Study on the determination of rare earth elements in coal ash by ICP-MS |
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| Authors: | Shu Wu Bo Zhang Chunru Yang Jinming Wang Jianwen Gao |
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| Affiliation: | 1. State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, Hebei, China;2. Sino - Arab Chemical Fertilizer Co., Ltd., Qinhuangdao, Hebei, China;3. Coal Inspection Technique Center of Qinhuangdao Customs, Qinhuangdao, Hebei, China;4. Sino - Arab Chemical Fertilizer Co., Ltd., Qinhuangdao, Hebei, China |
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| Abstract: | AbstractIn this paper, an analytical method for the determination of rare earth elements in coal ash by mixed acid decomposition-inductively coupled plasma mass spectrometry was established. Using this method, the content of 15 rare earth elements in coal ash can be detected accurately, with the detection limit being 0.007–0.033?μg·g?1, and the precision (RSD, n?=?6) less than 5.0%. This method was used to test the coal ash of different commercial coals. The results show that the light rare earth elements in coal ash account for 75.66%–82.61% of the total rare earth elements, among which, the total amount of rare earth elements in Yitai coal after being ashed is significantly lower than that of other coals. |
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| Keywords: | rare earth elements mixed acid ICP-MS coal ash |
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