| 光谱学与光谱分析 |
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| Research on the Content Prediction Model for the Determination of Nickel in Soil by Portable Energy Dispersive X-Ray Fluorescence Analyzer |
| WANG Guang-xi, LI Dan*, LAI Wan-chang, ZHAI Juan, YANG Zhong-jian, HOU Xin, CAO Fa-ming |
| College of Nuclear Technology and Automation Engineering, Chengdu University of Technology, Chengdu 610059, China |
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Abstract The present paper discusses the influence of matrix effect on measurement results when portable energy dispersive X-ray fluorescence analyzer is used for the determination of Ni in soil. Based on the scattered X-ray intensity of WLα emitted from the X-ray tube on the sample, a correction method was proposed, and it combines with the correction of absorption element, which can effectively overcome the matrix effect. The correlation coefficient of the content prediction model based on this method is 0.999 and the residual standard deviation is 2.541. The average relative error is 3.90% when the content prediction model is used to measure the content of Ni in the national standard soil samples, so the results coincide well with standard values, and the precision is high.
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Received: 2013-05-02
Accepted: 2013-06-24
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Corresponding Authors:
LI Dan
E-mail: lidan08@cdut.cn
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