Matrix-precipitation for the Determination of Trace Impurities in High-purity Iron

被引：7
作者：
Matsumiya, Hiroaki [1 ]
Kuromiya, Masahiro [2 ]
Hiraide, Masataka [2 ]
机构：
[1] Nagoya Univ, Div Environm Res, EcoTopia Sci Inst, Chikusa Ku, Nagoya, Aichi 4648603, Japan
[2] Nagoya Univ, Grad Sch Engn, Dept Mol Design & Engn, Chikusa Ku, Nagoya, Aichi 4648603, Japan
来源：
ISIJ INTERNATIONAL | 2013年 / 53卷 / 01期
关键词：
matrix precipitation; iron(III) hydroxide; trace metals; high-purity iron; inductively coupled plasma-mass spectrometry; ATOMIC-ABSORPTION-SPECTROMETRY; EMISSION-SPECTROMETRY; MERCURY CATHODE; SEPARATION; ELEMENTS; STEEL; COPRECIPITATION; EXCHANGE; ANTIMONY; LEAD;
D O I：
10.2355/isijinternational.53.81
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The present paper describes a facile method for the determination of trace impurities in iron metals. This method is based on the selective removal of the matrix element as hydroxide precipitate followed by the determination of desired trace elements left in the solution. To an iron sample solution were added ethylene glycol bis(2-aminoethyl ether)-N,N,N',N'-tetraacetic acid (EGTA) and diethylenetriamine. The iron(III) matrix was almost completely (>99%) precipitated at pH 9.5, while trace elements [Mn(II), Co(II), Ni(II), Cu(II), Zn(II), Cd(II), and Pb(II)] were left in the solution due to the complexation with EGTA and diethylenetriamine. The sufficient removal of the matrix element and negligible loss of trace elements allowed the sensitive determination at ng g(-1) levels by inductively coupled plasma-mass spectrometry.
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页码：81 / 85
页数：5
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