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61,005 resultsShowing papers similar to Ecological and health risk assessment of potential toxic elements in surface sediments: Gediz River, Türkiye
ClearAccumulation and ecotoxicological risk assessment of heavy metals in surface sediments of the Olt River, Romania
Researchers measured eight heavy metals in sediments along Romania's Olt River and found contamination levels far exceeding national safety standards at most sites — particularly arsenic — with statistical analysis pointing to industrial and human activities as the primary sources, posing ongoing risks to freshwater ecosystems and human health.
Assessment of ecological risk for ecosystems caused by dredged materials in freshwater environments
Researchers assessed ecological risks posed by chemical contaminants in dredged freshwater sediments, evaluating metals, organic pollutants, and emerging contaminants including microplastics across multiple risk metrics to inform safe disposal and management decisions.
Microplastic Pollution and Risk Evaluation in the Gediz River
Researchers conducted a seasonal risk assessment of microplastics in the Gediz River, Turkey, using Pollution Load Index (PLI) and Polymer Hazard Index (PHI). Average abundances ranged from 13-211 units/L, with the dry season showing higher concentrations, and the risk assessment revealed elevated hazard scores in urban river sections.
Identification Sources and High-Risk Areas of Sediment Heavy Metals in the Yellow River by Geographical Detector Method
Scientists measured heavy metal contamination in river sediments of the Yellow River in Inner Mongolia, identifying industrial emissions and agricultural activities as the main sources. While focused on heavy metals, the research is relevant because microplastics frequently co-occur with and transport heavy metal pollutants in river systems.
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.
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.
Concentrations and total mass storage of fine sediment, potentially toxic elements (PTEs) and phosphorus in the channel bed of an urban river: a multi-year study
Not a microplastics paper — this multi-year study tracks how fine sediment and toxic elements like lead, arsenic, and zinc accumulate in the bed of an urban river in Canada, finding that concentrations exceed safe thresholds for aquatic life at multiple sites.
Potentially Toxic Elements’ Accumulation in Relation to Sediment Physicochemical Attributes and Microplastic Content in Zayandeh-Rood River, Iran
A survey of the Zayandeh-Rood River in Iran found microplastics in all 21 sediment sampling sites, and the presence of smaller, more abundant microplastic particles was associated with higher concentrations of potentially toxic heavy metals like barium, lithium, and silver in the sediment. The study confirms that microplastics act as vectors for heavy metal accumulation in river systems, magnifying the pollution burden in sediments and threatening aquatic life downstream.
An insight into the ecological risks and mitigation of heavy metal pollution in aquatic sediments and marine ecosystems
This review examines heavy metal pollution in aquatic sediments and marine ecosystems, covering contamination sources, ecological risks, and mitigation strategies. The study highlights the deterioration of aquatic zones due to rising pollution from urbanization and industrialization, and discusses how pollutants including microplastics interact with heavy metals to affect biogeochemical cycling and the food chain.
Evaluierung einer interdisziplinären Methodik zur hydrotoxikologischen Bewertung schadstoffbehafteter Sedimente nach Resuspensionsereignissen
This German study evaluated interdisciplinary methods for assessing the ecotoxicological risk of contaminated sediments when they are disturbed and resuspended into the water column during flood events. The research helps implement European Water Framework Directive requirements for assessing how sediment-bound pollutants affect water quality.
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.
Hazardous effects of heavy metal pollution on Nile tilapia in the aquatic ecosystem of the Eastern Delta in Egypt
Researchers assessed heavy metal contamination in Nile tilapia from rivers in Egypt's Eastern Delta, finding that some metals had accumulated in fish tissues at levels exceeding international safety limits — raising health concerns for people who eat fish from these polluted waters.
