| 双波长分光光度法测定钴合金中微量铁 |
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| 引用本文： | 陈华萍 李树伟. 双波长分光光度法测定钴合金中微量铁[J]. 四川师范大学学报(自然科学版), 2000, 23(4): 400-402 |
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| 作者姓名： | 陈华萍 李树伟 |
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| 作者单位： | [1]四川农业大学基础部 [2]四川师范大学写生命科学学院 |
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| 摘 要： | 报告了双波长等吸收点分光光度法测定钴基高温合金中微量铁的方法：在ＰＨ＝３．０的甲酸－ＮａＯＨ缓冲溶液的条件下，用二安替比啉甲烷作为显色剂，选择４５０ｎｍ为测量波长，５４８ｎｍ作为参比波长，测定两波长下的吸光度差值△Ａ。克服了繁复的分离操作手续。方法简便、快速、准确度高、重现性好，实际测定钴基高温合金取得了满意的效果，也可用于铜合金等样品中微量铁的分析。
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| 关 键 词： | 双波长分光光度法 钴合金 铁分析 |
The Determination of Micro-iron in Cobalt Alloys by Double Wavelength Spectrophotometry |
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| CHEN Hua-ping-,LI Shu-wei-. The Determination of Micro-iron in Cobalt Alloys by Double Wavelength Spectrophotometry[J]. Journal of Sichuan Normal University(Natural Science), 2000, 23(4): 400-402 |
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| Authors: | CHEN Hua-ping- LI Shu-wei- |
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| Affiliation: | CHEN Hua-ping-1,LI Shu-wei-2 |
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| Abstract: | This paper reports a method of deter mi nation of micro-iron in cobalt alloys by double wavelength spectrophotometry at isoabsorptive point. In pH=3.0 HCOOH-NaOH buffer solution, diantipyryl methan e (DAPM) is used as developer, measuring wavelength is 450 nm and reference wave length is 548 nm. The method is simple, rapid and accurate. This method may be a lso used for the analysis of micro-iron in copper alloys. |
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| Keywords: | Double wavelength spectrophotometry Iron Cobalt alloys |
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