Ecological Risk Evaluation of Heavy Metal Pollution in Soil Based on Simulation

Sun, Yongye

doi:10.15244/pjoes/68889

Cited by 15 publications

(9 citation statements)

References 20 publications

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“…where E i is the potential ecological risk factor for a given heavy metal, i; T i is the toxic coefficient of a heavy metal, i; C i is the concentration of the heavy metal; and C O is the background value of the corresponding heavy metal in Xuzhou [35]. Based on previously published research, the toxic coefficients of Cr, Cd, As, Hg, Zn, and Pb were 2, 30, 10, 40, 1, and 5, respectively [36,37]. The potential ecological risk (RI) posed by heavy metals was classified into four grades (see Table 1): RI < 150 (low ecological risk), 150 ≤ RI < 300 (moderate ecological risk), 300 ≤ RI < 600 (high ecological risk), and RI ≥ 600 (serious ecological risk) [38].…”

Section: Pollution Indexmentioning

confidence: 99%

Distribution Characteristics and Pollution Assessment of Soil Heavy Metals under Different Land-Use Types in Xuzhou City, China

Fang

Jiang

2019

Sustainability

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Xuzhou, as a mining city in China, has been experiencing 130 years of coal mining and processing. To explore the spatial distribution characteristics and pollution status of soil heavy metals (Cr, Cd, As, Hg, Zn, and Pb) under different land-use types, a total of 2697 topsoil samples were collected in all of the areas (except for water) of Xuzhou in 2016. Overall, the mean concentrations of Cr (70.266 mg/kg), Cd (0.141 mg/kg), As (10.375 mg/kg), Hg (0.036 mg/kg), Zn (64.788 mg/kg), and Pb (24.84 mg/kg) in Xuzhou soils were lower than the environmental quality standard for soils (GB15618-1995). However, the mean concentrations of Cr, Hg, and Pb exceeded their corresponding background values, with the mean concentration of Hg being almost three times its background value. For different land-use types, the highest mean concentration of Cr was concentrated in grassland soils. The mean concentrations of Cd, As, Zn, and Pb in mining area soils were higher than those in the other soils. The mean concentration of Hg was the highest in the built-up area soils. Based on the potential ecological risk assessment, the forestland, garden land, grassland, and others were at low and moderate risk levels, the farmland and mining area were at low, moderate, and high risk levels, and the built-up area was at various risk levels in Xuzhou. There was a significant positive correlation between Cr, Pb, and Hg concentrations and the corresponding organic carbon contents in the farmland, built-up area, garden land, forestland, and other soils ( p < 0.01 ). A high degree of correlation was found between Cr and Hg concentrations, as well as organic carbon contents in grassland soils, with values of p < 0.05 and p < 0.01 , respectively. An obvious correlation could be seen between Hg concentrations and organic carbon contents in mining area soils ( p < 0.01 ).

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Section: Pollution Indexmentioning

confidence: 99%

Distribution Characteristics and Pollution Assessment of Soil Heavy Metals under Different Land-Use Types in Xuzhou City, China

Fang

Jiang

2019

Sustainability

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“…The heavy metals derived from socialeconomic activities can persist for centuries in soil, possibly further transferring to groundwater, animals and plants [Khalid et al 2017]. This would pose a long-term threat to human health, plant growth and the ecosystem as a whole [Sun 2017]. Up to present, the information on heavy metal pollution and risk associated with toxic elements has been limited.…”

Section: Introductionmentioning

confidence: 99%

Ecological Risk Assessment for Occurrence of Toxic Elements in Various Land Use Types in Vietnamese Mekong Delta Province

Huynh¹,

Mi²,

Giao³

2022

J. Ecol. Eng.

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A total of 316 soil samples in the An Giang province were collected from the industrial zone (48 samples), mining (40 samples), farming (112 samples), landfills (88 samples) and cemeteries (28 a samples) to analyze toxic elements, including Cu, Zn, Pb, Cd and As. The geoaccumulation index (I geo ), pollutant load index (PLI) and potential ecological risk index (RI) were used to assess pollution levels and ecological risks. The results showed that the concentrations of heavy metals were almost still within the allowable limits of national standards. Cd was not detected. Heavy metals were detected in the soil in the following order: As < Pb < Cu < Zn, mining < industrial < landfill < cultivation < cemetery areas. The heavy metals contributing to soil environmental variability were similarly identified in the cemetery with industry and landfill with farming. The value of I geo shows that As has a high potential to accumulate in soil in all land uses. The ranges of PLI values presented that the soil in industrial, farming, mining and landfills areas were classified moderate, while the cemetery areas has been rated at a high level. The RI values identified very high, high, and moderate ecological risks for cemetery, industrial and farming land and landfill, mining, respectively. The combination of PLI and RI indices showed that the cemetery areas were at the highest levels of pollution and risk. The results of this study provide scientific information on pollution level and ecological risks in various land use types supporting environmental zoning and managing strategies in the An Giang province.

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“…Studies on effective measures to ensure the sustainable development of the environment has been carried out in numerous fields. [ 1–7 ] Corrosion largely affects the growth of the national economy and the ecological environment. Various measures have been proposed to protect engineering equipment from corrosion damage.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterisation of an iron‐ion‐responsive coating with core–shell electrospun fibres containing a chelation agent

Song

Shi

Han³

et al. 2021

Materials & Corrosion

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A self‐healing coating containing an electrospun nanofibre encapsulating 3,4,5‐trihydroxy benzoic acid cyclohexyl ester (GACE) was prepared. Scanning electron microscopy and transmission electron microscopy demonstrated that the nanofibre had a core–shell structure. The shell thickness of the electrospun fibre was approximately 270 nm, while the core thickness was approximately 380 nm. The self‐healing process of the coating containing GACE nanofibres over a carbon steel surface was simulated in a 3.5 wt% NaCl solution for 30 days. Fourier‐transform infrared spectroscopy analysis revealed that the synthesised GACE reacted with iron ions and formed a stable Fe–O–C compound, which could repair the scratched coating. The self‐repair performance was evaluated through electrochemical measurements, and then a healing model was developed.

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Ecological Risk Evaluation of Heavy Metal Pollution in Soil Based on Simulation

Cited by 15 publications

References 20 publications

Distribution Characteristics and Pollution Assessment of Soil Heavy Metals under Different Land-Use Types in Xuzhou City, China

Distribution Characteristics and Pollution Assessment of Soil Heavy Metals under Different Land-Use Types in Xuzhou City, China

Ecological Risk Assessment for Occurrence of Toxic Elements in Various Land Use Types in Vietnamese Mekong Delta Province

Synthesis and characterisation of an iron‐ion‐responsive coating with core–shell electrospun fibres containing a chelation agent

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