The impact of industrialization on the distribution of heavy metals in surrounding soil: Evidence from the Chang-Zhu-Tan urban agglomeration, central China

作者：Huan-Zhan Zhou, Zhao Shi, Yuying Sun, Huimin Jiang, Zhen Song, Tao He, Ming Cheng · 发表于：Ecological Indicators · 年份：2024 · DOI：10.1016/j.ecolind.2024.112368 · 被引用次数：24 · 研究领域：Heavy metals in environment、Geochemistry and Geologic Mapping、Heavy Metal Exposure and Toxicity

• The main metal pollutants brought by regional industrialization were Cd, Hg, and Pb. • TOC was the most important factor influencing Hg and Pb content in soil, while pH value has a greater impact on Cd distribution. • The presence of other contaminants from industrialization may further increase the potential toxicity and exposure risk of HMs. • The application of organic fertilizers in agricultural processes might effectively reduce the potential for Cd migration. Rapid industrial development has resulted in serious pollutants to the urban transitional areas. But less is known on the spatial distribution and ecological risk of heavy metals (HMs) caused by regional industrialization. In present study, soils, bedrocks and plant tissues were collected in the industrial transitional areas of Chang-Zhu-Tan Urban Agglomeration (CUA) of China. Results indicated that HMs contamination in the CUA was closely connected to the distribution of regional industries, and the pollution of HMs mainly focused on the exceed of cadmium (Cd: 48.2 %), mercury (Hg: 10.8 %) and lead (Pb: 11.5 %), which presented a diffusion trend towards the surrounding environment with the industrial center as the starting point. Additionally, the structural equation model (SEM) demonstrated that the other pollutants accompanied by metals discharge might further exacerbate the ecological risk of HMs. In the detected soil properties, Soil total organic carbon (TOC) content was the key factor affecting the Hg and ...