| 氢化物负压发生器—真空无火焰原子化器的原子吸收光谱法测定碲 |
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| 引用本文： | 张宝贵,陶克毅.氢化物负压发生器—真空无火焰原子化器的原子吸收光谱法测定碲[J].高等学校化学学报,1989,10(1):26-29. |
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| 作者姓名： | 张宝贵 陶克毅 |
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| 作者单位： | 南开大学环境科学系
(张宝贵)，南开大学化学系
(陶克毅)，南开大学环境科学系(冯建兴) |
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| 摘 要： | 在负压发生器中用1％NaBH_4将Te(Ⅳ)还原成碲化氢后,再加入2mL氧气,用真空泵将氧与碲化氢的混合物吸进电热真空石英管中,同时测定原子吸收光谱。加入的氧与硼氢化钠分解产生的氢反应生成水分子,消除了氢对碲的干扰。
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| 关 键 词： | 碲 负压发生器 原子吸收光谱 |
Determination of Tellurium with Atomic Absorption Spectro- metry by Using Hydride Generation Under Subatmos- pheric Pressure and Vacuum Flameless Atomizer |
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| Zhang Baogui,Tao Keyi,Feng Jianxing.Determination of Tellurium with Atomic Absorption Spectro- metry by Using Hydride Generation Under Subatmos- pheric Pressure and Vacuum Flameless Atomizer[J].Chemical Research In Chinese Universities,1989,10(1):26-29. |
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| Authors: | Zhang Baogui Tao Keyi Feng Jianxing |
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| Abstract: | A new method for the determination of tellurium at sub-microgram levels by vacuum flameless atomic absorption spectrometry is described. Tellurium hydride is generated and collected under subatmospheric pressure. The hydride is then put into a vacuum quartz tube with a vacuum pump. It was found that the sensitivity of determining tellurium was increased by adding a small amount of oxygen or air to the hydride generator after the formation of the hydride. The detection limit (based on three times the standard deviation of twenty blank measurements) was 0.026ng. Ten replicate determinations of 2.ong Te gave a relative standard deviation of 3.9%. |
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| Keywords: | Flameless atomic absorption spectrometry Hydride generation Tellurium |
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