Determination of 15 Rare Earth Elements in Uranium Ore by Open Acid Dissolution-Inductively Coupled Plasma-Mass Spectrometry
BACKGROUND Studying the characteristics of rare earth elements in uranium ore can determine the source of the ore-forming fluids, the mineralization environment, and the physical and chemical conditions. It is particularly important to accurately determine the content of rare earth elements in urani...
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| Format: | Article |
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Science Press, PR China
2022-09-01
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| Series: | Yankuang ceshi |
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| Online Access: | http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.202112070197 |
| _version_ | 1797954164595097600 |
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| author | ZENG Jiangping WANG Jiasong ZHU Yue ZHANG Nan WANG Na WU Liangying WEI Shuang |
| author_facet | ZENG Jiangping WANG Jiasong ZHU Yue ZHANG Nan WANG Na WU Liangying WEI Shuang |
| author_sort | ZENG Jiangping |
| collection | DOAJ |
| description | BACKGROUND Studying the characteristics of rare earth elements in uranium ore can determine the source of the ore-forming fluids, the mineralization environment, and the physical and chemical conditions. It is particularly important to accurately determine the content of rare earth elements in uranium ore. At present, rare earth elements are mainly determined by inductively coupled plasma-mass spectrometry (ICP-MS). High-pressure closed acid-dissolution is commonly used. The open acid dissolution method is rarely used because perchloric acid is routinely used to dissolve samples, and the temperature is relatively low, which may cause incomplete decomposition of some samples. OBJECTIVES In order to solve the problem that the rare earth elements have contents lower than real values in open acid dissolution. METHODS The tetracid system of nitric acid-hydrofluoric acid-perchloric acid-sulfuric acid was used in the open acid dissolution method. ICP-MS with Rh as internal standard was used to determine 15 rare earth elements in uranium ore. RESULTS The relative standard deviation (RSD) of the 15 rare earth elements was between 0.54% and 5.98%, and the recovery was between 96.0% and 106.0%. Applying to national rock standard materials (GBW07103, GBW07104, GBW07122), the measured values were consistent with the standard values, and the relative error (RE) was between -8.33% and 7.24%, indicating that this method was effective for the determination of rare earth elements. CONCLUSIONS The method has simple operation, accurate and reliable results, and is suitable for the determination of rare earth elements in large quantities of uranium ore. |
| first_indexed | 2024-04-10T23:14:21Z |
| format | Article |
| id | doaj.art-5beed632e0654133b9e2bf84edf9aa40 |
| institution | Directory Open Access Journal |
| issn | 0254-5357 |
| language | English |
| last_indexed | 2024-04-10T23:14:21Z |
| publishDate | 2022-09-01 |
| publisher | Science Press, PR China |
| record_format | Article |
| series | Yankuang ceshi |
| spelling | doaj.art-5beed632e0654133b9e2bf84edf9aa402023-01-13T03:03:33ZengScience Press, PR ChinaYankuang ceshi0254-53572022-09-0141578979710.15898/j.cnki.11-2131/td.202112070197yk202112070197Determination of 15 Rare Earth Elements in Uranium Ore by Open Acid Dissolution-Inductively Coupled Plasma-Mass SpectrometryZENG Jiangping0WANG Jiasong1ZHU Yue2ZHANG Nan3WANG Na4WU Liangying5WEI Shuang6Tianjin Center, China Geological Survey, Tianjin 300170, ChinaTianjin Center, China Geological Survey, Tianjin 300170, ChinaTianjin Geological and Mineral Testing Center, Tianjin 300191, ChinaTianjin Center, China Geological Survey, Tianjin 300170, ChinaTianjin Center, China Geological Survey, Tianjin 300170, ChinaTianjin Center, China Geological Survey, Tianjin 300170, ChinaTianjin Center, China Geological Survey, Tianjin 300170, ChinaBACKGROUND Studying the characteristics of rare earth elements in uranium ore can determine the source of the ore-forming fluids, the mineralization environment, and the physical and chemical conditions. It is particularly important to accurately determine the content of rare earth elements in uranium ore. At present, rare earth elements are mainly determined by inductively coupled plasma-mass spectrometry (ICP-MS). High-pressure closed acid-dissolution is commonly used. The open acid dissolution method is rarely used because perchloric acid is routinely used to dissolve samples, and the temperature is relatively low, which may cause incomplete decomposition of some samples. OBJECTIVES In order to solve the problem that the rare earth elements have contents lower than real values in open acid dissolution. METHODS The tetracid system of nitric acid-hydrofluoric acid-perchloric acid-sulfuric acid was used in the open acid dissolution method. ICP-MS with Rh as internal standard was used to determine 15 rare earth elements in uranium ore. RESULTS The relative standard deviation (RSD) of the 15 rare earth elements was between 0.54% and 5.98%, and the recovery was between 96.0% and 106.0%. Applying to national rock standard materials (GBW07103, GBW07104, GBW07122), the measured values were consistent with the standard values, and the relative error (RE) was between -8.33% and 7.24%, indicating that this method was effective for the determination of rare earth elements. CONCLUSIONS The method has simple operation, accurate and reliable results, and is suitable for the determination of rare earth elements in large quantities of uranium ore.http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.202112070197uranium orerare earth elementsnitric acid-hydrofluoric acid-perchloric acid-sulfuric acid open acid dissolutioninductively coupled plasma-mass spectrometry |
| spellingShingle | ZENG Jiangping WANG Jiasong ZHU Yue ZHANG Nan WANG Na WU Liangying WEI Shuang Determination of 15 Rare Earth Elements in Uranium Ore by Open Acid Dissolution-Inductively Coupled Plasma-Mass Spectrometry Yankuang ceshi uranium ore rare earth elements nitric acid-hydrofluoric acid-perchloric acid-sulfuric acid open acid dissolution inductively coupled plasma-mass spectrometry |
| title | Determination of 15 Rare Earth Elements in Uranium Ore by Open Acid Dissolution-Inductively Coupled Plasma-Mass Spectrometry |
| title_full | Determination of 15 Rare Earth Elements in Uranium Ore by Open Acid Dissolution-Inductively Coupled Plasma-Mass Spectrometry |
| title_fullStr | Determination of 15 Rare Earth Elements in Uranium Ore by Open Acid Dissolution-Inductively Coupled Plasma-Mass Spectrometry |
| title_full_unstemmed | Determination of 15 Rare Earth Elements in Uranium Ore by Open Acid Dissolution-Inductively Coupled Plasma-Mass Spectrometry |
| title_short | Determination of 15 Rare Earth Elements in Uranium Ore by Open Acid Dissolution-Inductively Coupled Plasma-Mass Spectrometry |
| title_sort | determination of 15 rare earth elements in uranium ore by open acid dissolution inductively coupled plasma mass spectrometry |
| topic | uranium ore rare earth elements nitric acid-hydrofluoric acid-perchloric acid-sulfuric acid open acid dissolution inductively coupled plasma-mass spectrometry |
| url | http://www.ykcs.ac.cn/en/article/doi/10.15898/j.cnki.11-2131/td.202112070197 |
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