Abstract:
In order to comprehensively understand the research status, research progress and frontier trends of soil heavy metal pollution remediation research at home and abroad, CiteSpace software was used to visualize and analyze the literature in the field of site soil heavy metal pollution remediation in this article. The results showed that the number of literature published in Chinese and foreign languages in this research field has shown a fluctuating growth trend in the past 12 years. China, the United States, India, Italy, Poland, etc. were countries with a large number of foreign language literature. The main publishing institutions in this field included the Chinese Academy of Sciences, the University of the Chinese Academy of Sciences, Zhejiang University, the University of Belgrade, the Polish Academy of Sciences, etc. Among them, the Chinese Academy of Sciences occupied an important position, indicating that China has a strong academic influence and significant contributions in this research field. From the perspective of cooperative relations, authors at home and abroad in this field cooperate closely within their own scientific research teams, but lack communication and cooperation between teams. From the analysis of keywords and cluster maps, it can be seen that the research progress in this field is divided into three stages. The first phase focused on the changes of a single heavy metal element in the soil of the site, and the second phase focused on qualitative and quantitative analysis and risk assessment of pollutants. The third phase focused on the research and development of new repair materials and risk assessment through the construction of models. According to the time zone map, emergent map and research path, the path of "source analysis - spatial distribution of heavy metals - joint repair technology, new repair materials - health risk assessment" can be used as the research hotspot and frontier in this field.