Heavy metal toxicity in the water column and benthic sediments of a degraded tropical stream

Akindele, Emmanuel O.; Omisakin, Omobukola D.; Oni, Oluwagbemiga A.; Aliu, Olanrewaju O.; Omoniyi, Gbenga E.; Akinpelu, Oluwaseun T.

doi:10.1016/j.ecoenv.2019.110153

Cited by 47 publications

(21 citation statements)

References 21 publications

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“…Before industrial revolution it was rare to think about water scarcity and water pollution. But after suffering many health hazards due to water pollution it was become prime concern [2]. In recent years, many developed countries like USA, Japan and South Korea developed efficient technology and national plan to ensure safe water to their citizens.…”

Section: Introductionmentioning

confidence: 99%

Urban river pollution in Bangladesh during last 40 years: potential public health and ecological risk, present policy, and future prospects toward smart water management

Uddin

Jeong

2021

Heliyon

117

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River water is very much important for domestic, agriculture and industrial use in Bangladesh which is in critical condition from long time based on research data. During last 40 years, extreme pollution events occurred in peripheral rivers surrounding Dhaka city and Karnaphuli River in Chittagong city. Present data showed that other urban rivers are also in critical condition especially Korotoa, Teesta, Rupsha, Pashur and Padma. The pollutants flowing with water made a severe pollution in downstream areas of rivers. Metals concentrations in river water was found to be higher in dry season. Dissolve oxygen (DO) was nearly zero in Buriganga River and several points in Turag, Balu, Sitalakhya and Karnaphuli River. NO 3 - , NO 2 - and PO 4 3- pollution occurred in different rivers. Zn, Cu, Fe, Pb, Cd, Ni, Mn, As and Cr concentration was above drinking water standard in most of the river and some metals was even above irrigation standard in water from several rivers. Sediment data showed very much higher metal concentrations in most of the rivers especially peripheral rivers in Dhaka and Karnaphuli, Korotoa, Teesta, Rupsha and Meghna River. Metal concentrations in sediment was above US EPA threshold value in most of the rivers. Metal concentrations in fish and agricultural crops showed that bioaccumulations of metals had occurred. The concentration of metals showed the trend like: water

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Section: Introductionmentioning

confidence: 99%

Urban river pollution in Bangladesh during last 40 years: potential public health and ecological risk, present policy, and future prospects toward smart water management

Uddin

Jeong

2021

Heliyon

117

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“…With the advancement of society, the process of urban development, agricultural and industrial activities in lake basins, such as urban transportation, fossil fuel combustion, mining, and metal smelting, and the use of fertilizers and pesticides have largely resulted in aquatic environmental pollution. PTEs impose a toxic or chronic effect on the organisms in lakes, especially benthic organisms [11], and accumulate in organisms and cause harm to humans [12]. Therefore, the geochemical characteristics, source analysis, and pollution assessment for PTEs in lake sediments have an important practical significance.…”

Section: Introductionmentioning

confidence: 99%

Spatial Distribution and Ecological Risks of the Potentially-Toxic Elements in the Surface Sediments of Lake Bosten, China

Abuduwaili

Liu

2020

Toxics

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Aiming at the pollution and ecological hazards of the lake sediments of Bosten Lake, once China’s largest inland lake, the spatial distribution and influencing factors of the potentially-toxic elements in its surface sediments were studied with the methods of spatial autocorrelation, two-way cluster analysis, and redundancy analysis. Finally, based on the background value of potentially-toxic elements extracted from a sediment core, a comprehensive evaluation of the risk of these potentially-toxic elements was conducted with the potential-ecological-risk index and the pollution-load index. With data on the grain size, bulk-rock composition, and organic matter content, this comprehensive analysis suggested that with the enrichment of authigenic carbonate minerals, the content of potentially-toxic elements exhibited distinctive characteristics representative of arid regions with lower values than those in humid region. All potentially-toxic elements revealed a significant spatial autocorrelation, and high-value areas mainly occurred in the middle and southwest. The content of potentially-toxic elements is related to Al2O3, K2O, Fe2O3, TiO2, MgO, and MnO, and the storage medium of potentially-toxic elements mainly consists of small particles with a grain size <16 μm. The pollution load index (PLI) for the whole lake due to the potentially-toxic elements was 1.31, and the surface area with a PLI higher than 1 and a moderate pollution level accounted for 87.2% of the total lake area. The research conclusions have an important scientific value for future lake ecological quality assessment and lake environment governance.

