摘要
基于铝与铬天青S在pH为5.4～5.7的微酸性介质中形成稳定的紫红色配合物,研究了采用铬天青S光度法测定锰矿石中的三氧化二铝。结果表明:铁、钛的干扰可以抗坏血酸和苦杏仁酸消除;基体元素锰的干扰,在以稀盐酸提取熔融物时加入无水乙醇还原锰酸盐、再加盐酸羟胺消除;用国家标准样品进行验证,结果满意。与国标方法相比,该法简便,快速,易于掌握,而且分析成本低,不使用大型仪器,具有推广和应用价值。
Based on aluminium and chromazurine S form stable purple complexes in subacid medium of pH 5.4～5.7, aluminium oxide in manganese ore can be determined by chromazurine S spectrophotome- try. The test results show that interference of iron and titanium can be eliminated using ascorbic acid and mandelic acid,and interference of manganese can be eliminated by reducing manganate using abso- lute ethyl alcohol and oxammonium hydrochloride when extracting fusant using diluted hydrochloric acid. Compared to National standard method, the method is simple, fast, easy and low cost, do not using large instrument and is beneficial to popularity and application.
出处
《湿法冶金》
CAS
北大核心
2012年第4期264-266,共3页
Hydrometallurgy of China
关键词
锰矿石
三氧化二铝
铬天青S
光度法
测定
manganese ore
aluminium oxide
chromazurine S
spectrophotometry
determination
