| 石墨炉原子吸收法直接测定高温合金中硅 |
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| 引用本文： | 姚金玉,谢文兵.石墨炉原子吸收法直接测定高温合金中硅[J].分析化学,1995,23(3):284-287. |
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| 作者姓名： | 姚金玉 谢文兵 |
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| 作者单位： | 中国科学院长春应用化学研究所，中国科学院长春应用化学研究所，中国科学院长春应用化学研究所，长春市环境保护研究所 长春130022，长春130022，长春130022 |
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| 摘 要： | 研究了混合基体改进剂，灰北、原子化温度以及共存元素的干扰，采用镧和钙作混合基体改进剂后，硅的灵敏度提高，抗干扰能力增强，可以用石墨炉原子吸收直接测定高温合多中硅。方法特征量为０．２ｎｇ，检出限为２．３μｇ／ｇ，对于含硅量为４００μｇ／ｇ左右的合金样品，相对标准偏差为５％左右，回收率在９０％－１１０％之间。
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| 关 键 词： | 混合基体改进剂 高温合金 硅 原子吸收法 |
Direct Determination of Silicon in High Temperature Alloy by Graphite Furnace Atomic Absorption Spectrometry |
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| Yao Jinyu,Xie Wenbing,Hu Qinglan,Lian Chengzhang.Direct Determination of Silicon in High Temperature Alloy by Graphite Furnace Atomic Absorption Spectrometry[J].Chinese Journal of Analytical Chemistry,1995,23(3):284-287. |
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| Authors: | Yao Jinyu Xie Wenbing Hu Qinglan Lian Chengzhang |
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| Abstract: | The mixed matrix modifier and the aching or atomization temperature of silicon are investigated. The application of La/Ca as the mixed matrix modifier to determine silicon not only enhances the sensitivity but also reduces the interference. The method is used directly for the determination of silicon in high temperature alloy. The characteristic mass is 0. 2 ng, the detection limit is 2. 3 ug/g. For alloy of about 400 ug/g for silicon, the relative standard deviation is 4. 7%-7. 3%, the recovery is 90%-110%. |
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| Keywords: | Graphite furnace high temperature alloy silicon |
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