【摘要】 研究了钴（Ⅲ）－１－（２－吡啶偶氮）－２－萘酚（ＰＡＮ）及溴化十六烷基三甲铵（ＣＴＭＡＢ）体系测定钴。钴与ＰＡＮ二元配合物摩尔吸光系数可达９４～１０３Ｌ·ｍｏｌ－１·ｃｍ－１，加入表面活性剂后，钴与ＰＡＮ生成三元配合物，摩尔吸光系数值提高到２１２～１０４Ｌ·ｍｏｌ－１·ｃｍ－１，钴含量在０～２５μｇ／５０ｍｌ范围内符合比耳定律，方法应用于测定化学镀钴液中钴的测定。更多还原

【Abstract】 The determination of Cobalt(Ⅲ)by Cobalt(Ⅲ)-1-(2-pyridylazo)-2 naphthol(PAN)-Cetyltrimethylammanium bromide(CTMAB)system was studied in this paper.Normally,the molar absorptirity of binary complex Cobalt(Ⅲ)-PAN is 9.4X10 3 L.mol -1 .cm -1 ;After adding the surfactants CTMAB,it can range up to 2.12X10 4L.mol -1 .cm -1 ,Beers law is the range of 0-25μg/50ml for Cobalt. The method has been applied to the determination of Cobalt in chemical Cobalt-plating solution.更多还原