粘土及高铝中二氧化硅的分光光度法测定

DETERMINATION OF SILICA IN CLAY AND ALUMINA BY SPECTROPHOTOMETRY

在100ml0.15mol/l盐酸介质中,加入氟化钾溶液将高聚合态的硅酸生成Sif_(+6)^(2-),过量的F^-加入硼酸络合,将经典的硅钼兰分光光度法应用于粘土及高铝中二氧化硅的测定。

High polymeric siltcic acid generates SiF62- by adding potassium fluoride solution into the medium of 100ml,0.15mol/1 hydrochloric acid,and the excessive F-- is put into boric acid complex. The classical H8 [SiMo2O5(Mo2O7)5]spectrophotometry is applied for determination of silica in clay and alumina.