| 光谱学与光谱分析 |
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| Simultaneous Determination of Trace Amounts of Iron(Ⅱ), Copper(Ⅰ) and Cobalt(Ⅱ) in Aloe by Second Derivative Peak Area Spectrophotometry |
| LI Hong-mei, SU Li-hong, CHEN Rui-zhan |
| Department of Chemistry, Changchun Teachers College, Changchun 130032, China |
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Abstract A new method for simultaneous determination of iron(Ⅱ), copper(Ⅰ) and cobalt(Ⅱ) was established by second derivative peak area spectrophotometry in chromogenic system of 1,10-phenanthroline. The method could avoid disturbing by some ions. The accuracy and sensitivity were improved. There is a linear relationship in the range of 0.0-8.5 μg·mL-1 for Fe(Ⅱ); of 0.0-7.3 μg·mL-1 for Cu(Ⅰ); and of 0.0-5.9 μg·mL-1 for Co(Ⅱ). The method has been applied to simultaneous determination of iron(Ⅱ), copper(Ⅰ) and cobalt(Ⅱ) in aloe with satisfactory results. The average recovery is 98.6%-102% and the RSD is 0.1%-0.2%. There is no remarkable difference between these results and those of ICP-AES method.
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Received: 2002-12-16
Accepted: 2003-05-26
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Corresponding Authors:
LI Hong-mei
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| Cite this article: |
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LI Hong-mei,SU Li-hong,CHEN Rui-zhan. Simultaneous Determination of Trace Amounts of Iron(Ⅱ), Copper(Ⅰ) and Cobalt(Ⅱ) in Aloe by Second Derivative Peak Area Spectrophotometry [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(04): 463-465.
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http://www.gpxygpfx.com/EN/Y2004/V24/I04/463 |
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