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20 resultsShowing papers similar to Spatial Distributions and Intrinsic Influence Analysis of Cr, Ni, Cu, Zn, As, Cd and Pb in Sediments from the Wuliangsuhai Wetland, China
ClearOccurrence and Ecological Risk Assessment of Heavy Metals from Wuliangsuhai Lake, Yellow River Basin, China
Researchers investigated heavy metal contamination in Wuliangsuhai Lake sediments in China's Yellow River Basin, finding that mercury and cadmium are the main pollutants, with cadmium showing the highest bioavailability due to its exchangeable fraction, and exogenous pollution concentrated in the top 20 cm of sediment cores.
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.
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.
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.
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.
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.
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.
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.
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 distribution characteristics, ecological risk assessment, and source analysis of heavy metal(loid)s in surface sediments of the nearshore area of Qionghai
Analysis of 93 surface sediment samples from the nearshore area of Qionghai found heavy metal contamination from natural weathering, agricultural, and industrial sources, with geo-accumulation indices and ecological risk assessments identifying priority elements of concern.
Eutrophication and sediment–water exchange of total petroleum hydrocarbons and heavy metals of Hashilan wetland, a national heritage in NW Iran
Researchers analyzed heavy metals and petroleum hydrocarbons in the water and sediments of Hashilan wetland in Iran, finding elevated levels of nickel, copper, and chromium largely from natural geological sources, with agricultural activity contributing to molybdenum pollution. The study found relatively low petroleum contamination and ecological risk in the water column.
Heavy Metals in the Sediments of Dongshan Bay, China: Sources, Distribution, and Controlling Factors
Researchers analyzed heavy metals in sediments from Dongshan Bay, China, estimating that roughly 270 tons of heavy metals were deposited there in 2021. Evidence indicates that aquaculture, industrial discharge, and household waste are the primary sources, with lead, arsenic, zinc, and mercury showing the most enrichment in the bay's sediments.
Health Risk Assessment of Heavy Metals in Soil of Lalu Wetland Based on Monte Carlo Simulation and ACPS-MLR
Researchers assessed the ecological and health risks of heavy metals in soil from Lalu Wetland, the world's largest plateau urban wetland in Lhasa, China. They found that overall risk levels were low, with cadmium being the primary pollutant and traffic emissions contributing over half of the contamination. The Monte Carlo simulation-based health assessment indicated no non-carcinogenic risks, though acceptable carcinogenic risks were present, with children being more vulnerable than adults.
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.
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.
Micro-essential and toxic heavy metals in surface water of Harike wetland - India
Researchers measured concentrations of both bio-essential (chromium, manganese, iron, cobalt, nickel, copper, zinc) and non-essential (arsenic, mercury, cadmium, lead) heavy metals in surface water of Harike wetland, the largest Ramsar-designated wetland in northern India, using inductively coupled plasma-mass spectrometry. They found alarming concentrations of iron (437.98 ug/L), mercury (4.01 ug/L), and lead (156.72 ug/L), attributing contamination to industrial, domestic, and agricultural inputs from the Sutlej River.
Assessment 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.
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.
Environmental Quality and Ecological Risk Assessment of Heavy Metals in the Zhuhai Coast, China
Researchers assessed heavy metal distribution and ecological risk in seawater, sediments, and organisms across the Zhuhai coast of China, finding that copper, zinc, and lead exceeded seawater standards and that cadmium and copper posed moderately high ecological risk. Chemical company emissions were identified as the main contributors to the elevated cadmium and copper levels.
Distribution, risk assessment of heavy metals in sediments and their potential risk on water supply safety of a drinking water reservoir, middle China
Researchers assessed the distribution and risk of heavy metals in reservoir sediments, finding that bio-enrichment and bio-amplification pathways allow sediment-bound metals to enter the food chain and pose potential risks to downstream water supply safety.