电感耦合等离子体质谱法测定煤中11种元素

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摘要样品经混酸溶解后，采用电感耦合等离子体质谱法(ICP-MS)测定了煤中磷、钒、铬、钴、镍、铜、锌、镓、镉、铅、铀的含量。对仪器工作参数进行了优化：选择适宜待测元素的同位素以及选用干扰元素校正方程克服了质谱干扰：以¹⁰³Rh和¹⁸⁷Re为内标进行校正，降低了分析信号漂移对测定结果的影响。结果表明，磷、钒、铬、钴、镍、铜、锌、镓、镉、铅、铀的检出限在0.02～3.75μg/g之间。方法用于煤实际样品分析，所得结果与标准方法相一致，相对标准偏差(n=11)小于5.4%，加标回收率为94%～107%。

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	杨金辉
	张小毅

关键词 ：电感耦合等离子体质谱, 煤, 质谱干扰

Abstract：After coal samples were dissolved with mixed acid, eleven elements of phosphorus, vanadium, chromium, cobalt, nickel, copper, zinc, gallium, cadmium, lead, uranium in solution were determined simultaneously by inductively coupled plasma mass spectrometry. The working parameters of instrument were optimized. The mass spectrometry interference was overcome by the selection of proper isotope for testing elements and correction equation for interference elements. ¹⁰³Rh and ¹⁸⁷Re were used as internal standard elements for correction to reduce the influence of analytical signal drifting on the determination results. The results showed that, the detection limits of phosphorus, vanadium, chromium, cobalt, nickel, copper, zinc, gallium, cadmium, lead and uranium were between 0.02-3.75 μg/g. The proposed method was applied to the determination of coal actual samples. The results were consistent with those obtained by the standard method. The relative standard deviation (RSD, n=11) was less than 5.4%, and the recoveries of standard addition were between 94% and 107%.

Key words： inductively coupled plasma mass spectrometry coal mass spectral interference

收稿日期: 2013-10-11

ZTFLH:

O657.63

作者简介: 杨金辉(1975-)，女，工程师，从事岩矿测试工作;E-mail:yangjhzy@163.com

引用本文:

杨金辉，张小毅. 电感耦合等离子体质谱法测定煤中11种元素[J]. 冶金分析, 2013, 33(9): 8-13. YANG Jin-hui, ZHANG Xiao-yi. Determination of eleven elements in coal by inductively coupled plasma mass spectrometry. , 2013, 33(9): 8-13.

链接本文:

http://47.93.29.245/Jweb_yjfx/CN/ 或 http://47.93.29.245/Jweb_yjfx/CN/Y2013/V33/I9/8


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