Rare earth element contents in speleothem determined by two dissolution methods

ZHOU Hou-yun; TANG Jing; YUAN Dao-xian

doi:10.3969/j.issn.1001-4810.2011.03.017

Volume 30 Issue 3

Sep. 2011

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ZHOU Hou-yun, TANG Jing, YUAN Dao-xian. Rare earth element contents in speleothem determined by two dissolution methods[J]. CARSOLOGICA SINICA, 2011, 30(3): 341-347. doi: 10.3969/j.issn.1001-4810.2011.03.017

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ZHOU Hou-yun, TANG Jing, YUAN Dao-xian. Rare earth element contents in speleothem determined by two dissolution methods[J]. CARSOLOGICA SINICA, 2011, 30(3): 341-347. doi: 10.3969/j.issn.1001-4810.2011.03.017

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Rare earth element contents in speleothem determined by two dissolution methods

doi: 10.3969/j.issn.1001-4810.2011.03.017

1.
School of Geographical Science, Southwest University；School of Geography, South China Normal University
2.
School of Geography, South China Normal University
3.
School of Geographical Science, Southwest University

Received Date: 2011-05-03
Publish Date: 2011-09-25

Abstract

Abstract

Rare earth elements (REE) in stalagmite SJ3 collected from NE Sichuan in central China were determined by two dissolving methods, one by 2% HNO3 and the other by a mixture of HF and HNO3. The results indicate that although detrital materials are common in speleothems, a complete dissolution of the calcite powder from SJ3 by HF + HNO3 does not significantly enhance the REE concentrations obtained. This suggests that REEs in SJ3 are not contained in resistant silicate minerals which may not be derived from the overlying soil layer directly. The REEs in SJ3 may be released from the soil under chemical weathering, adsorbed on the surfaces of colloidal and particle materials in karst groundwater and incorporated into SJ3. The results indicated that REE in SJ3 can be released with diluted acids.
- karst cave,
- speleothems,
- REE,
- detrital materials,
- Northeast Sichuan

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References

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Rare earth element contents in speleothem determined by two dissolution methods

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Rare earth element contents in speleothem determined by two dissolution methods

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