铁矿石中微量铜的测定方法研究

Determination of Trace Copper in Iron Ore

现行的铁矿石中微量铜的测定方法,是用双环己酮草酰双腙(BCO)与Cu2+反应显色,然后进行吸光度测定.本法对已有的方法进行了改进:采用OH-离子沉淀去除Fe3+、A l3+,在pH值为8.5~9.3的环境下让Cu2+与BCO进行显色反应.研究证实:改进后的方法分析可靠,测定快速,能满足一般化验室对铁矿石中微量铜的测定需要.

At present,the amount of trace copper is determined by absorbency following the reaction of BCO with Cu^(2+).The paper puts forward some improvement made on the existing method: remove Fe^(3+),and Al^(3+)by OH-ion precipitation and make Cu^(2+)react with BCO with PH at 8.5~9.3.This method,proved to be reliable and quick in determination,can satisfy the need of trace copper determination in average laboratories.