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| Determination of Various Elements in Ceramic Materials by Wavelength Dispersive X-Ray Fluorescence Spectrometry With Fusion Sample
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| NI Zi-yue, LIU Ming-bo*, ZHENG Qi, HU Xue-qiang, YUE Yuan-bo, YANG Bo-zan, FAN Zhen, LI Cheng |
NCS Testing Technology Co., Ltd., Beijing 100094, China
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Abstract The chemical composition of ceramic materials directly affects their properties, and due to their diverse composition, when measured by X-ray fluorescence spectroscopy after being pressed directly, the matrix greatly influences the determination of samples.In this paper, the fused pelletswerepreparedfor various types of ceramic materials, the accurate correction of the concentration was discussed by the application of loss on ignition(LOI)for the elements to be measured in the sample, the relative error of concentration was analyzed for different dilution ratios and different sampling approaches, and the test of multiple components was studied in various types of matrices by wavelength dispersive X-ray fluorescence spectrometry. Then, the calibration curve is verified by the validation group. When the actual samplesareprepared, the accurate value of the ignition loss can be used to correct the concentration of the element to be measured in the sample. Different correction formulas are required to correct the content when the sample is weighed before or after the ignition. When the loss of ignition is not corrected, the concentration error is significantly lower when weighted before ignition than when weighted after ignition. When the sample dilution ratio is 1∶10 and 1∶20, the relative error caused by 50% burning loss is only 0.43% and 0.12% after using a dilution ratio 1∶20 for sample preparation and applying the estimated standard error to evaluate the improvement of the working curve. After correction, the linear determination coefficient of each component reached more than 0.99. At the same time, the verification group was used to test the correctness of the method.
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Received: 2024-02-29
Accepted: 2024-08-21
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Corresponding Authors:
LIU Ming-bo
E-mail: Liumingbo@ncschina.com
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