电感耦合等离子体原子发射光谱法测定铜钼矿中铜和钼

doi:10.13228/j.issn.1000-7571.2014.07.011

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摘要研究了电感耦合等离子体原子发射光谱法(ICP-AES)同时测定铜钼矿中铜和钼的条件并建立了测定方法。采用盐酸、硝酸、氢氟酸、高氯酸分解试样,选择波长327.393 nm和202.031 nm谱线分别作为铜和钼分析线,并用谱线背景扣除法消除谱线干扰,在稀盐酸介质中用电感耦合等离子体发射光谱仪测定。方法用于测定国家标准物质(GBW07285、GBW07286、GBW07238)和试验样品,测定结果分别与认定值和国家标准方法的测定值相符。对4种试验样品进行精密度和加标回收试验,测得铜和钼相对标准偏差(RSD)分别在1.2%～2.1%和1.2%～4.8%之间,加标回收率分别在100%～105%和95%～106%范围。

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	林翠芳

关键词 ：铜钼矿, 铜, 钼, 电感耦合等离子体原子发射光谱法

Abstract：An inductively coupled plasma atomic emission spectrometric (ICP-AES) determination method of copper and molybdenum in copper-molybdenum ores was established and simultaneous determination conditions were tested. The sample was digested by HCl, HNO₃, HF and HClO₄. The spectral line 327.393 nm and 202.031 nm were selected as analytical lines for copper and molybdenum, and spectral background deduction method was used for eliminating spectral interference. Then, the sample was determined by ICP-AES in dilute HCl. The proposed method was applied to determine national reference materials (GBW07285, GBW07286, GBW07238) and experimental samples. The results were consistent with the certified values and the results of national standard method. Precision test and standard addition recovery test were conducted on four experimental samples. The relative standard deviation (RSD) of copper and molybdenum were 1.2%-2.1% and 1.2%-4.8%. The recovery was 100%-105% and 95%-106%.

Key words： copper-molybdenum ore copper molybdenum inductively coupled plasma atomic emission spectrometry

收稿日期: 2013-11-11

ZTFLH:

O657.31

作者简介: 林翠芳(1982-), 女, 本科, 工程师, 主要从事岩石矿物分析和实验室质量管理;E-mail:0973323@163.com

引用本文:

林翠芳. 电感耦合等离子体原子发射光谱法测定铜钼矿中铜和钼[J]. 冶金分析, 2014, 34(7): 60-64. LIN Cui-fang. Determination of copper and molybdenum in copper-molybdenum ore by inductively coupled plasma atomic emission spectrometry. , 2014, 34(7): 60-64.

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http://47.93.29.245/Jweb_yjfx/CN/10.13228/j.issn.1000-7571.2014.07.011 或 http://47.93.29.245/Jweb_yjfx/CN/Y2014/V34/I7/60

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