Integrated Ecological Risk Assessment of the Agricultural Area under a High Anthropopressure Based on Chemical, Ecotoxicological and Ecological Indicators
Researchers conducted an integrated ecological risk assessment of agricultural land using chemical, ecotoxicological, and ecological indicators, finding that while chemical analysis overestimated risk, the combined approach revealed most of the area had acceptable risk levels despite over a century of anthropogenic pressure.
Assessment of potentially toxic elements in groundwater through interpolation, pollution indices, and chemometric techniques in Dehradun in Uttarakhand State
Researchers assessed potentially toxic heavy metals (including iron, cadmium, lead, and chromium) in groundwater across an industrial region of northern India, finding contamination levels linked to agricultural runoff, industrial discharge, and land use patterns that pose ongoing health risks to local communities.
Integration of microplastics and heavy metals in the potential ecological risk index: Spatial pollution assessment of sediments in the inner Gulf of Thailand
Researchers assessed the spatial distribution of microplastics and heavy metals in surface sediments of the inner Gulf of Thailand, finding an average of nearly 1,400 microplastic pieces per kilogram with the highest concentrations near river mouths. They developed an integrated ecological risk index combining microplastic and heavy metal contamination, revealing that areas near river estuaries face moderate to considerable combined pollution risk. The study demonstrates the importance of evaluating microplastics alongside other contaminants for comprehensive environmental risk assessment.
Carcinogenic and non-carcinogenic health risk assessment of river Ganges in different climatic conditions and regions of Uttarakhand, India
Researchers assessed health risks from heavy metals in the Ganges River, finding elevated arsenic at some sites and correlations between physicochemical parameters and metal concentrations.
Ecological risk assessment of trace elements accumulated in stormwater ponds within industrial areas
Researchers assessed heavy metal and metalloid contamination in sediments from five stormwater ponds located near industrial areas, finding significant ecological risks from both commonly monitored metals (like copper and zinc) and rarely tested ones (like silver and antimony). The study shows that stormwater ponds near industrial sites can accumulate a broad range of toxic trace elements that threaten aquatic life.
Urban soil pollution in Türkiye: a review of potentially toxic elements, polycyclic aromatic hydrocarbons, and microplastics in major cities
This review summarizes the state of urban soil pollution in major Turkish cities, focusing on toxic metals, polycyclic aromatic hydrocarbons, and microplastics. Researchers found that cadmium and lead frequently exceeded national soil quality limits, microplastics were most abundant in parks and along roadsides, and pollution hotspots concentrated around industrial areas and traffic corridors. The study highlights the need for more systematic monitoring to develop effective soil management and remediation strategies.
Metal levels of canned fish sold in Türkiye: health risk assessment
Researchers analyzed metal and metalloid levels in 34 canned fish products sold in Turkey and assessed the potential health risks for consumers. While most metal levels were within acceptable ranges, some products showed elevated concentrations of certain elements. The study provides a health risk assessment for both children and adults, contributing to food safety monitoring efforts.
Health impacts of water pollution on fish in the Tigris River: A review
This review examines the health impacts of water pollution on fish in Iraq's Tigris River, covering degradation from industrial, agricultural, and domestic sources including heavy metals, pesticides, and microplastics, and consequences for fish populations supporting regional food security.
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 of Heavy Metals and Microbial Communities in Contaminated Sediments Along an Urban Estuary
Researchers studied heavy metal contamination and microbial community composition in estuarine sediments along an urban waterway, finding that urbanization-driven metal accumulation significantly altered microbial diversity and community structure.
The Ecological-Health Risks of Potentially Toxic Metals in the Surface Sediments and Leaves of Salt-Secreting Avicennia officinalis as Potential Phytoremediators: A Field-Based Biomonitoring Study from Klang Mangrove Area
Surface sediments in the Klang mangrove ecosystem were analyzed for potentially toxic metals, revealing elevated concentrations of lead, cadmium, and zinc that pose ecological and human health risks. Avicennia officinalis was assessed for phytoremediation potential, showing uptake of certain metals from contaminated sediments.
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.