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氢化物原子吸收光谱法测定锡具有灵敏、快速、准确的特点,并已成为地球化学样品中微量锡的例行分析方法。但是,以电加热石英管为原子化器的氢化法,由于干扰机理复杂,致使测定条件要求较严,不易控制,气相干扰严重,较难消除,使应用范围受到一定的限制。改变原子化器,减少气相干扰,使试验条件更易于掌握,使氢化法有更宽的应用范围和更好的精度。为此,我们使用杨密云、郭小伟等提出并提供的缝式石英管原子化器对测定锡的基本条件进行了系统的研究,并建立了一个切实可行的微量锡的分析方法。
The determination of tin by hydride generation atomic absorption spectrometry is sensitive, rapid and accurate, and has become a routine analytical method for trace tin in geochemical samples. However, the hydrogenation method using electric quartz tube as the atomizer has the limitation of application due to the complicated interference mechanism, the strict requirement of measurement conditions, the difficulty of control and the severe gas phase interference. Change the atomizer to reduce the gas phase interference, the test conditions easier to grasp, so that the hydrogenation method has a wider range of applications and better accuracy. To this end, we use Yang Miyun, Guo Xiaowei proposed and provided by the seam quartz tube atomizer to determine the basic conditions for the determination of tin, and to establish a practical trace tin analysis.