【摘要】 钯 (Ⅱ )与偶氮氯膦Ⅲ在硫酸介质中可形成 1∶1的蓝色配合物 ,其最大吸收波长位于 6 44nm处 ,表观摩尔吸光系数ε64 4=2 .4× 10 4 L/(mol·cm) ,钯含量在 0 .1～ 1.5mg/L范围内符合朗比定律 .该法简便、快速 ,可在水相中直接测定微量钯 .用于含钯精矿、阳极泥等样品中钯含量的测定 ,结果满意更多还原

【Abstract】 The color reaction between palladium and chlorophosphonazo Ⅲ has been studied. It was found that palladium reacts with chlorophosphonazo Ⅲ to form a 1∶1 blue complex in H\-2SO\-4 medium. The complex exhibits a maximum absorption at 644 nm with an apparent molar absorptivity of 2.4×10\+4 L/(mol·cm). Beer’s law is obeyed in the range of 0.1～1.5 mg/L Pd(Ⅱ). The method proposed was applied to the determination of palladium in refined ore and anode mud samples with satisfactory results.更多还原