| 石墨炉原子吸收法测定麦芽粉中的锗和硒 |
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| 引用本文： | 舒永红,牟德海. 石墨炉原子吸收法测定麦芽粉中的锗和硒[J]. 光谱学与光谱分析, 1998, 18(6): 703-706 |
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| 作者姓名： | 舒永红 牟德海 |
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| 作者单位： | 中国广州分析测试中心,510070,广州 |
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| 摘 要： | 本文叙述了平台石墨炉原子吸收法测定麦芽粉中的锗和硒，采用Ｐｄ＋Ｎｉ和Ｐｄ基体改进剂，使锗和硒的灰化温度分别提高到１４００和１２００℃，有效地消除了基体干扰。方法特征量为３１ｐｇ（Ｇｅ）和２３ｐｇ（Ｓｅ），检出限为２８ｐｇＧｅ和６２ｐｇＳｅ（３σ）。对含２２￣１１０μｇ／ｇＧｅ和１８￣３５μｇ／ｇＳｅ的样品测定，相对标准偏差为Ｇｅ３．７￣５．６％（ｎ＝９），Ｓｅ４．３￣６．５％（ｎ＝９），回收率在９
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| 关 键 词： | 平台石墨炉 原子吸收 麦芽粉 锗 硒 测定 |
DETERMINATION OF GERMANIUM AND SELENIUM IN MALT POWDER BY GFAAS |
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| SHU Yonghong,MU Dehai. DETERMINATION OF GERMANIUM AND SELENIUM IN MALT POWDER BY GFAAS[J]. Spectroscopy and Spectral Analysis, 1998, 18(6): 703-706 |
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| Authors: | SHU Yonghong MU Dehai |
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| Affiliation: | Chinese National Analytical Center, 510070 Guangzhou. |
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| Abstract: | A method for determination of germanium and selenium in malt powder has been developed by graphite furnace atomic absorption spectrometry with L'vov platform. While (Pd+Ni) and Pd were used as matrix modifiers,the ashing temperatures of Ge and Se were increased to 1400 and 1200 degrees C respectively,and the matrix inferences were removed. The characteristic masses are 31 pg Ge and 23pg Se(0.0044 A), the detection limits are 28pg Ge and 62pg Se (3 sigma), the precisions (n = 9) are 3. 7-5.6%(Ge) and 4.3-6.5% (Se) and the recoveries are among 90-105%. |
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| Keywords: | Graphite furnace Atomic absorption spectrometry Malt powder Germanium Selenium |
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