| 硫酸铵-Tris改进剂石墨炉原子吸收光谱法测定镉 |
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| 引用本文： | 邵光玓, 李鲲, 单孝全. 硫酸铵-Tris改进剂石墨炉原子吸收光谱法测定镉[J]. 工程科学学报, 1993, 15(4): 429-435. DOI: 10.13374/j.issn1001-053x.1993.04.021 |
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| 作者姓名： | 邵光玓 李鲲 单孝全 |
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| 摘 要： | 拟订了测定环境及生物样品中镉的平台石墨炉原子吸收光谱法。用硫酸铵和三羟甲基氨基甲烷(简称Tris)作为化学改进剂。在该混合改进剂的存在下,镉的允许灰化温度提高到850℃,与(NH4)3PO4-Mg(NO3)2或(NH4)2HPO4-HPO3作改进剂相比,测镉的灵敏度也得到改善。研究了稳定作用机理。
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| 关 键 词： | 原于吸收光谱法 镉 化学改进剂 硫酸铵-Tris 生物样品 |
| 收稿时间： | 1992-09-21 |
Determination of Cadmium by Graphite Furnace Atomic Absorption Spectrometry Using Ammonium Sulphate-Tris modifier |
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| Shao Guangdi, Li Kun, Dan Xiaoquan. Determination of Cadmium by Graphite Furnace Atomic Absorption Spectrometry Using Ammonium Sulphate-Tris modifier[J]. Chinese Journal of Engineering, 1993, 15(4): 429-435. DOI: 10.13374/j.issn1001-053x.1993.04.021 |
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| Authors: | Shao Guangdi Li Kun Dan Xiaoquan |
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| Abstract: | A method has been developed for the determination of Cd in enviromental and biological samples by platform graphite furnace atomic absorption spectrometry. Ammonium sulphate and tris-(hydroxymethyl)-aminomethane (Tris) were employed as a chemical modifier. The tolerable pyrolysis temperature for Cd was raised to 850℃ in the presence of modifier, the sensitivity for the determination of Cd was also improved if compared with that obtained by using (NH4)3PO4-Mg(NO3)2 and (NH4)2PO4-HNO3 as chemical modifier. |
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| Keywords: | atomic adsorption spectrometry cadmium chemical modification (NH4)2SO4-Tris biological samples |
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