Assessing heavy metals in surface sediments of the Seomjin River Basin, South Korea, by statistical and geochemical analysis

Yang, Hyung-Sik; Bong, Ki Moon; Kang, Tae-Woo; Hwang, Seung-Hoon; Na, Eun Hye

doi:10.1016/j.chemosphere.2021.131400

Cited by 18 publications

(6 citation statements)

References 64 publications

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“…The sediments in the Yeongsan River basin showed contradictory results to those of the Boseong River located in the Seomjin River basin in South Korea, which showed high As, Cr, and Ni pollution levels due to geological impact [48]. This suggested that sediments in the Yeongsan River basin depend on anthropogenic impact rather than geological impact.…”

Section: Spatial Distribution Of Land Use and Pollution Assessment By...mentioning

confidence: 83%

Potential Sources of Heavy Metals in Sediments of an Urban‒Agricultural Watershed and Relationship with Land Use Using a Statistical Approach

et al. 2022

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This study verified pollution levels through evaluation of the Sediment Quality Guidelines (SQGs), pollution load index (PLI), and potential ecological risk index (PERI) by analyzing the concentrations of heavy metals in sediments of an urban‒agricultural watershed in the Yeongsan River basin, South Korea. Statistical analyses were performed to determine the relationships between pollution levels and land use, and potential sources of pollution were identified. For spatial distributions, Pb, Zn, Cu, Cd, and Hg concentrations were highest at mid-upstream, but As, Cr, and Ni concentrations were similar at most sites. The polluted sites, which showed the potential toxicity toward benthic organisms in comparison to SQGs, were most frequently observed at mid-upstream. Moreover, PLI and PERI evaluations also confirmed levels of high anthropogenic pollution and the potential ecological risk at mid-upstream. The mid-upstream sites with high heavy metal pollutions showed high correlations with urban land use, which showed the highest distribution, implying a close relationship with anthropogenic impacts such as high population density and industrial complexes. Statistical analyses also confirmed that high heavy metal concentrations in the mid-upstream were closely related to urban land use. These findings suggest that urban areas are highly likely to cause anthropogenic heavy metal pollution in sediments as point or non-point sources such as domestic sewage and industrial wastewater flow into rivers.

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Section: Spatial Distribution Of Land Use and Pollution Assessment By...mentioning

confidence: 83%

Potential Sources of Heavy Metals in Sediments of an Urban‒Agricultural Watershed and Relationship with Land Use Using a Statistical Approach

et al. 2022

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“…Four geochemical fractions could be identi ed, which are exchangeable (step 1), reducible (step 2), oxidizable (step 3), and residual (step 4). The fractions are indicative of availability, therefore metals mobility decrease in the following sequence F1 > F2 > F3 > F4 (Yang et al 2021).…”

Section: Physical and Chemical And Grain Size Characterizationmentioning

confidence: 99%

Geochemical fractionation of trace metals and ecological risk assessment of surface sediments for a simulated dredging area in Sepetiba Bay - Brazil

Vicente

Trevisan

Oliveira

et al. 2023

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The Sepetiba Bay (Southeast Brazil) is a known Cd and Zn contaminated site that received spills of a large slag pile leachate from a Zn smelter. With important harbors, Sepetiba Bay demands periodic dredging operations which affect directly on the mobility of the metals. The main goal of this work was to assess metal mobility in sediments of a simulated dredging area in this tropical bay. To achieve this goal 18 superficial sediment samples were collected within this simulated area. pH and Eh of the interstitial water were measured in situ, while the sediments were analyzed for grain size, organic carbon and total nitrogen, total metals. Metal mobility assessment was evaluated with a sequential extraction procedure, proposed by the European Community Bureau of Reference (BCR). The results demonstrate that Cd and Zn are mainly associated with the exchangeable fraction (mean concentrations 1.4 mg kg− 1 and 149.4 mg kg− 1 respectively) and reducible fractions (mean concentrations 0.27 mg kg− 1 and 65.54 mg kg− 1 respectively), while Fe, Cr, Cu, Ni, and Al are associated with the residual fraction. Metals that are associated with the residual fraction are probably related to the mineral assembly of the sediment and should not represent a considerable environmental risk for the biota. The two metals associated with the exchangeable and reducible fraction respond to strongly reducing characteristics on surface sediments, which are affected by reduced hydrodynamics and high organic matter input. However, Cd and Zn could constitute a risk, mainly during resuspension events, when alterations of pH, and Eh, promoted by oxygenation of sediments can release them to the water column and result in increased association to the exchangeable fraction.

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“…To analyze the heavy metals in surface sediments, the parameters of benthic toxicity is a common method to determine the biological effects of water pollution [186]. Based on the analysis of the results using benthos as a biological indicator, the study revealed that the heavy metals in the research originate from industrial and agricultural activities [215].…”

Section: Biological Elementsmentioning

confidence: 99%

Surface Water Monitoring Systems—The Importance of Integrating Information Sources for Sustainable Watershed Management

2023

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The complex interactions from anthropogenic activities, climate change, sedimentation and the input of wastewater has significantly affected the aquatic environment and entire ecosystem. Over the years, the researchers have investigated water monitoring approaches in terms of traditional monitoring or even integrated systems to handle such an environmental assessment and predictions based on warning systems. However, research into the selection and optimisation of water monitoring systems by the combination of parallel approach in terms of sampling techniques, process analysis and results is limited. The research objectives of the present study are to evaluate the existing water monitoring systems based on the latest approach and then provide insights into factors affecting sensor implementation at sampling locations. Here we summarize the advancement and trends of various water monitoring systems as well as the suitability of sensor placement in the area by reviewing more than 300 papers published between 2011 and 2022. The research highlights the urgency of an integrative approach with regard to water monitoring systems including water quality model and water quantity model. A framework is proposed to incorporate all water monitoring approaches, sampling techniques, and predictive models to provide comprehensive information about environmental assessment. It was observed that the urgency of model-based approaches as verification and fusion of data assemble has the ability to improve the performances of the systems. Furthermore, integrated systems with the inclusion of a separate modeling approach through integrated -semi-mechanistic models, data science and artificial intelligence are recommended in the future. Overall, this study provides guidelines for achieving standardized water management by implementing integrated water monitoring systems INDEX TERMS infrastructure, integrated monitoring, water monitoring system, modelling, water quality

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Assessing heavy metals in surface sediments of the Seomjin River Basin, South Korea, by statistical and geochemical analysis

Cited by 18 publications

References 64 publications

Potential Sources of Heavy Metals in Sediments of an Urban‒Agricultural Watershed and Relationship with Land Use Using a Statistical Approach

Potential Sources of Heavy Metals in Sediments of an Urban‒Agricultural Watershed and Relationship with Land Use Using a Statistical Approach

Geochemical fractionation of trace metals and ecological risk assessment of surface sediments for a simulated dredging area in Sepetiba Bay - Brazil

Surface Water Monitoring Systems—The Importance of Integrating Information Sources for Sustainable Watershed Management

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