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本文报告于pH5.5(醋酸盐缓冲溶液)的条件下及在水-乙醇(1:1)介质中,Ni~(2+)与2-(5-溴-2-吡啶偶氮)-5-二乙氨基苯酚(5-Br-PADAP)形成紫红色络合物,其最大吸收波长和摩尔吸光系数分别为570nm和1.26×10~5.作者系统研究了用5—Br—PADAP光度测定镍的适宜条件,
This paper reports the effect of Ni 2+ and 2- (5-bromo-2-pyridylazo) -acetic acid on the conditions of pH 5.5 (acetate buffer) and in water-ethanol 5-Br-PADAP to form a purple complex, the maximum absorption wavelength and molar absorption coefficient were 570nm and 1.26 × 10 ~ 5. The author systematically studied using 5-Br-PADAP photometry Suitable conditions for nickel,