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中国无机分析化学:2019,9(4):27-30
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高压密闭消解-电感耦合等离子体质谱法测定煤中稀土元素
马亮帮1, 张大勇2, 腾格尔1, 宁丽荣1, 王杰1
(1.中国石化石油勘探开发研究院无锡石油地质研究所;2.内蒙古自治区一一五地质矿产勘查开发院)
Determination of Rare Earth Elements in Coal by Inductively Coupled Plasma-Mass Spectrometry with High-Pressure Closed Digestion
Ma Liangbang1, Zhang Dayong2, Tenger1, Ning lirong1, wang jie1
(1.Wuxi Research Institute of Petroleum Geology,SINOPEC;2.115 Geological Mineral Exploration and Development Institute of Inner Mongolia Autonomous Region)
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投稿时间:2019-03-03    修订日期:2019-03-19
中文摘要: 煤作为有机物与无机物的复杂混合物,含有多种微量元素,不同的微量元素信息代表不同的地质意义,稀土元素可以提供丰富的沉积环境与物源信息。采用硝酸和氢氟酸的混合体系于高压消解罐中消解样品,建立了电感耦合等离子体质谱法测定16种稀土元素的方法。讨论了样品量、消解试剂、质谱干扰等影响因素,各元素的方法检出限在0.001~0.016μg/g之间,NIST SRD 1632d煤标样实测值和标准值一致,标样测定结果与实测样品结果精密度(RSD,n=11)小于5%,可满足煤中稀土元素的准确测定,为煤类样品中稀土元素分析测定提供了新的参考方法。
Abstract:Coal is a complex and heterogeneous mixture of organic and inorganic compounds containing many different trace elements .Different trace element information represents different geological significance and rare earth elements can provide abundant sedimentary environment and source information. The coal sample was digested in high-pressure closed vessel using HNO3-HF at elevated temperature and the method for determination of 16 rare earth elements was established by inductively coupled plasma-mass spectrometry. The experimental conditions, digestion regents, sampling weight and the factors affecting determination and mass interferences were discussed. The detection limit of the method was between 0.001 and 0.016 μg/g. The measured value of the coal standard sample NIST SRD 1632d is consistent with the certified value , and the precision (RSD , n=11) of the coal sample and standard sample were less than 5%. The analysis results showed the method could be applied for the accurate determination of rare earth elements in coal. It can provide a new reference method for the determination of rare earth elements in coal.
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基金项目:国家自然科学基金重点项目(U1663202);中石化科技部攻关项目(P16079)。
引用文本:
马亮帮,张大勇,腾格尔,宁丽荣,王杰.高压密闭消解-电感耦合等离子体质谱法测定煤中稀土元素[J].中国无机分析化学,2019,9(4):27-30.
Ma Liangbang,Zhang Dayong,Tenger,Ning lirong,wang jie.Determination of Rare Earth Elements in Coal by Inductively Coupled Plasma-Mass Spectrometry with High-Pressure Closed Digestion[J].Chinese Journal of Inorganic Analytical Chemistry,2019,9(4):27-30.

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