| 增感效应导数火焰原子吸收光谱测定金属铜和铜合金中的微量铬 |
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| 引用本文： | 孙汉文 陈兰菊. 增感效应导数火焰原子吸收光谱测定金属铜和铜合金中的微量铬[J]. 分析化学, 1998, 26(4): 410-413 |
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| 作者姓名： | 孙汉文 陈兰菊 |
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| 作者单位： | 河北大学化学系!保定071002 |
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| 摘 要： | 提出了增感效应导数火焰原子吸收光谱测定金属铜和铜合金中微量铬的新方法。研究了表面活性剂十二烷基硫酸钠对铬的增感效果。导数技术与增感效应相结合的可使火焰原子吸收光谱的灵敏度提高６８倍。本法测定金属铜和铜合金中的微量铬取得了满意效果。
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| 关 键 词： | 增感效应 导数 火焰原子吸收 测定 铜合金 铬 |
Determination of Trace Chromium in Copper and Copper -alloy by Enhancing Effect Flame Atomic Absorption Spectrometry With Derivative Technique |
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| Sun Hanwen,Chen.Lanju,Yang Lili,Sun Jianming,Zhang Deqiang. Determination of Trace Chromium in Copper and Copper -alloy by Enhancing Effect Flame Atomic Absorption Spectrometry With Derivative Technique[J]. Chinese Journal of Analytical Chemistry, 1998, 26(4): 410-413 |
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| Authors: | Sun Hanwen Chen.Lanju Yang Lili Sun Jianming Zhang Deqiang |
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| Abstract: | A new method for the determination of trace chromium in copper and copper alloy by enhancing effect-flame atomic absorption spectrometry with derivative technique is pro- posed. The enhaning effect of sodium dodectyl sulfate on chromium was investigated. The sensitivity for the determination of chromium was enhanced 68 times than that of convention- al flame atomic absorption spectrometry. The detection limit of this method is 0. 0076 mg/L. The method has been applied to the determination of Cr in the samples with satisfactory re- sults. |
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| Keywords: | Enhancing effect derivative flame atomtic absorption spectrometry copper copper alloy chromium |
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