Characteristics and Source Analysis of Soil Heavy Metal Pollution in a Mining Area

Yang, Haichan; Dong, Chaofang; Zhang, Hao; Luo, Haiwei; Li, Jiaqi; Yin, Jing; Dong, Xinxing; Wei, Ziran; Zhang, Naiming; Li, Bao

doi:10.4236/gep.2022.103012

Cited by 4 publications

(2 citation statements)

References 5 publications

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“…Amidst the rapid progress of urbanization and industrialization, the issue of soil heavy metal pollution has become impossible to overlook, garnering increasing attention from researchers and the general public [1][2][3][4]. Being among the most prevalent environmental pollutants in soil, heavy metals tend to accumulate on the soil surface and exhibit limited mobility once they have entered the soil [5][6].…”

Section: Introductionmentioning

confidence: 99%

Characteristics and Risk Assessment of Soil Available Heavy Metal Pollution in Guangzhou Based on Multi Method Fusion

Zou,

Chen,

Zhang

et al. 2024

Preprint

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Assessment of the effective state concentrations of Zn, Pb, Cu, Ni, Cr, Cd, and As in 210 soil samples across the Guangzhou region in South China. The study also explores the pollution status, potential risks, and identifies the main hazard factors associated with these elements. The analysis of effective concentrations indicates average values of 13.66 mg/kg for Pb, 3.64 mg/kg for Ni, 17.92 mg/kg for Cu, 1.74 mg/kg for Cr, 51.77 mg/kg for Zn, 0.22 mg/kg for Cd, and 0.38 mg/kg for As. Notably, all heavy metals exhibited considerable variability. The single pollution index method and Nemerow index method both suggest that, with the exception of Cd, all heavy metals exhibit relatively low levels of contamination, indicating a slight overall pollution in the studied samples. The potential ecological risk index identifies Cd as the primary ecological risk factor among the available heavy metals in the soil of Guangzhou. The analysis using the potential health risk model suggests that the available forms of each heavy metal do not pose substantial health risks to both children and adults. The principal non-carcinogenic factors identified are Cu and Pb, whereas Cd and Cr emerge as the primary carcinogenic factors. The collaborative risk assessment analysis revealed that 79% of the samples in Guangzhou exhibited low potential risks, 20% showed potential risks, and only one sample indicated serious risks.

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Section: Introductionmentioning

confidence: 99%

Characteristics and Risk Assessment of Soil Available Heavy Metal Pollution in Guangzhou Based on Multi Method Fusion

Zou,

Chen,

Zhang

et al. 2024

Preprint

View full text Add to dashboard Cite

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“…The required maintenance funds exceed several trillion yuan. Coupled with the lack of soil pollution and soil remediation laws and standards, the remediation of heavy metal pollution in the country has a long way to go [3]. Human activities are the major cause of soil pollution by heavy metals, including industrial activities, agricultural activities, transport and domestic waste, and urban construction.…”

Section: Introductionmentioning

confidence: 99%

Study of the Remediation Effect and Mechanism of Biochar-Loaded nZVI on Heavy Metal Contaminated Soil

Duan,

Ren,

Tao

et al. 2023

Sustainability

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Soil heavy metal pollution has become an important environmental problem in the world. Therefore, it is particularly important to find effective remediation methods for heavy metal contaminated soil. Biochar (BC) is a kind of soil heavy metal passivator with a wide range of applications. It also has a good effect on the control of soil heavy metal pollution. However, BC does not have sufficient fixation capacity for para-anionic contaminants. Nano-zero-valent iron (nZVI) has a strong reducing ability, which can make up for this defect of BC. Therefore, to improve the passivation effect of heavy metals, nanomaterial modification is proposed to optimize biochar performance. Nanoparticles are used as carriers to impregnate biochar (BC). Biochar-supported nano-ferric zero-valent materials are prepared to repair soil contaminated by heavy metals. Results show that the physicochemical properties of modified biochar are significantly optimized. At 5%, the modified biochar (1:3) treatment group had the best remediation effect on Cd-contaminated soil, which significantly promoted soil catalase activity. The modified biochar (3:1) treatment group had the best remediation effect on As-contaminated soil, and significantly increased soil pH, Cation Exchange Capacity (CEC), and available Fe content. Modified biochar (1:3) with 3% added content was used to repair actual composite heavy metal contaminated soil, and the relative percentage content of Cu, Zn, As, Cd, and Pb residue state increased by 10.28%, 7.81%, 7.44%, 9.26%, and 12.75%, respectively. The effects of nZVI@BC on the remediation effect and soil enzymes of Cd- and As-contaminated soil under different factors such as mass ratio of carbon and iron and dosage were studied. The remediation mechanism of Cd- and As-contaminated soil was clarified, and a good solidification and stabilization effect was obtained. This provides a theoretical basis for nZVI@BC remediation of soil contaminated by Cd and As. It has good application value in the treatment and remediation of complex heavy metal contaminated soil.

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Characterization of soil trace metal pollution, source identification, and health risk assessment in the middle reaches of the Guihe River Basin

Gao,

Tan,

Liu

et al. 2024

Environ Monit Assess

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Characteristics and Source Analysis of Soil Heavy Metal Pollution in a Mining Area

Cited by 4 publications

References 5 publications

Characteristics and Risk Assessment of Soil Available Heavy Metal Pollution in Guangzhou Based on Multi Method Fusion

Characteristics and Risk Assessment of Soil Available Heavy Metal Pollution in Guangzhou Based on Multi Method Fusion

Study of the Remediation Effect and Mechanism of Biochar-Loaded nZVI on Heavy Metal Contaminated Soil

Characterization of soil trace metal pollution, source identification, and health risk assessment in the middle reaches of the Guihe River Basin

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