months, with industrial discharge and agricultural runoff identified as primary sources. The health risk assessment indicated that these contaminated waters pose potential non-cancer health risks, especially for children.
A Comprehensive Analysis of Agricultural Non-Point Source Pollution in China: Current Status, Risk Assessment and Management Strategies
This review analyzes agricultural pollution in China from fertilizers, pesticides, plastic films, livestock, and crop waste, and finds widespread nitrogen, phosphorus, and heavy metal contamination across provinces. Microplastic pollution from agricultural plastic films was assessed as low risk, but heavy metals like arsenic and cadmium pose serious cancer risks to adults and children. The study recommends strategies focused on reducing pollution at the source to protect both farmland and human health.
[Characteristics, Risk Assessment of Microplastics, and Heavy Metal Pollution in Farmland Soils in the Upper Hanjiang River].
Researchers characterized microplastic and heavy metal pollution in farmland soils of the upper Hanjiang River, finding microplastic abundances of 360-6,300 particles/kg dominated by film-shaped PP and PE fragments under 0.5 mm, with Cu, Zn, Cd, and Pb exceeding background values and moderate overall compound pollution risk.
Non–Negligible Ecological Risks of Urban Wetlands Caused by Cd and Hg on the Qinghai–Tibet Plateau, China
Researchers assessed heavy metal contamination in the Huangshui National Wetland Park on the Qinghai-Tibet Plateau, finding that cadmium and mercury pose non-negligible ecological risks across the urban wetland's three zones.
Distribution, Sources, and Risk of Polychlorinated Biphenyls in the Largest Irrigation Area in the Yellow River Basin
Researchers found polychlorinated biphenyl (PCB) contamination in agricultural soils of China's Yellow River irrigation area, with concentrations accumulating in shallow soil layers and posing measurable non-carcinogenic and carcinogenic health risks to local residents.
Spatial distribution characteristics and pollution evaluation of soil heavy metals in Wulongdong National Forest Park
Researchers investigated the spatial distribution and pollution levels of seven heavy metals in soils across Wulongdong National Forest Park at different altitudes and slope orientations. The study found that while most heavy metal concentrations were near natural background levels, certain elements showed localized enrichment, highlighting the importance of monitoring even protected natural areas.
Characteristics and Potential Ecological Risks of Heavy Metal Content in the Soil of a Plateau Alpine Mining Area in the Qilian Mountains
Researchers analyzed heavy metal contamination in soil samples from an alpine mining area in the Qilian Mountains and found that cadmium, mercury, and arsenic were the primary pollutants exceeding background levels. The study used multiple assessment methods to evaluate pollution status and identified both mining activities and natural geological sources as contributors. The findings provide baseline data for guiding ecological restoration efforts in high-altitude mining regions.