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61,005 resultsShowing papers similar to Assessment of heavy metal sources and health risks in soil-crop systems of fragmented farmland
ClearStudy 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.
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.
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 of Soil Heavy Metal Pollution and Health Risks in Chenzhou City
Researchers analyzed 600 soil samples in Chenzhou City, China, and found that while most areas had low to moderate heavy metal contamination, about 3% of samples showed high ecological risk from metals like mercury and cadmium near industrial zones. While focused on heavy metals rather than microplastics, the study is relevant because microplastics in soil can absorb and transport these same toxic metals, potentially increasing human exposure through crops grown in contaminated areas.
Source, Distribution, and Risk Estimation of Hazardous Elements in Farmland Soils in a Typical Alluvial–Lacustrine Transition Basin, Hunan Province
Researchers investigated the spatial distribution, sources, and health risk of hazardous elements including cadmium, lead, zinc, antimony, and arsenic in farmland soils of an alluvial-lacustrine transition basin in Hunan Province, China, attributing elevated concentrations to anthropogenic activities and assessing exposure risks.
Heavy Metal Pollution and Health Risk Assessment of Vegetable–Soil Systems of Facilities Irrigated with Wastewater in Northern China
Researchers assessed heavy metal pollution and health risks in vegetable-soil systems irrigated with wastewater in northern China, finding elevated contamination levels and identifying potential health hazards from consuming vegetables grown in sewage-irrigated facilities.
Managing contaminants in farmed soils: case studies from China
This chapter examines agricultural soil contamination in China — where 16.1% of surveyed sites are polluted — using case studies to illustrate strategies for managing heavy metals, microplastics, and other contaminants in farmed soils with implications for food safety.
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.
Heavy Metal Content in the Soil and Typical Crops of the Pannonian Region of Slovenia
This study assessed heavy metal contamination in soils and food crops in the Pannonian region of Slovenia, where agriculture has historically dominated land use. Results revealed spatial variation in contaminant levels driven by both the underlying geology and local human agricultural activity.
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.
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.
Accumulation characteristics and evaluation of heavy metals in soils and vegetables of plastic-covered sheds in typical red soil areas of China
Researchers measured heavy metal levels in soils and vegetables from plastic-covered greenhouses in China and found that cadmium exceeded safe background levels in most samples. While the vegetables generally did not pose an immediate health risk, the accumulation of metals in greenhouse soils is a growing concern. Plastic-covered farming is relevant to microplastic research because the degrading plastic covers are a direct source of microplastics that can carry heavy metals into crops.
Distribution characteristics and integrated ecological risks evaluation modelling of microplastics and heavy metals in geological high background soil
Researchers investigated the co-occurrence of microplastics and heavy metals in high geological background soil in Qianxi, China, and developed a new model for evaluating their combined ecological risk. They found elevated cadmium levels alongside significant microplastic contamination, with different crop rotation patterns influencing pollution distribution. The study proposes a two-dimensional index for assessing the joint environmental risks of microplastics and heavy metals in agricultural soils.
Bioaccumulation and potential human health risks of metals in commercially important fishes and shellfishes from Hangzhou Bay, China
Researchers measured heavy metal accumulation in commercially fished species from China's Hangzhou Bay and found that children face greater health risks than adults from eating contaminated seafood, with two crab species and an oyster posing the highest cancer risk from arsenic and cadmium exposure.
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.
Heavy metals concentrations in commercial organic fertilizers and the potential risk of fertilization into soils
Researchers measured heavy metals in 74 commercial organic fertilizers sold in China, finding that large proportions exceeded safety limits — 46% for arsenic and over 75% for zinc and nickel by European Union standards. The findings raise concerns that widespread organic fertilizer use could gradually accumulate toxic metals in farmland soils, with cadmium identified as the most important metal to monitor.
An Assessment Framework for Human Health Risk from Heavy Metals in Coal Chemical Industry Soils in Northwest China
An expanded human health risk assessment framework was applied to 128 soil samples from coal chemical industry sites in northwest China, evaluating risks from 9 heavy metals (including Be, V, and others) via multiple exposure routes and finding priority pollutants needing remediation.
Sources, effects and present perspectives of heavy metals contamination: soil, plants and human food chain
This review summarizes how heavy metals like lead, cadmium, and arsenic contaminate soil, get absorbed by crops, and enter the human food chain. Heavy metals at high levels can damage plant growth and accumulate in food at concentrations unsafe for human consumption. This is relevant to microplastics research because microplastics in soil can bind and transport heavy metals, potentially increasing the amount that ends up in the food we eat.
Accumulation Characteristics and Pollution Evaluation of Soil Heavy Metals in Different Land Use Types: Study on the Whole Region of Tianjin
Researchers analyzed heavy metal accumulation across different land use types throughout Tianjin, China, finding that pollution levels and spatial distribution varied significantly by land use, with industrial and traffic-related activities identified as primary contamination sources.
Heavy metal concentrations in soil and ecological risk assessment in the vicinity of Tianzhu Industrial Park, Qinghai-Tibet Plateau
Researchers measured the concentrations of ten heavy metals in soils near an industrial park on the Qinghai-Tibet Plateau and assessed the ecological risks. They found elevated levels of cadmium, mercury, and arsenic in some areas, with risk assessments indicating moderate to high contamination near the industrial zone. The study underscores the vulnerability of high-altitude plateau soils to industrial pollution, even in regions known for their environmental sensitivity.
[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.
Appraisal of Heavy Metals Accumulation, Physiological Response, and Human Health Risks of Five Crop Species Grown at Various Distances from Traffic Highway
Researchers examined heavy metal accumulation in five crop species grown at various distances from a traffic highway, finding that proximity to roads significantly increased metal contamination in crops and posed potential health risks through the food chain.
Spatial and temporal distribution characteristics of antibiotics and heavy metals in the Yitong River basin and ecological risk assessment
Researchers analyzed the distribution of antibiotics and heavy metals in the Yitong River in China, finding that antibiotics were higher in urban areas while heavy metals like cadmium were more concentrated near agricultural zones — and that both posed elevated health risks to children. The fluoroquinolone antibiotics ofloxacin and norfloxacin were at high ecological risk levels, highlighting the river as a complex pollution hotspot requiring targeted intervention.
Comprehensive Environmental and Health Risk Assessment of Soil Heavy Metal(loid)s Considering Uncertainties: The Case of a Typical Metal Mining Area in Daye City, China
This study conducted a comprehensive environmental and health risk assessment of heavy metals in soils near mining sites, incorporating uncertainty analysis and probabilistic methods to better estimate risks and identify priority contaminants for remediation.