5-Br-PADAP分光光度法测定微量铁

Determination of Iron by 5-Br-PADAP spectrophotometry

研究了 Fe( ) - 5- Br- PADAP体系的反应条件 ,在 p H=5.5时 ,Fe( ) -5- Br- PADAP能形成稳定的紫红色配合物 ,可用于试样中微量铁的快速测定 ,方法选择性好 ,灵敏度高 ,在波长 555nm处测量 ,表观摩尔吸光系数为 7.9× 1 0 P4。

Fe(Ⅱ)-5-Br-PADAP system is studied. Fe(Ⅱ) and 5-Br-PADAP forms a stable chromatic complex compound at pH=5.5. This compound can be used to determinate micro amount of Fe with perfect selectivity and high sensitivity. ε=7.9×10 4