Tropical climate effect on the toxic heavy metal pollutant course of road-deposited sediments

Santos, Paula Rafaela Silva dos; Fernandes, Glauber José Turolla; Moraes, Edgar P.; Moreira, Lúcio Flávio Ferreira

doi:10.1016/j.envpol.2019.05.043

Cited by 18 publications

(15 citation statements)

References 28 publications

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“…Spatial variation assessment helps to lessen the heavy metal pollution in practical way. In the tropical area, studies even showed that tropical climate can influence the toxic heavy metal pollutant course of road-deposited sediments [2]. Our results verified that land cover alongside the road had great influence on heavy metal deposition.…”

Section: Quantification Of the Influencing Factors Of Heavy Metals Ansupporting

confidence: 74%

“…Previous studies usually used the correlation and PCA method to identify the pollution sources [2,51]. In our results, the PCA method was efficient and screened out the two components.…”

Section: Heavy Metal Variations Associated With Roadsmentioning

confidence: 62%

“…The results distinguished that As, Cd, Cu, Pb and Zn originated from a common source due to road traffic [51]. A similar study in Brazil showed that road-deposited sediments accumulate a variety of toxic substances, and the soils were moderately polluted for Cu and slighted polluted for Zn and Pb [2]. Studies verified that Zn, Cu, Pb, and Cd are likely due to tire material degrading and traffic volume causing greater brake pads.…”

Section: Heavy Metal Variations Associated With Roadsmentioning

confidence: 62%

“…While there are many studies investigating roadside pollution in China, especially in urban areas, no studies thus far have demonstrated the spatial variability of heavy metals in tropical ecosystems [2,[32][33][34]. The variation and accumulation of metallic pollutants along roads in this region require further study.…”

Section: Introductionmentioning

confidence: 95%

“…Roads, as an important linear landscape element, affect both abiotic and biotic ecosystems, especially the vegetation composition and soil properties along them [1,2]. In recent decades, studies on the ecological and environmental effects of road traffic have increased significantly [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

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Effects of Landscape Features on the Roadside Soil Heavy Metal Distribution in a Tropical Area in Southwest China

et al. 2021

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Soil heavy metals along roadsides pose a great threat to ecosystems while their spatial variations and influencing factors still remain unclear in some regions, especially in tropical areas with complex landscape characteristics. Our study was carried out to determine how the land use, vegetation characteristics, topographical factors and distance to the road affect the soil heavy metal distribution. Taking Jinghong county in Yunnan Province, Southwest China as a case, soil samples were collected at different distances off roads and canonical correspondence analysis (CCA) methods were used to determine the relative importance of different factors. Our results showed that heavy metal sources were obtained mainly from the road, based on the principle component analysis (PCA) identification. There were no obvious trends of soil quality index (SQI) with distance to the road in natural soils, while SQI nutrients and SQI metals in farmlands had a decreasing and increasing trend, respectively, which could both be expressed by logarithm models. However, soil properties showed little differences for road levels while they showed significant differences under land use types. The CCA further showed that heavy metal variations in natural soils were jointly affected by distance, plant coverage, relative elevation and soil properties in decreasing order.

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Section: Quantification Of the Influencing Factors Of Heavy Metals Ansupporting

confidence: 74%

“…Previous studies usually used the correlation and PCA method to identify the pollution sources [2,51]. In our results, the PCA method was efficient and screened out the two components.…”

Section: Heavy Metal Variations Associated With Roadsmentioning

confidence: 62%

Section: Heavy Metal Variations Associated With Roadsmentioning

confidence: 62%

Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

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Effects of Landscape Features on the Roadside Soil Heavy Metal Distribution in a Tropical Area in Southwest China

et al. 2021

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Estimating metal loading into the sea from tidal rivers using total suspended solids and water quality models

Yao

Jiang

Wei

et al. 2021

Integr Envir Assess & Manag

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Metals are mainly transported with suspended sediments in tidal rivers, and it is difficult to describe the transformation process of metals. Freely dissolved metals and suspended metals (including acid-soluble, reducible, oxidizable, and residual metals) were separately analyzed according to a sequential extraction scheme. The regression of the observed suspended metals and total suspended solids (TSS) concentrations allowed us to couple the two pollutant types. TSS is a highly dynamic parameter, and a model can be developed to simulate TSS transport. Thus, a method including the following five steps was proposed to estimate the loadings of metals entering the sea using TSS concentrations and water quality models: (1) collecting and observing basic information on the hydrological conditions, pollution sources, and water quality of the studied river; (2) obtaining a regression model between the suspended metals and TSS and analyzing the potential of establishing a suspended metal flux model; (3) introducing a model describing the fluxes of water-soluble metals into the sea; ( 4) establishing a calculation model to determine the fluxes of suspended metals into the sea; and (5) characterizing the fluxes of metals into the sea. The method was programmed, and metal concentrations and fluxes could be characterized quickly when the basic river data were sufficient. In addition, if regional development scenarios could be set, metal loadings in all scenarios could be predicted through the procedure developed herein, and some effective suggestions on regional sustainable development might be proposed for decision makers.

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Traffic-related polycyclic aromatic hydrocarbons (PAHs) occurrence in a tropical environment

Santos¹,

Moreira

Moraes

et al. 2021

Environ Geochem Health

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Tropical climate effect on the toxic heavy metal pollutant course of road-deposited sediments

Cited by 18 publications

References 28 publications

Effects of Landscape Features on the Roadside Soil Heavy Metal Distribution in a Tropical Area in Southwest China

Effects of Landscape Features on the Roadside Soil Heavy Metal Distribution in a Tropical Area in Southwest China

Estimating metal loading into the sea from tidal rivers using total suspended solids and water quality models

Traffic-related polycyclic aromatic hydrocarbons (PAHs) occurrence in a tropical environment

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