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61,005 resultsShowing papers similar to Past Metal(loid) Pollution Records Inferred fromthe Sediments of Bukit Merah Reservoir Perak,Malaysia
ClearSedimentary History of Trace Metals Over the Past Half-Century in Songkhla Lake, Western Coast of the Gulf of Thailand: Anthropogenic Impacts and Contamination Assessment
This study analyzed trace metal accumulation in sediment cores from Songkhla Lake in Thailand over the past 50 years, finding increasing anthropogenic contamination linked to industrial and urban development. Heavy metals often co-occur with microplastics in sediments, and both accumulate in similar environments.
Reservoir sediments in central Europe as archives of human-environmental interaction during the past 115 years - the example of the Urft Reservoir
Researchers used sediment cores from the Urft Reservoir in Germany spanning 115 years to reconstruct how mining, land-use change, and industrial activity have shaped regional environmental contamination, including the emergence of microplastics in more recent sediment layers.
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.
The Pollution Characteristics of Harmful Heavy Metal in Surface Sediment of Sepang River, Malaysia
Researchers measured arsenic, manganese, zinc, chromium, iron, and cobalt concentrations in mangrove sediments of the Sepang River in Malaysia using instrumental neutron activation analysis, assessing heavy metal pollution levels relative to background values. The study documents the distribution of harmful heavy metals in a coastal mangrove ecosystem subject to anthropogenic pressures.
115 years of sediment deposition in a reservoir in Central Europe: Effects of the industrial history and environmental protection on heavy metals and microplastic
Researchers analyzed 115 years of sediment layers in a German reservoir to track historical patterns of heavy metal and microplastic pollution. They found that heavy metal contamination peaked during the industrial era and declined after environmental regulations were enacted, while microplastics appeared only in more recent decades. The study provides a long-term historical record showing how industrial activity and environmental policy have shaped pollutant accumulation over more than a century.
Identification, Abundance, and Chemical Characterization of Macro-, Meso-, and Microplastics in the Intertidal Zone Sediments of Two Selected Beaches in Sabah, Malaysia
Researchers identified and characterized macro-, meso-, and microplastics in intertidal sediments of two beaches in Sabah, Malaysia, finding significant plastic contamination with heavy metal associations that pose potential ecological risks to coastal environments.
Heavy Metals and Arsenic in Sediments of Xinfengjiang Reservoir in South China: Levels, Source Identification and Health Risk Assessment
Sediments in China's largest drinking water reservoir contained elevated levels of heavy metals including cadmium and arsenic, primarily from upstream agricultural and mining activities. This finding is concerning because microplastics in the same sediment can adsorb and concentrate these toxic metals, compounding contamination risks.
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.
Study of water quality for post-mining extermination, Banjarbaru City
This study examined water quality in former mining excavation lakes in Banjarbaru City, Indonesia, finding accumulation of heavy metals and other contaminants. This is a mining environmental impact study with no direct connection to microplastics research.
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.
Trends and Patterns of Sediment Contamination in Indonesia (1999-2024): A Scientometric Analysis
Researchers conducted a scientometric analysis of sediment contamination studies in Indonesia from 1999 to 2024, examining trends and patterns of heavy metal and microplastic pollution resulting from increased industrial discharges and domestic waste entering aquatic environments.
Analisis Kandungan Logam Berat (pb) Dan Kelimpahan Mikroplastik Di Estuari Sungai Baturusa Provinsi Kepulauan Bangka Belitung
Researchers measured lead concentrations and microplastic abundance in the Baturusa River estuary in Indonesia, an area affected by heavy industrial and anthropogenic activity. The study provides baseline data on combined heavy metal and microplastic contamination in this coastal region.
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.
Nutrient Decline and Metal Pollution Since the Second Industrial Revolution: The Red Sea
Researchers reconstructed 500 years of elemental changes in Red Sea sediment cores and found significant shifts in nutrient and metal accumulation rates following the Second Industrial Revolution and the opening of the Suez Canal, reflecting growing human impacts on a biodiversity hotspot.
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.
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.
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.
Distribution, Characteristics, and Ecological Risk Assessment of Microplastics and Heavy Metals in Surface Water at Hoa Binh Reservoir
Researchers sampled surface water in Hoa Binh Reservoir, Vietnam, during rainy and dry seasons, finding microplastics at all sites with fiber-dominated assemblages, and documenting co-occurrence with heavy metals including chromium, manganese, and lead.
Vertical Distribution of Potentially Toxic Metals and PAHs in the Alvarado Lagoon, Veracruz in the Southern Gulf of Mexico
Researchers analyzed sediment profiles spanning several decades from the Alvarado Lagoon in Mexico to assess contamination by trace metals and polycyclic aromatic hydrocarbons. They found no evidence of significant metal enrichment or pollution, with element concentrations attributable to natural geological origins. The study provides baseline environmental data useful for monitoring future contamination in this ecologically important lagoon system.
Co-occurrence of microplastics and heavy metals in a freshwater lake system in Indian Himalaya: Distribution and influencing factors
Researchers found widespread microplastic contamination in both the water and sediments of Manasbal Lake in the Indian Himalayas, with concentrations up to 4,020 particles per kilogram of sediment. Domestic sewage was identified as the primary source, and the microplastics were found alongside elevated levels of heavy metals like lead. This co-contamination is concerning because microplastics can absorb and transport heavy metals, potentially increasing toxic exposure for communities that depend on the lake.
Chronological Trends and Mercury Bioaccumulation in an Aquatic Semiarid Ecosystem under a Global Climate Change Scenario in the Northeastern Coast of Brazil
Dendrochemical analysis of mangrove tree rings in a Brazilian semiarid estuary reconstructed a chronological record of mercury contamination, with ring mercury concentrations corroborating patterns in co-collected sediment cores, and climate-driven increases in water residence time linked to rising mercury bioavailability and bioaccumulation in fish over recent decades.
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.
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.
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.