摘要
针对高炉炼铁烟灰的特点，用酸溶解试样，在盐酸（6mol／L）介质中，用甲苯一甲基异丁基酮（6＋3．5）萃取氯镓酸络阴离子，与罗丹明B生成红色络合物，分光光度法测定高炉炼铁烟灰中镓的含量。于有机相中加入无水乙醇从而消除少量残存水相对测定的干扰，方法准确，选择性好。镓在O～30bLg／20mL内符合朗伯一比耳定律。相对标准偏差RSD≤0．63％（n=8），平均回收率为98．5％～101．2％。
Use acid to dissolove sample for iron--smelting cigarette ash of high temperature furnace in accordance with special characteristis. In hydrochloric acid （6 mol/L） solution, use toluene and 4--nethyl--2 --pentanone（6＋3.5） to extract gallium and become a red gallium complex with rhodmine B. Determination of gallium with speetrophotometry. Add dehydrated alcohol and eliminate influence for a little water. The method is accurate and selective. The RSD（%） is not more than 0.63% and recovery of 98.5% - 101.2 %. Beer＇s law is obeyed in the range of 0 - 30 μg/20 mL for gallium .
出处
《有色矿冶》
2009年第2期94-97,共4页
Non-Ferrous Mining and Metallurgy
关键词
镓
罗丹明B
分析
分光光度法
gallium
rhodamine B
analysis
speetrophotometry
