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61,005 resultsShowing papers similar to Environmental Quality and Ecological Risk Assessment of Heavy Metals in the Zhuhai Coast, China
ClearHeavy 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.
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.
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.
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.
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.
Spatial Distribution and Risk Assessment of Heavy Metals in Sediments of the Mangrove Ecosystem in Ras Mohammed Protectorate, Gulf of Aqaba, Red Sea
Researchers measured heavy metal concentrations (including lead, cadmium, copper, and zinc) in mangrove sediments of Ras Mohammed Protectorate in the Gulf of Aqaba, Red Sea, and assessed ecological risks. The spatial distribution showed variation across sites, with some metals elevated above background levels in areas closer to human activities.
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.
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 mobility and bioavailability in sediment fractions of major tourist beaches on the south-west coast of India: Implications for coastal ecological health
Researchers applied sequential extraction to sediments from four tourist beaches in Kovalam, India, characterizing the mobility and bioavailability of seven heavy metals across five geochemical fractions, finding copper and cadmium at high pollution and enrichment levels and identifying significant non-carcinogenic health risks for children from lead, chromium, zinc, and copper at all beaches.
Health risk assessment of heavy metals in marine fish caught from the northwest Persian Gulf
Not a microplastics paper — this study measures heavy metal concentrations (nickel, zinc, copper, lead, cadmium) in marine fish from the Persian Gulf and assesses the associated human health risk from fish consumption.
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.
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.
Environmental risk assessment of heavy metals and microplastics in marine biota along Gujarat coastline, India
Researchers assessed environmental risks from both heavy metals and microplastics in marine organisms collected along the Gujarat coastline in India, measuring contamination levels in multiple species. Combined contamination elevated ecological risk indices above safe thresholds at several coastal sites.
Progress in the Research of the Toxicity Effect Mechanisms of Heavy Metals on Freshwater Organisms and Their Water Quality Criteria in China
Researchers reviewed the toxicity mechanisms of heavy metals on freshwater organisms and the development of water quality criteria in China. The study examines how heavy metal pollution threatens both aquatic ecosystems and human health, and discusses the scientific basis for establishing environmental standards that protect freshwater organisms from harmful contaminant levels.
Evaluation of Urbanization Influences on Beach Sediment Contamination with Heavy Metals Along the Littoral Zone of Alexandria City, Egypt
Researchers assessed heavy metal contamination in beach sediments along Alexandria City, Egypt, finding concentrations of cadmium, cobalt, chromium, copper, lead, and zinc that were 2 to 26 times above natural background levels. The study identified urbanization, tourism, harbors, and industrial activities as primary anthropogenic sources, with zinc levels high enough to pose adverse risks to marine life.
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 in Coastal Environments: Ecological Implications and Management Strategies: A Review
This review examines heavy metal pollution in coastal environments, covering sources like industrial runoff and agriculture, ecological impacts, and cleanup strategies. While focused on heavy metals rather than microplastics, it is relevant because microplastics often carry heavy metals on their surface, potentially increasing human exposure to these toxic substances through the food chain.
Contamination, Toxicity and Ecological Risk Assessment of Heavy Metals in Surface Sediments of Coastal Areas of Bushehr Province: A Systematic Review Study
This systematic review of studies from 2012-2020 found that coastal surface sediments in Bushehr Province, Iran, contain heavy metals at levels posing moderate to high ecological risk, with nickel, chromium, and cadmium identified as the primary contaminants from petrochemical and industrial sources. The pollution levels exceeded safe thresholds in several coastal areas. Coastal sediment contamination with heavy metals often co-occurs with microplastic pollution, and microplastics can adsorb and concentrate these toxic metals, potentially increasing their bioavailability to marine organisms.
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.
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.
Heavy metal accumulation in a bioindicator species, Limpet Patella caerulea, in Yalova (İzmit Bay): Risk assessment for human health
Researchers examined monthly heavy metal concentrations (cadmium, copper, lead, zinc, nickel, and iron) in the whole-body tissue of the limpet Patella caerulea as a bioindicator species in Izmit Bay, Marmara Sea, and conducted a human health risk assessment based on measured metal levels. The study found that cadmium levels exceeded safe limits in all sampled months and lead exceeded limits in autumn, indicating potential health risks for consumers of limpets from this heavily industrialized coastal area.
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.
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.
Preliminary Determination of Heavy Metals in Sediment, Water, and Some Macroinvertebrates in Tawi-Tawi Bay, Philippines
Researchers conducted a preliminary assessment of heavy metal concentrations in sediment, water, and macroinvertebrates at multiple sites in Tawi-Tawi Bay in the Philippines. The study establishes baseline data on chemical pollution in this understudied coastal area.