电感耦合等离子体原子发射光谱法测定铁酸钙中氧化铝、氧化镁和磷

doi:10.13228/j.issn.1000-7571.2014.04.015

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摘要用盐酸-氢氟酸溶解试样, 高氯酸冒烟除氟后, 在稀盐酸介质中, 以396.152 nm、285.213 nm、178.287 nm波长的谱线分别作为铝、镁、磷的分析线, 采用电感耦合等离子体原子发射光谱法(ICP-AES)测定铁酸钙中氧化铝、氧化镁和磷的含量。基体效应和谱线干扰分别采用基体匹配法和谱线背景扣除法消除。试验结果表明, 铁酸钙中氧化铝、氧化镁和磷在一定浓度范围内与其强度具有良好的线性关系, 相关系数r在0.999 8以上。准确度和精密度考察得到3种成分的加标回收率在99%～104%之间, 相对标准偏差(RSD)在0.45%～1.5%之间;对铁酸钙实际样品进行分析, 所得结果与湿法分析结果相符。

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	刘文甫
	应腾远
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关键词 ：电感耦合等离子体原子发射光谱(ICP-AES), 铁酸钙, 铝, 镁, 磷, 酸溶, 基体匹配

Abstract：The sample was dissolved with hydrochloric acid-hydrofluoric acid and fluorine was removed with perchloric acid smoking. In dilute hydrochloric acid, the aluminum oxide, magnesium oxide and phosphorus in calcium ferrite was determined by inductively coupled plasma atomic emission spectrometry(ICP-AES)at 396.152 nm for aluminum, 285.213 nm for magnesium and 178.287 nm for phosphorus. The matrix effect and spectral line interference was respectively removed with matrix matching and spectral line background deduction method. It showed that the concentration of aluminum oxide, magnesium oxide and phosphorous in calcium ferrite showed a good linear relationship with its intensity within certain range with correlation coefficient higher than 0.999 8. Through accuracy and precision test, the standard addition recovery of the three elements were between 99%-104% and the relative standard deviation (RSD) was between 0.45%-1.5%. The determination results of practical calcium ferrite samples were consistent with those of wet analysis.

Key words： inductively coupled plasma atomic emission spectrometry (ICP-AES) calcium ferrite aluminium magnesium phosphorus acid dissolution matrix matching

收稿日期: 2013-06-08

ZTFLH:

O657.31

作者简介: 刘文甫(1984—), 男, 工程师, 从事进出口矿产品检测及仪器分析工作;

引用本文:

刘文甫, 应腾远, 王丽, 孙富涛. 电感耦合等离子体原子发射光谱法测定铁酸钙中氧化铝、氧化镁和磷[J]. 冶金分析, 2014, 34(4): 70-73. LIU Wen-fu, YING Teng-yuan, WANG Li, SUN Fu-tao. Determination of aluminum oxide, magnesium oxideand phosphorus in calcium ferrite by inductively coupled plasma atomic emission spectrometry. , 2014, 34(4): 70-73.

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http://47.93.29.245/Jweb_yjfx/CN/10.13228/j.issn.1000-7571.2014.04.015 或 http://47.93.29.245/Jweb_yjfx/CN/Y2014/V34/I4/70

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