Research on heavy metal pollution remediation technology in farmland soil

Shi, Binli; Zhang, Xiaohui; Gou, Aiping

doi:10.1051/e3sconf/202020602011

Cited by 7 publications

(2 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The accumulative processing of heavy metals in soil is slow, persistent, and irreversible, leading to environmental hazards in the surrounding areas along with soil pollution (Guo et al, 2024). Heavy metals are introduced into the body through the food chain and also penetrate the body through the skin, thereby triggering cancers or other diseases and disrupting bodily systems (Shi et al, 2020). Therefore, heavy metal contamination of soil requires attention (Nenad et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Current Status and Evolutionary Patterns of Heavy Metal Environmental Capacity in the Baerdawu Region of the Tibetan Plateau: Based on High-Density Data

Chen,

Yang,

Liu

et al. 2024

Preprint

View full text Add to dashboard Cite

The Tibetan Plateau, which is called the “Third Pole” and the “Roof of the World,” exhibits a simplistic and clear human footprint due to its unique environmental conditions, primarily influenced by a singular human activity, grazing. Consequently, conducting environmental carrying capacity assessments in this area yield more accurate results. This study focused on the Baerdawu region of the Tibetan Plateau, where the background values of regional soil were calculated based on 7373 surface soil samples. Utilizing material balance linear modeling and the environmental comprehensive index method,a comprehensive soil environmental capacity (SEC) for heavy metals and health risks in the soil was determined. The SEC of the static ranking within the study area was as follows: Zn, Pb, As, U, Hg, La, and Zr. The high-value zones of these elements largely range from the northwest and northeast of the analyzed area, whereas the low-value zones are primarily located in the central and southwest areas. Significance analysis of different geological settings, land-use types, and soil types revealed that the geological background had the greatest influence on SEC, indicating that most elements are controlled by geological sources. Additionally, the residual capacity of most elements was significantly affected by soil type, with the impact being most pronounced in alpine desertified grassland soils, indicating severe disturbances from grazing in the research area. The Baerdawu region’s composite SEC index was 1.17, indicating a high environmental capacity and no health risks. By exploring the characteristics of SEC in the Baerdawu area, this study offers a scientific foundation for formulating policies for soil management. The results of this study can be applied to soil environmental protection in the Qinghai-Tibet Plateau and similar regions.

show abstract

Section: Introductionmentioning

confidence: 99%

Current Status and Evolutionary Patterns of Heavy Metal Environmental Capacity in the Baerdawu Region of the Tibetan Plateau: Based on High-Density Data

Chen,

Yang,

Liu

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…The species susceptibility distribution (SSD) constructs dose-effect relationships between contaminants and species from a toxicological perspective and is an effective method for quantitative ecological risk assessment toward toxic receptors [ 14 ]. SSD method is the most recognized method for taking full account of biodiversity and ecosystem integrity, carrying out qualitative and quantitative analysis of risk, and having accurate evaluation results [ 15 , 16 ]. On the one hand, it was widely used to quantitatively assess the risk probability of heavy metals’ toxic effects on organisms.…”

Section: Introductionmentioning

confidence: 99%

Ecological risk evaluation and sensitivity analysis of heavy metals on soil organisms under human activities in the Tibet Plateau, China

Zeng

Liang

et al. 2023

PLoS ONE

View full text Add to dashboard Cite

The Tibetan Plateau (TP), once considered a pristine environment, is now facing increased heavy metal pollution due to human activities, causing unprecedented ecological risks to soil organisms. However, little is known about the sensitivity and tolerance of different soil organisms to heavy metal toxicity in the high-altitude areas of the TP under the background of human activity intensity and future risk control priorities. In this study, we conducted an ecological risk assessment and threshold calculation for 10 heavy metals in soil for typical soil organisms, including Cd, Co, Cr, Cu, Ni, Pb, Zn, Mn, Sb, and Sn, using the species sensitivity distribution (SSD) method in the zone between Ranwu town and Renlongba glacier on the TP. The results revealed that most sampling sites had average levels of Cd, Sb and Ni exceeding their regional soil environmental background values and were the major contaminants. Impressively, the hitherto undeveloped Renlungba Glacier showed relatively high contamination levels of Sb and Ni. From the view of sensitivity differences, the toxicity risks of Cd, Cr, Cu, Ni and Pb were higher for terrestrial plants than for soil invertebrates based on the fitted heavy metal SSD curve trends. In terms of the ecological risk level, the average potentially affected fraction values of Zn and Ni reached 18.5% and 17.0%, respectively, with significant ecological risk at a few sampling sites. In terms of ecological risk thresholds, the Cd concentration at the 5% hazard concentration (HC5) control level was 0.05 mg/kg, which was the heavy metal with the highest risk in this study. Comparing the HC5 values of each heavy metal with the limit values in the current Chinese soil environmental quality standards, the existing administrative policies as a whole lack a powerful prevention of the potential ecological risk posed by heavy metals to soil organisms.

show abstract

Responses of Rice and Related Cadmium Transporter Genes to the Passivating Microbial Agent MBLHAP

et al. 2023

View full text Add to dashboard Cite

Research on heavy metal pollution remediation technology in farmland soil

Cited by 7 publications

References 11 publications

Current Status and Evolutionary Patterns of Heavy Metal Environmental Capacity in the Baerdawu Region of the Tibetan Plateau: Based on High-Density Data

Current Status and Evolutionary Patterns of Heavy Metal Environmental Capacity in the Baerdawu Region of the Tibetan Plateau: Based on High-Density Data

Ecological risk evaluation and sensitivity analysis of heavy metals on soil organisms under human activities in the Tibet Plateau, China

Responses of Rice and Related Cadmium Transporter Genes to the Passivating Microbial Agent MBLHAP

Contact Info

Product

Resources

About