Determination of Elemental Content in Geological Samples by One-Time Acid Dissolution and Inductively Coupled Plasma-Mass Spectrometry

WANG Jun-yu; WU Bao-cun; LI Zhi-wei; HAN Min; ZHONG Li-xiang

2011 Vol. 30, No. 4

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Article navigation > Rock and Mineral Analysis > 2011 > 30(4): 440-445

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WANG Jun-yu, WU Bao-cun, LI Zhi-wei, HAN Min, ZHONG Li-xiang. Determination of Elemental Content in Geological Samples by One-Time Acid Dissolution and Inductively Coupled Plasma-Mass Spectrometry[J]. Rock and Mineral Analysis, 2011, 30(4): 440-445.

Citation:

Determination of Elemental Content in Geological Samples by One-Time Acid Dissolution and Inductively Coupled Plasma-Mass Spectrometry

1.
Henan Rock and Mineral Testing Center, Zhengzhou 450012, China
2.
Henan Key Laboratory of Geological Processes of Metal Mineral Resources and Utilization, Zhengzhou 450012, China
3.
Henan Rock and Mineral Testing Center, Zhengzhou 450012, China
4.
Henan Key Laboratory of Geological Processes of Metal Mineral Resources and Utilization, Zhengzhou 450012, China
5.
Henan Rock and Mineral Testing Center, Zhengzhou 450012, China
6.
Henan Key Laboratory of Geological Processes of Metal Mineral Resources and Utilization, Zhengzhou 450012, China
7.
Henan Rock and Mineral Testing Center, Zhengzhou 450012, China
8.
Henan Key Laboratory of Geological Processes of Metal Mineral Resources and Utilization, Zhengzhou 450012, China
9.
Henan Rock and Mineral Testing Center, Zhengzhou 450012, China
10.
Henan Key Laboratory of Geological Processes of Metal Mineral Resources and Utilization, Zhengzhou 450012, China

Received Date: 25 December 2010

Revised Date: 06 April 2011

Publish Date: 28 August 2011

Abstract

Abstract

The methods of HCl-HNO3-HF and HCl-HNO3-HF-HClO4 were improved to overcome the incomplete decomposition of refractory elements and bad replication results of volatile elements. A new analysis method has been developed for 15 rare earth elements and common trace elements by ore dissolution and determination. Analytical quality and efficiency have been greatly improved. Geological samples were dissolved with mixed acids of HCl-HNO3-HF-HClO4-H2SO4 in 30 mL teflon crucible on a hot plate. The salts were dissolved and extracted by 50% reverse aqua regia and diluted to constant volume. 45 elements in the samples were determined simultaneously by ICP-MS with 10 ng/mL Rh as the internal standard and three on-line injections. The effect of volatile elements are discussed in detail for the decomposition method. The certified reference material of rock (GBW07106), stream sediment (GBW07303) and soil (GBW07429) were analyzed to test the method. Results are in good agreement with certified values. Standard deviations of the method are 0.03%-4.97%. This method is rapid, simple and practical with high precision.
- opening /
- acid /
- dissolution /
- inductively