氟硅酸钾容量法测定硅锰合金中硅的含量  

Determination of Silicon Content in Siliconmanganese Alloy by Potassium Fluosilicate Volumetric Method

作　　者：王莹莹 WANG Yingying(Shandong Metallurgical Sciences Research Institute Co.,Ltd.,Jinan 250014,China)

机构地区：[1]山东省冶金科学研究院有限公司标准物质中心,山东济南250014

出　　处：《山东冶金》2023年第1期48-49,共2页Shandong Metallurgy

摘　　要：运用硝酸-氢氟酸溶解硅锰合金,将硅锰合金中的硅转换成氟硅酸钾沉淀,氟硅酸钾沉淀在热水的作用下分解出氢氟酸,加入酚酞,用氢氧化钠滴定至微红色为终点。该方法简单快捷,重现性好,能较好的进行硅元素的定值分析工作。The silicomanganese alloy is dissolved with nitric acid-hydrofluoric acid,and the silicon in the silicomanganese alloy is converted into potassium fluorosilicate precipitation.The potassium fluorosilicate precipitation is decomposed into hydrofluoric acid under the action of hot water,and phenolphthalein is added,and titrated with sodium hydroxide to the end point of slight red.This method is simple,fast and reproducible,and it can be used for the determination of silicon.

关 键 词：硅锰合金 氟硅酸钾 硅含量 

分 类 号：O655.2[理学—分析化学]