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“…A Tabela 2 mostra as médias e desvios padrão das concentrações de metais no sedimento dos córregos da Microbacia Tarumã. Os metais Cd, Pb e Cr total são biotóxicos, mesmo em pequenas proporções nos sedimentos bentônicos dos sistemas aquáticos, pois são elementos não essenciais aos processos biológicos e podem causar riscos ecológicos, com potencial bioconcentrador nos organismos, podendo provocar danos ecotoxicológicos para a biota aquática (Akindele et al, 2020;Cotta e Rodrigues, 2020). Segundo a literatura, o aumento da concentração destes metais não essenciais nos recursos hídricos está diretamente relacionado a fontes antropogênicas, com o uso de agroquímicos e descargas de esgoto urbano (Yi et al, 2011;Akindele et al, 2020).…”

Section: Análise E Determinação De Metaisunclassified

“…Os metais Cd, Pb e Cr total são biotóxicos, mesmo em pequenas proporções nos sedimentos bentônicos dos sistemas aquáticos, pois são elementos não essenciais aos processos biológicos e podem causar riscos ecológicos, com potencial bioconcentrador nos organismos, podendo provocar danos ecotoxicológicos para a biota aquática (Akindele et al, 2020;Cotta e Rodrigues, 2020). Segundo a literatura, o aumento da concentração destes metais não essenciais nos recursos hídricos está diretamente relacionado a fontes antropogênicas, com o uso de agroquímicos e descargas de esgoto urbano (Yi et al, 2011;Akindele et al, 2020). Não obstante, os sedimentos do fundo de rios fornecem nutrientes e habitat para uma grande variedade de organismos bentônicos e a ingestão contínua destes sedimentos por peixes que exploram o fundo dos rios pode levar à bioacumulação de contaminantes no organismo, podendo causar efeitos genotóxicos (Jesus et al, 2014;Voigt et al, 2016).…”

Section: Análise E Determinação De Metaisunclassified

Avaliação do índice de vegetação e da concentração de metais em sedimentos na Microbacia Tarumã, Mato Grosso do Sul, Brasil

Viana

Francisco

Cardoso

et al. 2020

RSD

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The aim of the study was to evaluate quantitative physical-chemical parameters of water from streams in the Tarumã microbasin (MS, Brazil), to quantify metals (Cd, Pb, Cr, Cu, Fe, Zn and Ni) in the bottom sediments of these streams and to evaluate quali-quantitatively the vegetation index of normalized difference of locations (NDVI) by means of satellite images.Water turbidity and electrical conductivity values were highest at the nearest points in the urban region. In the NDVI analysis, sites P1, P2 and P4 presented reduced local ciliary vegetation, classified as low or very low. At sites P3, P5 and P6 we found higher proportions of vegetation at moderate and low levels. Regarding metals in sediments, all sampled sites presented metal concentrations below the limits established by current legislation. The low rate of vegetation cover around streams in the Tarumã microbasin, especially in spring sites, may compromise the equilibrium of this system.

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Heavy metal toxicity in the water column and benthic sediments of a degraded tropical stream

Cited by 47 publications

References 21 publications

Urban river pollution in Bangladesh during last 40 years: potential public health and ecological risk, present policy, and future prospects toward smart water management

Urban river pollution in Bangladesh during last 40 years: potential public health and ecological risk, present policy, and future prospects toward smart water management

Spatial Distribution and Ecological Risks of the Potentially-Toxic Elements in the Surface Sediments of Lake Bosten, China

Avaliação do índice de vegetação e da concentração de metais em sedimentos na Microbacia Tarumã, Mato Grosso do Sul, Brasil

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