摘要
在盐酸羟胺的作用和pH5.0的溶液中,Cu(1)与二溴氯—偶氮氯膦形成1:2的篮色配合物,在620nm处有最大吸收,表观摩尔吸光系数为3.02×10~4L·mol^(-1)·cm^(-1)。当溶液中存在氟化铵掩蔽剂时,大多数其它金属离子不发生干扰Cu(Ⅰ)的显色反应。本方法可用于纯金属及其化合物中微量铜的分析测定,结果十分满意。
By the action of a hydroxylamine hydrochloride reductor,a solution of pH5. 0,Copper (I)forms a 1:2 blue complex with Dibromo-chloro-chlorophosphonazo, which exhibits absorption maximum at 620 nm with apparent molar absorptivity of 3. 02×104 L·mol-1·cm-1. There is no interference by a number of the other metallic ions in the presence of ammonium fluoride. A method has been developed for determination of micro copper in the pure metal and its compounds with satisfactory results.
出处
《湖北大学学报（自然科学版）》
CAS
1992年第4期334-337,共4页
Journal of Hubei University：Natural Science
关键词
铜
显色反应
多卤代偶氮氯膦
Copper Colour reaction Polyhalogenated chlorophosphonazo
