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《化学分析计量》 2020年第03期
DOI:10.3969/j.issn.1008-6145.2020.03.004
电感耦合等离子体质谱法测定三水铝土矿中的15种有效稀土元素
程相恩123,杨惠玲3,班俊生3,姚永生3,王风23
1.河南省有色金属矿产探测工程技术研究中心,郑州 450016; 2.河南省有色金属地质矿产局第六地质大队,郑州 450016; 3.河南省有色金属地质矿产局联合实验室,郑州 451464 
Determination of 15 effective rare earth elements in bauxite by inductively coupled plasma mass spectrometry
CHENG Xiangen123, YANG Huiling3, BAN Junsheng3, YAO Yongsheng3, WANG feng23
1. Henan Nonferrous Metal Mineral Exploration Engineering Research Center, Zhengzhou 450016, China; 2. Henan Province Non-ferrous Metal Geological Mineral Resources Bureau No.6 Geological unit Team, Zhengzhou 450016, China; 3. United Labortories of Henan Nonferrous Geology & Mineral Resources Bureau, Zhengzhou 451464, China 
摘要:建立电感耦合等离子体质谱法测定三水铝土矿中15种有效稀土元素的分析方法。参考三水铝土矿中有效铝的概念,提出了有效稀土元素的概念,并对三水铝土矿中稀土元素的回收利用的可行性进行了评价。模拟低温拜耳法生产氧化铝的工艺,对三水铝土矿中稀土元素溶出过程中的氢氧化钠浓度、溶出温度及时间等条件进行了试验,采用90 g/L氢氧化钠结合微波消解技术对三水铝土矿进行分解,用ICP-MS法测定有效稀土元素,有效稀土元素测定结果的相对标准偏差为0.92%~7.40%(n=7),回收率为98.6%~101.2%。该方法可用于测定三水铝土矿中有效稀土元素,能够对三水铝土矿中稀土元素的回收利用价值进行评价。 
Abstract:A method for the determination of 15 effective rare earth elements in bauxite by inductively coupled plasma mass spectrometry was established. Referring to the concept of effective aluminum in bauxite, the concept of effective rare earth elements was put forward, and the feasibility of recovery and utilization of rare earth elements in bauxite were evaluated. The process of alumina production by Bayer process at low temperature was simulated. The conditions of sodium hydroxide concentration, dissolution temperature and time in the process of rare earth element dissolution in bauxite were tested. The bauxite was decomposed by 90 g/L sodium hydroxide solution combined with microwave digestion technology, and the effective rare earth elements were determined by ICP-MS. The relative standard deviations of effective rare earth element determination results were 0.92%-7.40%(n=7), and the recovery was 98.6%-101.2%. The method is suitable for the determination of effective rare earth elements in bauxite, which can evaluate the recovery and utilization of rare earth elements in bauxite. 
关键词:三水铝土矿;有效稀土元素;微波消解;电感耦合等离子体质谱法 
Keywords:gibbsite; available rare earth element; microwave digestion technology; inductively coupled plasma mass spectrometry 
基金:2016年度河南省“两权价款”地质科研项目(豫财招标采购–2015–1992–03) 
本文引用格式:
程相恩,杨惠玲,班俊生.电感耦合等离子体质谱法测定三水铝土矿中的15种有效稀土元素[J].化学分析计量,2020,29(3):16-20. CHENG X E,YANG H L,BAN J S,et al. Determination of 15 effective rare earth elements in bauxite by inductively coupled plasma mass spectrometry[J]. Chemical analysis and meterage,2020,29(3):16-20. 

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