| 石墨炉原子吸收无标样法测定海水Mn的研究 |
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| 引用本文： | 杨秀环,唐宝英,张展霞. 石墨炉原子吸收无标样法测定海水Mn的研究[J]. 中山大学学报(自然科学版), 1988, 0(1) |
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| 作者姓名： | 杨秀环 唐宝英 张展霞 |
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| 作者单位： | 中山大学化学系，中山大学化学系，中山大学化学系 |
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| 摘 要： | 本文建立了简易的操作条件,获得双蒸水和海水基体中Mn的特征质量值(m_0)都很相近.对5个海水样品作无标样测定,用双蒸水中的m_0计算含Mn量,与传统分析方法比较,均符合分析上的要求.本文还讨论了柠檬酸抑制海水基体的干扰和改善Mn原子化过程的作用.此法亦适用于河水、自来水和井水的测定.
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| 关 键 词： | 无标样分析 特征质量值 柠檬酸 石墨炉原子吸收光谱法 Mn |
Study of Determination of Mn in Seawater by Standardless Graphite Furnace Atomic Absorption Spectroscopy |
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| Yang Xiuhuan Tang Baoying Zhang Zhanxia. Study of Determination of Mn in Seawater by Standardless Graphite Furnace Atomic Absorption Spectroscopy[J]. Acta Scientiarum Naturalium Universitatis Sunyatseni, 1988, 0(1) |
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| Authors: | Yang Xiuhuan Tang Baoying Zhang Zhanxia |
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| Affiliation: | Yang Xiuhuan Tang Baoying Zhang Zhanxia |
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| Abstract: | The possibility cf standardless analysis in the determination of Mn in seawater has been investigated. To eliminate the seawater matrix interferences. citric acid was selected as the matrix modifier, and the peak area integration technique and pyrolytically coated tube were applied. The average characteristic mass values m_0 were 2.64 pg for Mn in seawater samples and 2.70 pg for Mn in doubled distilled water. By using the m_0 obtained from sample standard solution, i.e.2.70 pg, the concentrations of Mn in five different seawater samples were calculated with a relative standard deviation of 5.0%. The results agree quite well with those obtained by the conventional analytical calibration method and by the standard addition method, showing the possibility of applying standardless analysis to the determination of Mn in seawater. The absolute detection limit for Mn in seawater is 0.87 pg. |
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| Keywords: | standardlcss analysis characteristic mass value citric acid graphite furnace atomic absorption spectroscopy Mn |
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