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用自制的步进氢化物发生器和ICP光谱仪观察了As（Ⅲ），ArsenazoⅢ，As（Ⅴ）的砷化氢发生的不同行为．实验得到分别相应于As（Ⅲ），Arsenazo，As（Ⅴ）3种形态的3个时间分辨信号峰的图形．步进氢化物发生有希望成为氢化元素化学形态分析的新的研究方法．
The different behaviors of As (Ⅲ), Arsenazo Ⅲ and As (Ⅴ) in arsine were observed by using homemade step hydride generator and ICP spectrometer. Experiments were obtained corresponding to three patterns of As (Ⅲ), Arsenazo, As (Ⅴ) three time-resolved signal peaks. Stepping hydride promising hope to become a new research method of chemical morphological analysis of hydrogenated elements.