【摘要】 ２－（２－吡咯偶氮）苯甲酸与镍显色反应及应用郑恩铭，孙维林台州师范专科学校生化系浙江临海３１７０００２－（２－吡咯偶氮）苯甲酸￣［１］（简称ＰＡＢＡ）的结构式为：本文试验了Ｎｉ￣（２＋）与ＰＡＢＡ的显色反应条件，所拟方法结合预分离技术用于钴精矿和铝合...更多还原

【Abstract】 ickel( )reacts with 2-(2-pyrrolyazo)benzoic acid to form a stable complex,Experimental results show that the maximum absorption of the complex is at 529nm.The optimum acidityis pH 6.9～8.9,at which the molar ratio of Nickel()to the reagent is found to be 1:2.Apparent molar absorption coefficient is 1.68×10￣4L·mol￣(-1)·cm￣(-1).Beer′s law is obeyed from 0 to2g of Ni in 1ml.The method has been successfully applied to the determination of microamounts of Ni in aluminium alloys and cobalt concentrates.更多还原