Impact of the Coal Mining on the Spatial Distribution of Potentially Toxic Metals in Farmland Tillage Soil

Li, Fang; Li, Xinju; Hou, Lizhu; Shao, Anran

doi:10.1038/s41598-018-33132-4

Cited by 35 publications

(14 citation statements)

References 39 publications

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“…The results show that the heavy metal elements in the surface soil within the research area are affected by human activities, and Hg is the most important pollution factor. This is consistent with the research result obtained by Li et al 45 .…”

Section: Resultssupporting

confidence: 94%

Spatial distribution characteristics and evaluation of soil pollution in coal mine areas in Loess Plateau of northern Shaanxi

Wang

Luo

Liu

et al. 2022

Sci Rep

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The ecological environment in Loess Plateau of Northern Shaanxi is fragile, so the soil pollution caused by the exploitation of coal resources cannot be ignored. With Shigetai Coal Mine in Loess Plateau of Northern Shaanxi as the object of study for field survey and sampling, the content of heavy metals in soil is analyzed, the environmental pollution in the research area is evaluated by the single factor pollution index method, comprehensive pollution index method and potential ecological risk index method, and the spatial distribution characteristics of heavy metals are discussed by the geostatistics method. According to the study results, the average contents of heavy metals Hg, Cd, Pb and Cr are 2.03, 1.36, 1.11 and 1.23 times of the soil background values in Shaanxi Province respectively and the average contents of other heavy metals are lower than the soil background values in Shaanxi Province; Hg and Cd show moderate variation while As, Pb, Cr, Zn, Ni and Cu show strong variation; the skewness coefficients and kurtosis coefficient of Cd, As and Cu in the soil within the research area are relatively high, and these elements are accumulated in large amounts. Single factor pollution index (Pi) and potential ecological risk index (E) indicate that heavy metal Hg is the main pollution factor and mainly distributed in the east and north of the research area. The comprehensive index of potential ecological risk (RI) of the research area is 1336.49, showing an extremely high ecological risk, and the distribution characteristics of potential ecological risk are consistent with that of potential ecological risk index (E) of Hg. The results of ecological risk warning show that Hg is in a slight warning status, while Cd, Pb and Cr are in a warning status. The areas with high ecological risk warning values are mainly distributed in the east and north, and the whole research area shows relatively obvious zonal distribution law. The soil is disturbed greatly during the coal mining, so the ecological governance of the mine area shall adapt to the local natural conditions and regional environmental characteristics and follow the principle of “adjusting governance measures based on specific local conditions and classifications”. An environmentally sustainable governance manner shall be adopted to realize the protection of the ecological environment and high-quality development of coal resources.

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Section: Resultssupporting

confidence: 94%

Spatial distribution characteristics and evaluation of soil pollution in coal mine areas in Loess Plateau of northern Shaanxi

Wang

Luo

Liu

et al. 2022

Sci Rep

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“…Our findings expect to offer a theoretical support for Cr(VI) transformation of Cr(VI) to Cr(III) which has lower toxicity and less environmental mobility in soils. The methods used in the study might guide Cr(VI) restoration of soils in the reported coal mining areas where up to 500 mg Cr/kg soil in both coal mining soils and agricultural soils [ 48 , 49 ] and the 18–35 g TOC/kg soil in coal mining soils [ 50 ] have been reported.…”

Section: Discussionmentioning

confidence: 99%

Effect of TOC Concentration of Humic Substances as an Electron Shuttle on Redox Functional Groups Stimulating Microbial Cr(VI) Reduction

Zhang

Duan

Jiang

et al. 2022

IJERPH

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Humic substances as an electron shuttle play an essential role in the biogeochemistry processes. However, the influence of total organic carbon (TOC) concentrations of humic substances on microbial Cr(VI) reduction remains unclear. In this study, the rates and extents of Cr(VI) reduction by Shewanella oneidensis MR-1 in the presence of Leonardite humic acids (LHA) and Pahokee peat humic acids (PPHA) with different TOC concentrations were evaluated. We found that the enhanced reduction in Cr(VI) was associated with TOC concentrations of 2.5–50 mg C/L of HA samples. The result shows that HA as an electron shuttle impacted both rates and extents of microbial Cr (VI) reduction, which delivered differently in terms of low TOC concentration range of 2.5 to 15 mg C/L and high concentration range of 15–50 mg C/L. The rates of Cr(VI) reduction significantly enhanced in the low TOC concentration range of HA compared to a high concentration range. The highest acceleration rate of Cr(VI) reduction was achieved at 15 mg C/L of HA. The quinone-like fluorophore was responsible for the main redox-active functional groups of HA by the three-dimensional excitation-emission spectroscopy. The fluorescence intensity of quinone-like fluorophore of HA in the low TOC concentration range was positively correlated with its acceleration coefficient, corresponding to the highest microbial Cr(VI) reduction rate obtained in 15 mg C/L of HA. These findings highlighted the effect of the TOC concentration of HA on microbial Cr(VI) reduction processes. It emphasized that the low TOC concentration of HA contributed to the high rates of Cr(VI) reduction, which is critical for better understanding the fate of Cr(VI) and evaluating the effectiveness of Cr(VI) restoration strategies in the future.

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“…Ten of these samples were tested for arsenic, beryllium, cadmium, nickel, lead, antimony, selenium and vanadium. These heavy metals are common by-products of coal mining and coal mining waste (Lemly 2009;Li et al 2018;National Research Council 2008) and the samples were tested to determine the effect of coal mining and coal mining waste on Mill Creek Ravine and Ross Acreage. The ten samples were chosen from across both Area 1 and Area 2: five were from a series of discrete creek silt layers covering occupation layers in Area 2, while the other five were taken from levels with high concentrations of coal waste in Area 1.…”

Section: Archaeology Of Ross Acreagementioning

confidence: 99%

Life on the fence line. Early 20th-century life in Ross Acreage

2020

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Despite widespread attention to the recent past as an archaeological topic, few archaeologists have attended to the particular social and ecological stakes of one of the most defining material features of contemporary life: the long-term effects of toxic industrial waste. Identifying the present era as the high Capitalocene, this article highlights the contemporary as a period caught between the boom-and-bust cycles of capitalist production and the persistence of industrial waste. Drawing on an archaeological case study from Edmonton, Alberta, we outline how the working-class shanty town community of Ross Acreage (occupied 1900–1950) was formed in relation to the industrial waste that suffused its landscape. Drawing on data from both archaeological excavation and environmental testing, this article argues that the community of Ross Acreage was defined materially by its long-term relationship with industrial waste, what we term a ‘fence-line community’.

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Impact of the Coal Mining on the Spatial Distribution of Potentially Toxic Metals in Farmland Tillage Soil

Cited by 35 publications

References 39 publications

Spatial distribution characteristics and evaluation of soil pollution in coal mine areas in Loess Plateau of northern Shaanxi

Spatial distribution characteristics and evaluation of soil pollution in coal mine areas in Loess Plateau of northern Shaanxi

Effect of TOC Concentration of Humic Substances as an Electron Shuttle on Redox Functional Groups Stimulating Microbial Cr(VI) Reduction

Life on the fence line. Early 20th-century life in Ross Acreage

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