摘要
在微酸性溶液中，硅酸与钼酸铵生成可溶性的硅钼杂多酸，经抗坏血酸还原成硅钼蓝，在８１０ｎｍ波长处，硅在０～５０μｇ／１００ｍＬ符合比尔定律。回收率为９８％～１０４％，本法对钼铁中硅的测定达到了满意的结果。
Silicon form silicomolybdate acid complex with silicon acid and ammonium molybdenate in medium of low concentration of 0 12 mol/L nitric acid.Reduction of the above complex,forming silicomolybdate blue with ascorbic acid as reducing agent.The complex exhibits maximum absorption at 810 nm.Beer′s law is obeyed in the range of 0￣50 μg/100 mL silicon,the recovery is 98%￣104%.The method used of determination of silicon in ferromolybdenum with satisfactory results.
出处
《中国钼业》
1996年第6期44-45,共2页
China Molybdenum Industry
关键词
硅
硅钼蓝
钼铁
分光光度法
Silicon, Silicomolybdate blue, Ferromolybdenum, Spectrophotometric method
