光谱学与光谱分析 |
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Preparation of Sub-Standard Samples and XRF Analytical Method of Powder Non-Metallic Minerals |
KONG Qin1, CHEN Lei1, WANG Ling1, 2* |
1. College of Materials and Chemical﹠ Chemistry Engineering, Chengdu University of Technology, Chengdu 610059, China 2. Key Laboratory of Diamond Film, Chengdu University of Technology, Chengdu 610059, China |
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Abstract In order to solve the problem that standard samples of non-metallic minerals are not satisfactory in practical work by X-ray fluorescence spectrometer (XRF) analysis with pressed powder pellet, a method was studied how to make sub-standard samples according to standard samples of non-metallic minerals and to determine how they can adapt to analysis of mineral powder samples, taking the K-feldspar ore in Ebian-Wudu, Sichuan as an example. Based on the characteristic analysis of K-feldspar ore and the standard samples by X-ray diffraction (XRD) and chemical methods, combined with the principle of the same or similar between the sub-standard samples and unknown samples, the experiment developed the method of preparation of sub-standard samples: both of the two samples above mentioned should have the same kind of minerals and the similar chemical components, adapt mineral processing, and benefit making working curve. Under the optimum experimental conditions, a method for determination of SiO2, Al2O3, Fe2O3, TiO2, CaO, MgO, K2O and Na2O of K-feldspar ore by XRF was established. The determination results are in good agreement with classical chemical methods, which indicates that this method was accurate.
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Received: 2011-10-13
Accepted: 2012-01-20
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Corresponding Authors:
WANG Ling
E-mail: wangling@cdut.edu.cn
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