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中国无机分析化学:2020,10(3):39-42
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电热消解-电感耦合等离子体质谱法测定土壤中镱铪钽钨四种高能稀土元素的研究
崔海洋
(中国建筑材料工业地质勘查中心吉林总队)
Determination of four high energy rare earth elements in environmental soil by Inductively Coupled Plasma Mass Spectrometry with electrothermal digestion
Cuihaiyang
(Jilin Branch of China National Geological Exploration Center of Building Materials Industry)
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投稿时间:2019-12-15    修订日期:2020-03-09
中文摘要: 镱(172Yb)、铪(178Hf)、钽(181Ta)、钨(182W)四种稀土元素质量数均高于170,第一电离能在601KJ/mol、656KJ/mol、759KJ/mol、767KJ/mol,高于平均电离能486KJ/mol,属于难电离元素,且在土壤中含量较低。本文通过选择合适的消解体系,采用碰撞模式去除多原子离子干扰,选择193Ir内标校正基体干扰,对上述元素进行准确测试。4种元素校准曲线的线性相关系数均大于0.999,检出限在0.05~0.5μg/g之间,该方法用土壤标准物质GSS-8、GSS-13进行验证,平均RSD在3.2%~11.5%之间,加标回收率88%~108%,各元素的测定值与标准值吻合。
Abstract:The mass numbers of ytterbium, hafnium, tantalum and tungsten are all higher than 170, The first ionization energy is 601KJ/mol, 656KJ/mol, 759KJ/mol, 767KJ/mol, which is higher than the average ionization energy of 486KJ/mol, belonging to the difficult ionization element, and the content in the soil is relatively low. In this paper, by choosing a suitable digestion system, using collision mode to remove polyatomic ion interference, choosing 193Ir internal standard to correct matrix interference, the above elements are tested accurately. The calibration curve r>0.999, the detection limit of the method between 0.05~0.5 μg/g. Using the new method to analysis the national standard soil samples of GSS-8、GSS-13, the average RSD between 3.2%~11.5%, the recovery rate was 88%~108%, determination of the value of each element is consistent with the standard value.
文章编号:     中图分类号:X833    文献标志码:
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崔海洋.电热消解-电感耦合等离子体质谱法测定土壤中镱铪钽钨四种高能稀土元素的研究[J].中国无机分析化学,2020,10(3):39-42.
Cuihaiyang.Determination of four high energy rare earth elements in environmental soil by Inductively Coupled Plasma Mass Spectrometry with electrothermal digestion[J].Chinese Journal of Inorganic Analytical Chemistry,2020,10(3):39-42.

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