Improved sequential extraction method for determination of alkali and alkaline earth metals in Zhundong coals
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- 作者：Yanmei Yang ; Yuxin Wu ; Hai Zhang ; haizhang@tsinghua.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Man Zhang ; Qing Liu ; Hairui Yang ; Junfu Lu
- 关键词：Zhundong coal ; Alkali and alkaline earth metal species (AAEMs) ; Sequential extraction method ; Occurrence modes
- 刊名：Fuel
- 出版年：2016
- 出版时间：1 October 2016
- 年：2016
- 卷：181
- 期：Complete
- 页码：951-957
- 全文大小：1621 K
文摘
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Effects of extraction condition on AAEM determination in were experimentally studied.
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An improved sequential extraction method was proposed with clearly defined conditions.
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The new method has higher accuracy and is less time consuming.
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AAEM occurrence modes and contents in three Zhundong coals were determined by the new method.
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Mineral patterns in raw coal and extraction residues were analyzed by XRD.