【摘要】 在pH =6 50的HAc -NH4 Ac缓冲介质中 ,在非离子型表面活性剂Tritonx -10 0存在下 ,镍 (Ⅱ )和铜 (Ⅱ )与 5-Cl-PADAB形成稳定的有色络合物。有色络合物最大吸收波长位于 52 0nm处 ,表观摩尔吸光系数分别为 4 7× 10 4 L/(mol·cm)和 4 6× 10 4L/(mol·cm) ,镍的质量浓度在 0～ 1 0 0mg/L ,铜的质量浓度在 0～ 1 12mg/L范围内符合比尔定律。该方法用于钢样中镍和铜的同时测定 ,获得满意结果更多还原

【Abstract】 Under the buffer medium of HAc-NH 4Ac of pH 6.50,in the existence of nonionic model of surface active agent Tritonx-100,Ni(Ⅱ) and Cu(Ⅱ) can form stable color complexes with 5-Cl-PADAB.The color complexes of maximum absorption wavelength are at 520nm,the apparent molor absorption coefficient are 4.7×10 4 L/(mol·cm) and 4.6×10 4L/(mol·cm).Beer’s law is obeyed in the concentration range of 0～1.00mg/L for Ni(Ⅱ) and 0～ 1.12mg/L for Cu(Ⅱ).The methord has been applied to the determination of the Nickel and Copper content of steel samples,the result of which is quite satisfactory.更多还原