Author:
Han Chengyu,Li Juan,Shen Jianglong
Abstract
AbstractWith the rapid development of industry, heavy metal pollution has seriously damaged the health of soil, and heavy metals spread through the food chain, posing a threat to human health. The firm existence of heavy metals in soil under earthy conditions is a center trouble faced by soil dense metal pollution solidification and correction technology. However, the existing investigation results are mostly controlled to soil passivation experiments using various materials. Macroscopically, heavy metal passivation materials have been selected, but the intrinsic mechanisms of different compound functional groups in soil passivation have been ignored. With the common heavy metal ion Pb2+ as an example, the stability of the combination of heavy metal ions and common ion groups in soil was analyzed in this study by using quantum chemical calculation as the theoretical guidance. The results show that SO42− and PO43−, as functional groups of passivating agents, are used to control lead pollution and have been verified to have good effects. When the pollution is particularly serious and not easy to passivation and precipitation, Fe3+ can be considered to enhance the passivation effect.
Funder
Technology innovation Center for Land Engineering and Human Settlements, Shaanxi Land Engineering Construction Group Co., Ltd. and Xi'an Jiaotong University
Shaanxi Province Innovative Talents Program-Youth Science and Technology Rising Star Project
Shaanxi Province key research and development plan key industrial chain project
Publisher
Springer Science and Business Media LLC
Reference41 articles.
1. Brookes, P. C. The use of microbial parameters in monitoring soil pollution by heavy metals. Biol. Fertil. Soils 19, 269–279 (1995).
2. Huang, Y. et al. Current status of agricultural soil pollution by heavy metals in China: A meta-analysis. Sci. Total Environ. 651(Pt2), 3034–3042 (2019).
3. Khan, S., Naushad, M. & Lima, E. C. Global soil pollution by toxic elements: Current status and future perspectives on the risk assessment and remediation strategies—A review. J. Hazard. Mater. 417, 126039 (2021).
4. Zeng, S., Ma, J., Yang, Y., Zhang, S. & Liu, J. G. Spatial assessment of farmland soil pollution and its potential human health risks in China. Sci. Total Environ. 687, 642–653 (2019).
5. Yan, Y. Z. et al. Estimating the national burden of mild intellectual disability in children exposed to dietary lead in China. Environ. Int. 137, 105553 (2020).