原子吸收法在非金属元素测定中的应用

ATOMIC ABSORPTION SPECTROSCOPY USED FOR DETERMINATIONS OF NON-METALLIC ELEMENTS

原子吸收光谱法在近年得到了快速发展,尤其是在金属元素的测定方面正日趋成熟。在测定大多数金属元素时,原子吸收光谱法表现出快速、灵敏、选择性好等特点,是测定痕量金属的较好方法。为了扩大原子吸收光谱法的应用领域,直接或间接地利用原子吸收分光光度计测定卤素、氧、硫、氮、

The review discusses the verious analytical methods using atomic absorption spectroscopy to determine non-metallic elements. Those methods were devided into three classes: direct atomic absorption, indirect atomic absorption and molecular absorption spectrometry. Determination by direct method are very difficult, because it needs a complex instrumental system. There are many indirect methods to determine non-metallic elements, but the selectivities of those are not very good. Molecular absorption spectrometry, especially graphite furnace molecular absorption speclrometry, is of good selectivity, high sensitivity and simply operating. Molecular absorption spectrometry becomes a supplement of atomic absorption spectrometry in determinations of non-metallic elements.