Concentrations, distribution, and risk assessment of heavy metals in the iron tailings of Yeshan National Mine Park in Nanjing, China

Young, G.; Chen, Yanqing; Yang, Gang

doi:10.1016/j.chemosphere.2021.129546

Cited by 43 publications

(22 citation statements)

References 42 publications

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“…The level of soil contamination by individual metals in the study area is given, while the average concentration of Zn was 7.07 mg/kg (in comparison with the results obtained in our study—131.3 mg/kg), Cu—6.88 mg/kg (in comparison—64.61 mg/kg), Cr—1.03 mg/kg (in comparison—9.802 mg/kg). Increased concentrations of Mn, Cu, Zn and other HMs from Yeshan iron mine tailings in the Jiangsu Province of China are also reported in the work [ 47 ].…”

Section: Resultsmentioning

confidence: 55%

Conditions Affecting the Release of Heavy and Rare Earth Metals from the Mine Tailings Kola Subarctic

Krasavtseva

Maksimova

Макаров

2021

Toxics

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In the Kola Subarctic, a mining industry has developed, which is a source of environmental pollution with heavy metals. The objects of study were the tailings of three large mining enterprises in the region: apatite-nepheline, complex and loparite ores. The geotechnical characteristics were studied, and the granulometric composition of the samples was established. The main minerals that make up the material of ore dressing tailings have been determined. Using inductively coupled plasma mass spectrometry, the content of trace elements, in particular heavy metals and rare earth elements, has been established. The enrichment factor, the geoaccumulation indexes, the potential ecological risk index factor and the potential environmental hazard index have been calculated. Priority pollutants characteristics for specific objects have been identified. It is noted that the finely dispersed material of the tailings of loparite and complex ores is 1.5–3 times enriched in heavy and rare earth metals in comparison with the total material of the tailings. In laboratory conditions, experiments were carried out to simulate the process of interaction of dust particles with soil solutions containing different amounts of dissolved organic matter and at average seasonal temperatures. It was found that a decrease in the pH of the solution and an increase in the amount of organic carbon and temperature lead to the mobilization of heavy and rare earth metals from the tailings.

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Section: Resultsmentioning

confidence: 55%

Conditions Affecting the Release of Heavy and Rare Earth Metals from the Mine Tailings Kola Subarctic

Krasavtseva

Maksimova

Макаров

2021

Toxics

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“…Due to technical limitations, a large number of iron tailings in China are stored in tailings ponds every year because they can not be effectively used, which also leads to a series of environmental and safety problems. 1,2 Therefore, how to effectively utilize tailings and fully tap its potential utilization value has become a hot research topic. 3–7…”

Section: Introductionmentioning

confidence: 99%

Rigid polyurethane foam composites based on iron tailing: Thermal stability, flame retardancy and fire toxicity

et al. 2022

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In order to explore the potential utilization value of iron tailings, the typical solid waste-iron tailings was introduced into rigid polyurethane foam (RPUF) as a flame retardant filler in this paper. The flame retardant performance, combustion performance, gas-phase products and char residue’s related properties of RPUF/ITS composites were systematically investigated by limiting oxygen index, thermogravimetric (TG), cone calorimetry (CCT) and thermogravimetric-infrared spectrometry (TG-FTIR). The results showed that ITS improved the overall thermal stability of the composites, and the T-5%, T-50%, Tmax1, Tmax2 and char residue rates were all higher than those of the pure samples. The CCT indicated that ITS had a certain effect on smoke suppression and heat release reduction. The peak heat release rate of RPUF-6 was reduced by 22.75% compared with that of the pure sample, and the total smoke release of RPUF-2 was reduced by 25.36%. Smoke factor (SF), fire growth rate index and fire performance index indicated that ITS reduced the fire risk of RPUF/ITS composites. TG-FTIR showed that ITS inhibited the decomposition of RPUF/ITS composites, and the release intensity of hydrocarbons, CO2, isocyanate compound, CO, aromatic compounds and esters decreased significantly. TG, MCC, scanning electron microscope and Raman implied that ITS promoted the formation of a dense char layer in RPUF and improved the heat resistance of the char layer.

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“…Chen et al, 2016;Y. Chen et al, 2018;Young et al, 2021;Zhou et al, 2017). Geostatistical analysis combined with Kriging interpolation statistics can reveal the spatial distribution and differentiation of soil metals (Yang et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…Multivariate statistics and geostatistics are the main tools used to analyze metal distributions and their sources. Multiple linear regression analysis, principal component and correlation analyses, and single factor analysis and multivariate analysis of variance can be applied to determine the correlations between multiple factors and to explain the relationships between elements (Acosta et al, 2011; H. Chen et al, 2016; Y. Chen et al, 2018; Young et al, 2021; Zhou et al, 2017). Geostatistical analysis combined with Kriging interpolation statistics can reveal the spatial distribution and differentiation of soil metals (Yang et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Effects of mining activities on the distribution, controlling factors, and sources of metals in soils from the Xikuangshan South Mine, Hunan Province

Xie

Ren

Hursthouse

et al. 2021

Integr Envir Assess & Manag

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In this study, we analyzed 53 topsoil samples from the Xikuangshan South Mine in Hunan Province to investigate the distribution characteristics of pH and the concentrations of selected metals to determine the controlling factors and identify their sources. Kriging interpolation, correlation analysis, principal component analysis, the index of the geoaccumulation index, and Hakanson's potential ecological risk were applied. The results show that the mean values of Pb, As, Cd, and Sb in the study area were larger than the background value of mountain soil in Hunan Province, and only the average Cr concentration was slightly lower than the background value. The spatial distributions of pH and five metals in the soil were very different, indicating that pH had no significant effect on the distribution of the metals. The wind, rivers, and land-use patterns in different regions of the study area may be the main reasons for their distribution patterns. The correlation component and principal component analysis revealed that Pb showed positive correlations with Cr and Cd, respectively, and Sb-As and Cr-Cd showed strong paired correlations. The cumulative proportion of the first two components accounted for 70.516% of the total variance, which suggests that mining activities are a major source of As and Sb, whereas Pb, Cr, and Cd were derived from natural and anthropogenic sources. The geoaccumulation index revealed that the major pollutants in the soils were mainly Cd, followed by Sb and As. The soils in the study area were moderately contaminated with Pb and lightly polluted by Cr. The ecological hazards of each metal in descending order were Cd > Sb > As > Pb > Cr. The index of the comprehensive potential ecological risk for metals indicated that the Xikuangshan South Mine is at or above a moderate ecological risk level, with an extremely strong potential for ecological risks posed by Cd and Sb.

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Concentrations, distribution, and risk assessment of heavy metals in the iron tailings of Yeshan National Mine Park in Nanjing, China

Cited by 43 publications

References 42 publications

Conditions Affecting the Release of Heavy and Rare Earth Metals from the Mine Tailings Kola Subarctic

Conditions Affecting the Release of Heavy and Rare Earth Metals from the Mine Tailings Kola Subarctic

Rigid polyurethane foam composites based on iron tailing: Thermal stability, flame retardancy and fire toxicity

Effects of mining activities on the distribution, controlling factors, and sources of metals in soils from the Xikuangshan South Mine, Hunan Province

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