| 微波消解-火焰原子吸收光谱法测定黄芪中八种金属元素的含量 |
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| 引用本文： | 李满秀,刘晓琴.微波消解-火焰原子吸收光谱法测定黄芪中八种金属元素的含量[J].分析科学学报,2009,25(5). |
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| 作者姓名： | 李满秀 刘晓琴 |
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| 作者单位： | 忻州师范学院化学系,山西忻州,034000 |
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| 基金项目： | 山西省高校科技开发研究项目 |
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| 摘 要： | 提出了微波消解-火焰原子吸收光谱法测定黄芪中的八种金属元素含量的方法.实验确定微波消解试样的最佳条件为:HNO_3与HClO_4体积比是4∶1,微波功率为600 W、时间为3 min.实验结果表明:黄芪中含有较丰富Ca、Mg、Fe,Cu、Zn、Mn含量较低,而Pb、Cr未测出.测定的相对标准偏差小于5.4%,加标回收率为93.6%～105.2%.
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| 关 键 词： | 微波消解 火焰原子吸收光谱法 黄芪 金属元素 |
Determination of Eight Metal Elements in Astragalus by Microwave Digestion-Flame Atomic Absorption Spectrometry |
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| LI Man-xiu,LIU Xiao-qin.Determination of Eight Metal Elements in Astragalus by Microwave Digestion-Flame Atomic Absorption Spectrometry[J].Journal of Analytical Science,2009,25(5). |
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| Authors: | LI Man-xiu LIU Xiao-qin |
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| Institution: | LI Man-xiu,LIU Xiao-qin(Department of Chemistry,Xinzhou Teachers' University,Xinzhou 034000) |
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| Abstract: | The microwave digestion-flame atomic absorption spectrometry method was proposed for the determination of eight metal elements in Astragalus. The optimal conditions of microwave digestion was found as HNO_3∶HClO_4 (V/V)=4∶1, microwave power of 600 W and the digestion time of 3 minutes. The experimental results showed that Astragalus was rich in Ca, Mg, Fe, and contained only small amount of Cu, Zn and Mn, while Pb and Cr was not found in it. The relative standard deviation was less than 5.4% and the recovery for the spiked sumple was 93.6%～105.2%. |
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| Keywords: | Microwave assisted digestion Flame atomic absorption spectrometry Astragalus Metal elements |
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