| 原子吸收光谱法测定茶叶中7种微量元素 |
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| 引用本文： | 余磊,彭湘君,李银保,黄志勤,李洪亮,李青松.原子吸收光谱法测定茶叶中7种微量元素[J].光谱实验室,2006,23(5):962-965. |
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| 作者姓名： | 余磊 彭湘君 李银保 黄志勤 李洪亮 李青松 |
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| 作者单位： | 赣南医学院药学系,江西省赣州市,341000 |
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| 摘 要： | 用浓硝酸-过氧化氢处理样品,火焰原子吸收光谱法测定江西龙南县映山红茶叶中Fe、Cu、Ca、Mn、Zn 5种微量元素,用石墨炉原子吸收光谱法测定茶叶中Pb、Cd.所测定的茶叶中含有丰富的人体必需的微量元素,Pb、Cd的含量远远低于国家的限定标准,采用此方法回收率在93.70%-102.40%之间,相对标准偏差小于10%.本方法简单、准确,结果令人满意.
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| 关 键 词： | 原子吸收光谱法 茶叶 微量元素 |
| 文章编号： | 1004-8138(2006)05-0962-04 |
| 收稿时间： | 2006-04-28 |
| 修稿时间： | 2006-05-22 |
Determination of Seven Trace Elements in Tea Samples by Atomic Absorption Spectrometry |
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| YU Lei,PENG Xiang-Jun,LI Yin-Bao,HUANG Zhi-Qin,LI Hong-Liang,LI Qing-Song.Determination of Seven Trace Elements in Tea Samples by Atomic Absorption Spectrometry[J].Chinese Journal of Spectroscopy Laboratory,2006,23(5):962-965. |
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| Authors: | YU Lei PENG Xiang-Jun LI Yin-Bao HUANG Zhi-Qin LI Hong-Liang LI Qing-Song |
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| Institution: | Gannan Medical University,Ganzhou,Jiangzi 341000 ,P. R. China |
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| Abstract: | The tea sample was digested by HNO_3-H_2O_2.Five trace elements including Mn,Fe,Zn,Cu in the tea samples from nongnan city,jiangxi province were direct analyzed by flame atomic absorption spectrometry and another two elements of Pb,Cd was analyzed by graphite furnace atomic absorption spectrometry.The results show that the tea included lots of trace elements which is necessary for people,the content of Pb,Cd are much lower than national standard.The recoveries of these microelements are between 93.70% to 102.40% and relative standard deviation less than 10%.The method is simple,rapid,the results are accuracy and satisfactory. |
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| Keywords: | AAS Tea Trace Elements |
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