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| Bibliometric analysis of bioaccessibility of heavy metals based on CiteSpace |
| Received:June 27, 2019 |
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| KeyWord:heavy metals;bioavailability;health risk assessment;CiteSpace;bibliometric analysis |
| Author Name | Affiliation | E-mail | | LUO Yang | College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, China | | | WU Yong-gui | College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, China
Institute of Applied Ecology, Guizhou University, Guiyang 550025, China
Karst Eco-Environmental Engineering Research Center of Guizhou Province, Guiyang 550025, China | ygwu72@126.com | | DUAN Zhi-bin | College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, China | | | XIE Rong | College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, China | |
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| Abstract: |
| In order to understand the evolution, current status, and progress of research related to the bioaccessibility of heavy metals, in addition to the development of their trends in China and abroad, this study searched relevant literatures from the database of CNKI(China National Knowledge Infrastructure) and Web of ScienceTM Core Collection Database for the period of 2006-2018. CiteSpace software was used to draw a knowledge map of the bioaccessibility of heavy metals and to make a visual analysis of relevant literatures. The results showed the following. The number of Chinese and English publications on the topic experienced a fluctuating, increasing trend between 2006-2018, with a small peak in the number of publications occurring in 2011 and 2016. International research on the bioaccessibility of heavy metals could be divided into three development stages, whereby the research hotspots of each stage were different. The keywords soil properties, atmospheric dust, food chain, and PM2.5 were the current research hotspots. Domestic research was clustered into two stages and two core evolution routes. The first stage of the main research route during the period from 2006-2014 was:heavy metals; chemical speciation/in vitro digestion; bioavailability/bioaccessibility; health risk assessment. The second stage of the main research route during the period from 2015-2018 was:farmland soil; passivation agent(e.g., hydroxyapatite, superphosphate, and potassium humate); in vitro digestion model; health risk assessment. This second stage had received extensive attention. The evaluation of health risk research had evolved from single environmental media, single risk receptor, and small-scale assessment to multiple risk sources, food chain, and large-scale comprehensive assessment. European and American countries laid the foundation for research in this field. China started late but had developed rapidly. |
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