Spatial characteristics of heavy metal contamination and potential human health risk assessment of urban soils: A case study from an urban region of South India

Adimalla, Narsimha; Chen, Jie; Qian, Hui

doi:10.1016/j.ecoenv.2020.110406

Cited by 180 publications

(83 citation statements)

References 34 publications

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“…The results show that besides Fe, the most abundant metals in the study area were Zn and Pb. Several studies have reported that Zn is the most abundant heavy metal in urban soil (Yadav et al, 2019;Zhao et al, 2019;Egbueri et al, 2020;Jiang et al, 2020;Jin and Lv, 2020), while in some studies, Pb is found in the highest concentration (Harvey et al, 2017;Škrbić et al, 2018;Adimalla et al, 2020). However, Chen et al (2020) reported Cr as the most abundant toxic metal in soil.…”

Section: Descriptive Statisticsmentioning

confidence: 99%

“…In the case of Pb and Zn, there are a number of individual samples with concentrations well above the intervention limits. This indicates that at certain locations there has been a leakage of materials containing these metals into the soil, or intensive traffic activity as vehicle fuel is a major source of Pb contamination in soils (Roy et al, 2019;Adimalla et al, 2020). These sites require remedial action, and the soil should be cleared before any further management decision is made.…”

Section: Descriptive Statisticsmentioning

confidence: 99%

“…Anthropogenic activities were the primary source of these two heavy metals. Traffic vehicle emission is generally considered to be the most important source of Pb and Zn (Men et al, 2018;Adimalla et al, 2020;Chen et al, 2020), although the accumulation of Pb and Zn in urban soils could, to some extent, be dependent on atmospheric deposition (Xie et al, 2019). It has also been reported that most of the risk from road dust, which is resuspended and deposited in the area, could be attributed to Pb (Roy et al, 2019).…”

Section: Positive Matrix Factorizationmentioning

confidence: 99%

“…Accordingly, this location can now be considered both industrial and urban. Recently, numerous studies on heavy metal contamination of urban and industrial soils have been carried out (Khademi et al, 2019;Roy et al, 2019;Xie et al, 2019;Yadav et al, 2019;Adimalla et al, 2020;Chen et al, 2020;Egbueri et al, 2020;Li et al, 2020). Khademi et al (2019) demonstrated that concentrations of heavy metals in soils of urban areas are higher than the background values, due to industrial activities; however, industrialization does not appear to significantly affect the level of most soil elements.…”

Section: Introductionmentioning

confidence: 99%

“…Using soil pollution indices, such as enrichment factor (EF), geoaccumulation index (I geo ) and pollution load index (PLI), gives information on the soil quality, and the degree of contamination for each sample, based on individual metals (Müller, 1969;Tomlinson et al, 1980; FIGURE 1 | Map of the study area and distribution of sampling points. Men et al, 2018;Khademi et al, 2019;Adimalla et al, 2020;Egbueri et al, 2020;Monged et al, 2020). The potential ecological risk can be estimated based on the risk index (RI) for each sample.…”

Section: Introductionmentioning

confidence: 99%

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Ecological Risk Assessment of Heavy Metals in the Soil at a Former Painting Industry Facility

Radomirović

Cirovic

Maksin

et al. 2020

Front. Environ. Sci.

