【摘要】 在硝酸介质中 ,稀土元素与二溴邻羧基偶氮氯膦生成蓝色配合物 ,其最大吸收峰在 64 5nm处 ,在稀土含量 0～16μg/ 2 5mL内符合比尔定律 ,方法选择性好 ,可不经分离直接测定铝合金中稀土含量。更多还原

【Abstract】 The rare earth elements react on DBOKCPA to form a blue complex in the nitric acid,it’s maximum absorption value is 645 nm,the contents of rare earth 0～16 μg/25mL accord with Beer’s law.Most of the coexisting ions do not interfere with the reaction .It has been used to determine the content of rare earth in aluminium alloy.更多还原