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二十多年来,原子吸收光谱分析法以其分析灵敏度高、检测限低、方法简便、快速、经济的特点而蜚声于分析化学界。直至今日,对于原子吸收光谱法来说,原子化技术和原子化机理仍是研究的重要课题。近年来,固体试样直接原子化原子吸收光谱法(以下简称固体试样原子吸收法)发展较快,越来越获得分析工作者的重视。与常规原子吸收法比较,该法的主要优点是试样中无需加入化学试剂,省却样品分解、分离或富集等手续,减少了污染的来源和试样损失的可能性,基体效应较小和分析灵敏度较高等。但也还存在一些缺点,主要是当取样量较少而试样又不
For more than two decades, AAS has become famous in the field of analytical chemistry for its high sensitivity, low detection limit, simple, rapid and economical method. Until now, atomic atomization spectroscopy and atomization techniques are still an important issue to be studied. In recent years, the solid sample direct atomization atomic absorption spectrometry (hereinafter referred to as solid sample atomic absorption method) developed rapidly, more and more analysts have received the attention. Compared with the conventional atomic absorption method, the main advantage of this method is that no chemical reagents need to be added to the sample and the procedures such as sample decomposition, separation or enrichment are saved, the sources of pollution and the possibility of sample loss are reduced, the matrix effect is small and Analysis of higher sensitivity. But there are still some shortcomings, mainly when the sample volume is less and the sample is not