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Soil samples from the site of the former largest paint and varnish factory in ex-Yugoslavia were analyzed for arsenic and eight heavy metals (Pb, Cd, Zn, Cr, Ni, Cu, Fe, and Hg). Several additional soil properties (pH, sulfur, nitrogen, phosphorus, and water content) were also measured. Multivariate analysis showed strong correlations between Pb and Zn; and a moderate correlation between Cu and Ni. There was no correlation between heavy metals and any of the analyzed soil properties parameters. A factor analysis grouped most heavy metals, except Cd, which showed different behavior, and Fe and As, which associated with soil properties. The soil samples were clustered into two distinctive groups. Positive matrix factorization receptor modeling clearly identified Zn and Pb as belonging to the traffic vehicle factor. The second factor dominating arsenic was industrial chemical emissions, while the third factor containing most of the heavy metals was attributed to natural background variation. The last non-metallic factor, dominated by sulfur, was the result of past activities in the paint facility. The average enrichment factor values were for the metals analyzed were: 0.73; 0.71; 2.4; 0.58; 2.3; 0.87; 1.6; and 0.76; for Cr, Cd, Pb, Ni, Zn, Cu, As, and Hg, respectively. Only moderate soil enrichment by Pb and Zn was found. The geoaccumulation index values showed a moderately polluted soil with Pb and Zn, but most contributing to the ecological risk were Cd with 63% and Hg with 19%. These two metals are of major concern in this case study due to their high toxicity, even though they are present at very low concentrations. Generally, a moderate ecological risk was estimated for most soil samples, except for a small number of high-risk samples. Spatial distribution mapped three severely polluted sub-areas. In general, the paint and varnish industry moderately contributes to the contamination of soil. The main ecological risk from metal contamination is not related to the paint technological production process itself, but from other activities at the site that deposit of heavy metals into the soil.

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Section: Descriptive Statisticsmentioning

confidence: 99%

Section: Descriptive Statisticsmentioning

confidence: 99%

Section: Positive Matrix Factorizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Ecological Risk Assessment of Heavy Metals in the Soil at a Former Painting Industry Facility

Radomirović

Cirovic

Maksin

et al. 2020

Front. Environ. Sci.

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Accumulation and health implications of metals in topsoil of an urban riparian zone adjacent to different functional areas in a subtropical city

Zeng

Liu

et al. 2021

J of Env Quality

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The riparian zone is a river-land ecotone, and its environmental conditions have a significant effect on the river ecosystem and population health. In this study, As, Cu, Cr, Cd, Mn, Fe, Ni, Pb, and Zn in the topsoils of urban riparian zones in a subtropical city in southeast China were quantitatively estimated by inductively coupled plasmaoptical emission spectrometry. The geoaccumulation index and health risk evaluation model were adopted to assess the accumulation characteristic and health risk of residents' exposure to metals. Principle component analysis was used to determine the source of metals. The results showed that the mean contents of metals (except Fe) were higher than the soil background value, but none of the metal contents exceeded the mass limit of environmental quality standards. The order of the geoaccumulation index was Cd > Mn > Cu > Cr > Pb > Zn > As > Ni > Fe. The contamination level of Cd was classified as slight, whereas the other metals did not contribute to pollution.The spatial distribution of metals in the riparian zone was compatible with the pattern of functional zones in the adjacent urban areas, where levels of Cr, Cd, Fe, Mn, and Ni were higher in commercial areas, as were Pb and Zn in under-construction land and As in residential and industrial areas. Carcinogenic risks of Cr, As, and Pb were acceptable. The hazard index indicated no significant noncarcinogenic risks from any metals. However, noncarcinogenic risks of metals other than Mn were higher for children than for adults, and the primary exposure route of metal into the human body was ingestion for children and inhalation for adults. Principle component analysis indicated that the primary sources of Cr, Ni, Mn, Cu, and Fe were pedogenic processes and mineral weathering, whereas Zn, As, Pb, and Cd mainly originated from anthropogenic sources, specifically, Zn from transportation emission, Pb from transportation emission and industry waste, As from coal combustion and residential waste, and Cd from pigments/paint used in commercial buildings, urban greening, consumer waste, and transportation emission.

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Theoretical Approaches to Risk Reduction in Urban Form

Monzalvo

Ortega-Montoya

2022

Humanitarian Logistics From the Disaster Risk Reduction Perspective

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Spatial characteristics of heavy metal contamination and potential human health risk assessment of urban soils: A case study from an urban region of South India

Cited by 180 publications

References 34 publications

Ecological Risk Assessment of Heavy Metals in the Soil at a Former Painting Industry Facility

Ecological Risk Assessment of Heavy Metals in the Soil at a Former Painting Industry Facility

Accumulation and health implications of metals in topsoil of an urban riparian zone adjacent to different functional areas in a subtropical city

Theoretical Approaches to Risk Reduction in Urban Form

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