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常规的空气—乙炔火焰原子吸收法测定锡灵敏度很低,不能满足化探找矿对锡灵敏度的要求。氢化物—原子吸收法测定锡具有灵敏度高,干扰少的特点,并已有文献报导。但是对共存元素的干扰及干扰的消除问题报导较少,难于直接用于复杂的地质样品分析。 本文采用电加热石英管原子化器、氢化物—原子吸收光谱法对测定地球化学样品中微量锡的最佳条件进行了试验。研究了44种
The conventional air-acetylene flame atomic absorption method for the determination of tin has a very low sensitivity and can not meet the requirements for sensitivity of geochemical prospecting to tin. Hydride - atomic absorption spectrophotometric determination of tin with high sensitivity, less interference and has been reported in the literature. However, there are few reports on the interference of coexisting elements and the elimination of interferences, which makes it difficult to directly use them for complex geological sample analysis. In this paper, the optimal conditions for the determination of trace tin in geochemical samples were tested by using electric heating quartz tube atomizer and hydride generation atomic absorption spectrometry. 44 species were studied