摘要
研究了双环已酮草酸二腙(BCO)与铜(Ⅱ)的显色反应,建立了直接测定铝合金中微量铜的光度分析方法。在氨性缓冲溶液介质中,在表面活性剂CTMAB作用下,铜(Ⅱ)与BCO形成蓝色的配合物,配合物在606 nm处有最大吸收,铜(Ⅱ)的含量在0～80μg/25 mL范围内服从比耳定律,表观摩尔吸光系数为1.79×104 L.mol-1.cm-1。该方法简便快速,应用于铝合金中铜的测定,测定结果与标准值相符,得到了满意的结果。
The color reaction between dicyclohexanoneoxalyldihydrazone （BCO） and copper （ II ） had been studied, and determination method of trace copper in aluminum alloy by spectrophotometry was established. In the presence of surfactant CTMAB and in the NH3. H20-NH4C1 buffer medium, copper（ Ⅱ ） and BCO forms a blue complex, the complex has a maximum absorption at 606 nm. Beers＇s law is obeyed in the range of 0-80 μg in the solution of 25 mL for copper（ 11 ）. The apparent molar absorptivity is 1.79104 L？mol-1？cm-1. The method was rapid and simple to determinate copper in aluminum alloy with satisfactory results.
出处
《巢湖学院学报》
2012年第6期43-45,共3页
Journal of Chaohu University
关键词
双环已酮草酸二腙(BCO)
光度法
铝合金
铜
dicyclohexanoneoxalyldihydrazone（BCO）
spectrophotometry
aluminum alloy
copper
