| 导数-原子捕集-火焰原子吸收法测定中草药中痕量银 |
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| 引用本文： | 张艳欣,苑春刚,高英,孙汉文,杨莉丽,张德强.导数-原子捕集-火焰原子吸收法测定中草药中痕量银[J].河北大学学报(自然科学版),2001,21(3):283-286. |
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| 作者姓名： | 张艳欣 苑春刚 高英 孙汉文 杨莉丽 张德强 |
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| 作者单位： | 河北大学化学与环境科学学院 |
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| 基金项目： | 河北省自然科学基金资助项目 (2 96 0 6 4)，河北大学博士基金资助项目 |
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| 摘 要： | 建立了导数 -原子捕集 -火焰原子吸收光谱技术测定中草药中痕量银的新方法 ,主要研究了捕集管位置、捕集时间、火焰性质、导数仪灵敏度档等因素对方法灵敏度的影响 .结果表明 ,在 10mV/min导数灵敏度档下 ,捕集时间为 1min ,银的特征质量浓度为 0 .82 2 μg/L ,灵敏度较常规火焰原子吸收提高 1～ 2个数量级 .利用本方法成功地测定了麻黄、柴胡、升麻和甘草中的痕量银 ,回收率为 92 .2 %～ 10 8.6% .
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| 关 键 词： | 导数 原子捕集 火焰原子吸收光谱 中草药 银 |
| 文章编号： | 1000-1565(2001)03-0283-04 |
| 修稿时间： | 2001年3月21日 |
Determination of Silver in Chinese Herbs by Derivative Atom Trapping-Flame Atomic Absorption Spectrometry |
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| ZHANG Yan xin,YUAN Chun gang,GAO Ying,SUN Han wen,YANG Li li,ZHANG De qiang.Determination of Silver in Chinese Herbs by Derivative Atom Trapping-Flame Atomic Absorption Spectrometry[J].Journal of Hebei University (Natural Science Edition),2001,21(3):283-286. |
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| Authors: | ZHANG Yan xin YUAN Chun gang GAO Ying SUN Han wen YANG Li li ZHANG De qiang |
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| Abstract: | A method for the determination of silver in several kinds of Chinese herbs by derivative atom-trapping flame atomic absorption spectrometry(D-AT-FAAS) with an improved coolant quartz-tube has been proposed. The factors influencing the sensitivity of D-AT-FAAS and the linearity of working curve were examined. The detection limits and sensitivities of the method were enhanced by 1 and 2 orders of magnitude, respectively, compared with those of conventional flame atomic absorption spectrometry. Silver in several Chinese herbs has been successfully determined with the recoveries of 92.2%～108.6% |
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| Keywords: | derivative atom trapping flame atomic absorption spectrometry Chinese herb silver |
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