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61,005 resultsShowing papers similar to Faecal contamination and its relationship with some environmental variables of four urban rivers in inner Hanoi city, Vietnam
ClearA Review of Microplastics Pollution in the River Basin of Vietnam in Comparison with the World Context
This review examines microplastic pollution across Vietnam's river basins in the context of global patterns, finding significant contamination in surface water, sediments, aquatic organisms, and mangrove ecosystems — particularly in coastal urban areas — with concentrations in some urban rivers reaching 519,000 pieces/m³.
Sources of microplastic pollution in the Saigon-Dong Nai rivers, potential risks affecting human health and recommendations for mitigation solutions
Sampling of the Saigon-Dong Nai river system in Vietnam detected microplastic fragments, films, and fibres at concentrations of up to 715,000 particles per cubic metre, primarily sourced from urban runoff, wastewater, and industrial discharge. Because these rivers supply drinking water and support subsistence fishing for millions of people, the findings highlight a significant and largely unquantified human exposure pathway to microplastics in a rapidly urbanising region.
Influences of anthropogenic activities on water quality in the Saigon River, Ho Chi Minh City
Researchers assessed water quality across agricultural, industrial, residential, and less-impacted zones of the Saigon River in Ho Chi Minh City, measuring physicochemical parameters, nutrients, heavy metals, and antibiotic residues across rainy and dry seasons. Higher turbidity and BOD5 levels were observed in the rainy season, highlighting the influence of land use and seasonal variation on river water quality.
Characteristics of Microplastics and Their Affiliated PAHs in Surface Water in Ho Chi Minh City, Vietnam
Researchers characterized microplastics and associated polycyclic aromatic hydrocarbons (PAHs) in surface water across canals, the Saigon River, and coastal waters in Ho Chi Minh City, Vietnam, finding microplastics at all sites with the highest concentrations in urban canals and detecting co-occurring PAH contamination.
Macroplastic and microplastic contamination assessment of a tropical river (Saigon River, Vietnam) transversed by a developing megacity
Researchers assessed macroplastic and microplastic contamination in a tropical river in Vietnam, finding elevated pollution levels linked to urban and agricultural land use along the waterway.
Pollution and Risk Level Assessment of Pollutants in Surface Water Bodies
Researchers assessed surface water quality and pollution risk levels in Soc Trang province, Vietnam by measuring 13 parameters at 35 sites six times over 2022, calculating water quality index (WQI) and risk quotient values. The results identified elevated coliform, BOD, and nutrient pollution in surface waters, linking contamination to agricultural runoff and inadequate wastewater management.
Abundances and characteristics of sedimentary microplastics in the three main Vietnamese Rivers
Researchers characterized the abundance, types, and distribution of microplastics in sediments of Vietnam's three major rivers, contextualizing findings within Vietnam's status as one of the world's top plastic waste-polluting countries with approximately 3.1 million metric tons of mismanaged plastic waste annually.
Bước đầu xác định vi nhựa trong một số mẫu nước thải sinh hoạt thành phố Hà Nội
Researchers measured microplastic concentrations in domestic wastewater samples from Hanoi, Vietnam collected in 2021, finding highly variable concentrations from 1,046 to 78,153 particles per cubic meter with fiber microplastics under 1,000 micrometers dominating, contributing baseline data for urban microplastic monitoring in Vietnam.
Microplastics in sediments from urban and suburban rivers: Influence of sediment properties
Researchers measured microplastic concentrations in sediments from 12 sites across three Vietnamese rivers in the Red River Delta during dry and rainy seasons, finding concentrations ranging from 1,600 to 94,300 items per kg dry weight. Fiber-dominated microplastic contamination was strongly influenced by sediment properties including grain size and organic carbon content.
Riverine Microplastic Pollution in Vietnam: A Review of Current Scientific Knowledge and Legal Policies
This review summarizes current scientific knowledge and legal policies regarding microplastic pollution in Vietnam's rivers. Evidence indicates that microplastics are present in riverine surface water, sediments, and biota across Vietnam's canal and estuarine systems, with potential implications for human health through seafood consumption and drinking water.
Emergence of microplastics in the aquatic ecosystem and their potential effects on health risks: The insights into Vietnam
This review examines the growing microplastic contamination in Vietnam's waterways, where concentrations in surface water vary enormously depending on location. Highly populated cities like Hanoi and Ho Chi Minh City show the highest levels, with plastics entering water through agricultural runoff, textile production, and consumer products. The contamination poses health risks to millions of people through drinking water and seafood consumption.
