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近年来介绍用二环己酮草酰双腙(简称 BCO)比色测定铜的方法,国内已应用在钢铁中铜的测定。有关文献报导锡、铅、铝等元素对铜的测定没有干扰,因此我们考虑在不分离铝的情况下,作直接测定铜的方法试验。利用王水溶样,消除干扰元素后控制发色酸度,使铜与 BCO 试剂形成稳定蓝色络合物,进行比色。在纯铝、铝合金中含铜量的测定范围在0.005～
In recent years, with dicyclohexanone oxalyl double hydrazone (referred to as BCO) colorimetric determination of copper, the domestic has been used in the determination of copper in steel. The literature reports tin, lead, aluminum and other elements of the determination of copper without interference, so we consider the case without separation of aluminum for direct determination of copper test method. Use aqua regia sample to eliminate the interfering elements and control the chromogenic acidity to make copper and BCO reagent form stable blue complex for colorimetry. In pure aluminum, aluminum content of copper in the range of 0.005 ~