Concentration and Fractionation of Rare Earth Elements in Soils Surrounding Rare Earth Ore Area
BACKGROUND The study on content and fractionation characteristics of rare earth elements (REE) in soils around different types of rare earth mining areas can provide theoretical support and scientific advice for the control of the polluted environment around the rare earth mining areas. OBJECTIVES T...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Science Press, PR China
2019-03-01
|
| Series: | Yankuang ceshi |
| Subjects: | |
| Online Access: | http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.201807180085 |
| _version_ | 1797953788898705408 |
|---|---|
| author | WANG Xue-feng XU Chun-xue GU Xue WANG Ya-ping LI Kai BAO Zheng-yu |
| author_facet | WANG Xue-feng XU Chun-xue GU Xue WANG Ya-ping LI Kai BAO Zheng-yu |
| author_sort | WANG Xue-feng |
| collection | DOAJ |
| description | BACKGROUND The study on content and fractionation characteristics of rare earth elements (REE) in soils around different types of rare earth mining areas can provide theoretical support and scientific advice for the control of the polluted environment around the rare earth mining areas. OBJECTIVES To reveal the concentration and fractionation characteristics of REE in the soils around different types of rare earth mining areas. METHODS The content and fractionation of 15 rare earth elements in 6 soil samples from the Bayan Obo rare earth tailings area in Inner Mongolia and the Gannan rare earth mining area in Jiangxi Province were determined by the method of Community Bureau of Reference (BCR) sequential extraction and Inductively Coupled Plasma-Mass Spectrometry. RESULTS ∑REE in the soil around the mining area were 264-15955μg/g, significantly higher than the background value (186μg/g) of soils in China. LREE were enriched in the surrounding soils of the Bayan Obo mining area, and REE mainly existed in residual fraction, accounting for 64.0%-89.4% of the total content. HREE were enriched in the soils of the Gannan mining area, the main forms of REE in this area are acid-soluble fraction and reducible fraction, accounting for more than 70% of the total content. REE in the Gannan area were readily transferable and polluted the surrounding environment. CONCLUSIONS The fractionation characteristics of rare earth elements in soils are strongly correlated with pH value. With the decrease of soil pH value, the content of acid extraction fraction of rare earth elements is increasing and the content of residual fraction is decreasing. |
| first_indexed | 2024-04-10T23:07:37Z |
| format | Article |
| id | doaj.art-2ed32301d69c40c19d4739ad8768a38f |
| institution | Directory Open Access Journal |
| issn | 0254-5357 |
| language | English |
| last_indexed | 2024-04-10T23:07:37Z |
| publishDate | 2019-03-01 |
| publisher | Science Press, PR China |
| record_format | Article |
| series | Yankuang ceshi |
| spelling | doaj.art-2ed32301d69c40c19d4739ad8768a38f2023-01-13T10:08:00ZengScience Press, PR ChinaYankuang ceshi0254-53572019-03-0138213714610.15898/j.cnki.11-2131/td.201807180085ykcs-38-2-137Concentration and Fractionation of Rare Earth Elements in Soils Surrounding Rare Earth Ore AreaWANG Xue-feng0XU Chun-xue1GU Xue2WANG Ya-ping3LI Kai4BAO Zheng-yu5National Research Center for Geoanalysis, Beijing 100037, ChinaNational Research Center for Geoanalysis, Beijing 100037, ChinaInstitute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, ChinaNational Research Center for Geoanalysis, Beijing 100037, ChinaGuang Dong Nuclear Power Institute of Engineering Exploration, Guangzhou 510800, ChinaFaculty of Earth Sciences, China University of Geoscience(Wuhan), Wuhan 430074, ChinaBACKGROUND The study on content and fractionation characteristics of rare earth elements (REE) in soils around different types of rare earth mining areas can provide theoretical support and scientific advice for the control of the polluted environment around the rare earth mining areas. OBJECTIVES To reveal the concentration and fractionation characteristics of REE in the soils around different types of rare earth mining areas. METHODS The content and fractionation of 15 rare earth elements in 6 soil samples from the Bayan Obo rare earth tailings area in Inner Mongolia and the Gannan rare earth mining area in Jiangxi Province were determined by the method of Community Bureau of Reference (BCR) sequential extraction and Inductively Coupled Plasma-Mass Spectrometry. RESULTS ∑REE in the soil around the mining area were 264-15955μg/g, significantly higher than the background value (186μg/g) of soils in China. LREE were enriched in the surrounding soils of the Bayan Obo mining area, and REE mainly existed in residual fraction, accounting for 64.0%-89.4% of the total content. HREE were enriched in the soils of the Gannan mining area, the main forms of REE in this area are acid-soluble fraction and reducible fraction, accounting for more than 70% of the total content. REE in the Gannan area were readily transferable and polluted the surrounding environment. CONCLUSIONS The fractionation characteristics of rare earth elements in soils are strongly correlated with pH value. With the decrease of soil pH value, the content of acid extraction fraction of rare earth elements is increasing and the content of residual fraction is decreasing.http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.201807180085soilreefractionation analysissequential extraction procedure |
| spellingShingle | WANG Xue-feng XU Chun-xue GU Xue WANG Ya-ping LI Kai BAO Zheng-yu Concentration and Fractionation of Rare Earth Elements in Soils Surrounding Rare Earth Ore Area Yankuang ceshi soil ree fractionation analysis sequential extraction procedure |
| title | Concentration and Fractionation of Rare Earth Elements in Soils Surrounding Rare Earth Ore Area |
| title_full | Concentration and Fractionation of Rare Earth Elements in Soils Surrounding Rare Earth Ore Area |
| title_fullStr | Concentration and Fractionation of Rare Earth Elements in Soils Surrounding Rare Earth Ore Area |
| title_full_unstemmed | Concentration and Fractionation of Rare Earth Elements in Soils Surrounding Rare Earth Ore Area |
| title_short | Concentration and Fractionation of Rare Earth Elements in Soils Surrounding Rare Earth Ore Area |
| title_sort | concentration and fractionation of rare earth elements in soils surrounding rare earth ore area |
| topic | soil ree fractionation analysis sequential extraction procedure |
| url | http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.201807180085 |
| work_keys_str_mv | AT wangxuefeng concentrationandfractionationofrareearthelementsinsoilssurroundingrareearthorearea AT xuchunxue concentrationandfractionationofrareearthelementsinsoilssurroundingrareearthorearea AT guxue concentrationandfractionationofrareearthelementsinsoilssurroundingrareearthorearea AT wangyaping concentrationandfractionationofrareearthelementsinsoilssurroundingrareearthorearea AT likai concentrationandfractionationofrareearthelementsinsoilssurroundingrareearthorearea AT baozhengyu concentrationandfractionationofrareearthelementsinsoilssurroundingrareearthorearea |