巢湖学院学报
巢湖學院學報
소호학원학보
CHAOHU TEACHERS COLLEGE JOURNAL
2012年
6期
43-45
,共3页
双环已酮草酸二腙(BCO)%光度法%铝合金%铜
雙環已酮草痠二腙(BCO)%光度法%鋁閤金%銅
쌍배이동초산이종(BCO)%광도법%려합금%동
dicyclohexanoneoxalyldihydrazone(BCO)%spectrophotometry%aluminum alloy%copper
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.
研究瞭雙環已酮草痠二腙(BCO)與銅(Ⅱ)的顯色反應,建立瞭直接測定鋁閤金中微量銅的光度分析方法.在氨性緩遲溶液介質中,在錶麵活性劑 CTMAB 作用下,銅(Ⅱ)與BCO 形成藍色的配閤物,配閤物在606 nm 處有最大吸收,銅(Ⅱ)的含量在0~80μg/25 mL範圍內服從比耳定律,錶觀摩爾吸光繫數為1.79×104 L·mol-1·cm-1.該方法簡便快速,應用于鋁閤金中銅的測定,測定結果與標準值相符,得到瞭滿意的結果.
연구료쌍배이동초산이종(BCO)여동(Ⅱ)적현색반응,건립료직접측정려합금중미량동적광도분석방법.재안성완충용액개질중,재표면활성제 CTMAB 작용하,동(Ⅱ)여BCO 형성람색적배합물,배합물재606 nm 처유최대흡수,동(Ⅱ)적함량재0~80μg/25 mL범위내복종비이정률,표관마이흡광계수위1.79×104 L·mol-1·cm-1.해방법간편쾌속,응용우려합금중동적측정,측정결과여표준치상부,득도료만의적결과.
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·H2O-NH4Cl 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(Ⅱ). The apparent molar absorptivity is 1.79×104 L?mol-1?cm-1. The method was rapid and simple to determinate copper in aluminum alloy with satisfactory results.
