重量法测定岩石矿物中二氧化硅的几种凝聚剂

Coagulating Agents for Gravimetric Determination of Silica in Rocks and Minerals

摘要: 文章对十六烷基三甲基溴化铵、聚环氧乙烷、聚乙二醇（４００和６０００）、甲基纤维素和聚乙烯醇等６种凝聚剂在重量法测ＳｉＯ２过程中凝聚硅酸的效果进行了试验，这些操作较动物胶法方便、省时，测定标准样品结果与推荐值相符。

Abstract: rocedures for gravimetric determination of silica have been developed with the application ofsix coagulation agents including cetyltrimethylammonium bromide,polyethylene oxide,polyethylene glycol(400),polyethylene glycol(6000),methyl cellulose and polyvin