We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Papers
61,005 resultsShowing papers similar to Spatiotemporal Patterns of Heavy-Metal Pollution in Coastal Pinqing Lagoon (Southern China): Anthropogenic and Hydrological Effect
ClearSpatial 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.
Contaminant Characteristics and Influencing Factors of Heavy Metals in Seawater and Sediments in a Typical Mariculture Bay in South China
Researchers assessed heavy metal contamination in seawater and sediments of Qinzhou Bay, a major mariculture area in South China, finding seasonal variations in metal concentrations influenced by river input, aquaculture activities, and hydrodynamic conditions.
Ecological risk assessment of aquatic organisms induced by heavy metals in the estuarine waters of the Pearl River
Researchers monitored five heavy metals — arsenic, copper, lead, mercury, and zinc — across eight estuaries of China's Pearl River throughout 2020, finding that copper and zinc posed the greatest ecological risks to aquatic organisms, particularly threatening crustaceans, mollusks, and certain fish species. These findings provide a foundation for setting water quality standards and protecting biodiversity in one of China's most heavily developed coastal regions.
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.
Ecological-Health Risk Assessments of Heavy Metals (Cu, Pb, and Zn) in Aquatic Sediments from the ASEAN-5 Emerging Developing Countries: A Review and Synthesis
This review compiled copper, lead, and zinc concentrations in aquatic sediments across five ASEAN countries from 1981 to 2021, finding elevated heavy metal levels at sites with high human activity and assessing ecological and health risks from sediment contamination.
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.
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.
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.
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.
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.
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.
Relationship between microplastics and heavy metals in Tam Giang-Cau Hai lagoon sediments
Researchers investigated the distribution and interactions of microplastics and ten heavy metals in sediments of the Tam Giang-Cau Hai Lagoon in Vietnam, finding moderate microplastic contamination and using Spearman correlation and PCA to assess relationships between sediment properties, metal concentrations, and plastic abundance. The study provides baseline data for understanding co-pollution dynamics in this coastal lagoon ecosystem.
Sediments Quality based on Geo-Accumulation Index in Heavy Metals (Pb, Cu, and Cd) of Cengkok Coastal Waters, Banten Bay
This study assessed heavy metal contamination in sediments near Banten Bay, Indonesia, using the geo-accumulation index to evaluate lead, copper, and chromium levels at sites affected by industrial and fishing activities. Heavy metal pollution and microplastic contamination frequently co-occur in industrialized coastal environments.
Multidecadal heavy metals and microplastic deposition records in an urban lake: the ecological risk assessments and influencing factors
Researchers collected sediment cores from Xinghu Lake, a Chinese urban lake, and used cesium-137 and lead-210 isotopic chronology to reconstruct multidecadal deposition records of heavy metals and microplastics. The study found average comprehensive ecological risk indexes of 46.59 for heavy metals and 105.78 for microplastics, with projections indicating risks reaching high and very high levels by 2030 and 2050 respectively.
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.
Temporal and Spatial Analysis of Trace Metal Ecotoxicity in Sediments of Chaohu Lake, China
Researchers analyzed the ecological risks of trace metals released from sediments in Chaohu Lake, China, across different seasons and locations. The study found that copper, lead, and zinc posed persistent toxicological risks, with the highest risk occurring in the eastern region during summer months, providing targeted guidance for pollution control and environmental monitoring.
Heavy Metal Pollution and Potential Ecological Risk Assessment in a Typical Mariculture Area in Western Guangdong
Researchers assessed heavy metal contamination in seawater, sediments, and feed in a mariculture area of western Guangdong, China, finding that lead and copper exceeded standard limits in breeding wastewater and that the sediment was at low to moderate ecological risk from chromium, copper, arsenic, cadmium, and lead.
Occurrence 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.
Metal contamination in a sediment core from Osaka Bay during the last 400 years
Researchers analyzed a 9-meter sediment core from Osaka Bay spanning 2,300 years and found that industrial copper, zinc, and lead pollution began rising in the 1670s and peaked around 1960, with zinc isotope ratios helping identify road dust, tire wear, and factory runoff as key pollution sources.
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.
Past Metal(loid) Pollution Records Inferred fromthe Sediments of Bukit Merah Reservoir Perak,Malaysia
This study reconstructed historical metal pollution in Bukit Merah Reservoir in Malaysia by analyzing sediment cores for metal distribution and geochemical indicators, finding evidence of elevated pollution from tin mining and agricultural activities that began in the 1980s and persists in deeper sediment layers.
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.
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.
Ecological Risk Assessment of Heavy Metal (Pb, Cu) Contamination in Water, Sediment, and Polychaeta (Neoleanira Tetragona) from Coastal Areas Affected by Aquaculture, Urban Rivers, and Ports in South Sumatra
This study assessed the ecological risks of lead and copper contamination in water, sediment, and polychaete worms (Neoleanira tetragona) from coastal areas in South Sumatra affected by aquaculture, urban rivers, and port activities. Results showed elevated heavy metal concentrations in multiple compartments, with polychaetes accumulating both metals at levels of ecological concern.