Distribution of microplastics in surface water of tropical urban lakes: A case study in Ha Noi, Vietnam
Surface water surveys across three urban lakes in Hanoi found microplastics in all locations, with abundance highest in West Lake, which is surrounded by dense population, restaurants, and aquaculture activity. The findings confirm that urban lakes in developing Southeast Asian cities are significant microplastic repositories, with direct implications for the people who use these waters for recreation, fishing, and drinking water supply.
Phytoplankton characterization in a tropical tidal river impacted by a megacity: the case of the Saigon River (Southern Vietnam)
Scientists studied how phytoplankton communities vary seasonally and spatially in the Saigon River, Vietnam, finding that urban pollution from Ho Chi Minh City significantly shapes which species dominate. The study provides a baseline for tracking ecological change in a highly impacted tropical river.
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.
Assessment of stream quality and health risks in Indonesian river systems: A social analysis and water quality index approach
Researchers assessed water quality in three Indonesian rivers used by local communities, finding microplastics — primarily polyethylene and polypropylene — alongside elevated levels of iron, lead, and manganese, with residents reporting rising rates of skin disease and diarrhea linked to polluted water use.
Prevalence of Antibiotic Resistance Genes in the Saigon River Impacted by Anthropogenic Activities
Antibiotic resistance genes were detected at high levels in the Saigon River in Vietnam, linked to heavy contamination from antibiotics, heavy metals, and organic waste. Microplastics in such rivers can carry and spread drug-resistant bacteria, compounding risks to human health from contaminated water.
Relationship between Urban Growth and Water Pollution: Experience of Kano Metropolis, Nigeria
Researchers evaluated water pollution levels in two historic ponds in Kano, Nigeria, finding that rapid urban and population growth in the metropolis is causing significant deterioration of water quality through increased runoff and waste discharge into natural water bodies.
Ecological risk assessment of microplastics and heavy metals in Northern Vietnam's estuarine sediments: A case study of Ba Lat and Bach Dang
Researchers assessed microplastic abundance and ecological risk alongside ten heavy metals in estuarine sediments from the Ba Lat and Bach Dang estuaries of northern Vietnam's Red-Thai Binh River system, finding co-contamination patterns that pose compounded ecological risks to these biodiverse coastal ecosystems.
Evaluation of nitrate pollution sources in surface water across the typical rural-urban interface: a case study of Wen-Rui Tang River, China
Researchers identified the main sources of nitrate pollution in a rural-urban Chinese river, finding that human sewage and agricultural runoff were the primary contributors. While focused on nitrogen pollution, the study illustrates how mixed land use creates complex water quality challenges in rivers that also carry microplastics.
Characteristics, Contamination Levels, and Ecosystem Risk Assessment of Microplastics in Surface Water of a Highly Urbanized River from a Developing Country
Researchers characterized microplastic contamination in an urban river near a megacity in a developing country, finding concentrations of 350 to 660 particles per cubic meter of water. Polyethylene and polypropylene from household and municipal waste were the most common types, and a risk assessment found concerning contamination levels at several sampling sites. The study highlights how rivers in developing nations can serve as major pathways for microplastics to reach the ocean and enter the food chain.
Anthropogenic drivers of pollutant presence and composition in first-order streams of the Ona River System, Ibadan, Nigeria
Researchers assessed physicochemical parameters, heavy metals, and microplastic contamination across eight urban rivers in southwestern Nigeria, examining how rapid urbanization drives pollutant loading and shapes contaminant composition in first-order streams of the Ona River system.
Distribution of microplastics in surface water from Saigon River to Can Gio Sea
Researchers found widespread microplastic contamination in surface water samples from the Saigon River and Can Gio Sea in Vietnam, with concentrations and particle types shifting from river to coastal environments, reflecting the transport of land-based plastic pollution into marine systems.
Microplastic pollution and ecological risk in estuaries and coastal areas: A case study at Han River estuary, Da Nang city, Vietnam
This study measured microplastic pollution in Vietnam's Han River estuary and found plastic particles at every sampling location, with levels varying by season. While focused on environmental monitoring, the findings matter for human health because estuarine waters supply local fisheries and communities, creating direct exposure pathways through seafood consumption.
Estimation of Laundry-derived Microfiber Discharges into Wastewater: A Case Study in Hanoi City
Researchers analyzed 30 household laundry wastewater samples from Hanoi, Vietnam, finding extremely high microplastic concentrations averaging 96,296 particles per cubic meter, with fibers making up 99.6% of all particles and 12 polymer types identified.