铱(Ⅳ)在硫脲(0.07M),碘化钾(0.2M)和盐酸(2N)的混合底液中有一个氢的催化波。在自联振动子方波极谱仪上峰电位约为-0.91伏(对石墨电极),利用此催化波可测1.10~(-6)—5.10~(-8)M的铱。研究了催化波的性质,从电流与汞柱高度的关系,表面活性物质的影响以及瞬时电流曲线等实验,认为是铱(Ⅲ)-硫脲-碘离子络合物吸附于汞滴而引起的氢的催化波。 Iridium (IV) has a catalytic wave of hydrogen in a mixed liquid of thiourea (0.07M), potassium iodide (0.2M) and hydrochloric acid (2N). In the self-vibrator square wave polarography peak potential of about -0.91 volts (for graphite electrodes), the use of this catalytic wave measured 1.10 -6 -6.10 -5 M iridium. The properties of the catalytic wave were investigated. The experiments were carried out on the relationship between the current and the mercury column height, the influence of the surface active material and the transient current curve. It was considered that the iridium (Ⅲ) -thiourea-iodine ion complex was adsorbed on the mercury droplet Hydrogen catalytic wave.