摘要
利用热的浓磷酸几乎对所有硅酸盐矿物都能溶解,但对石英(游离二氧化硅)的溶解度很小,硝酸能溶解硫化物及除有机物。这一特性,在一定的条件下分离游离二氧化硅,用重量法测定。
almost all silicate minerals can be dissolved by hot concentrated phosphoric acid, but the solubility of silica (free silica) is very small. Nitric acid can dissolve sulfide and organic matter. This characteristic is to separate free silica under certain conditions and determine by gravimetric method.
引文
[1]北京矿冶研究院.《化学物相分析》P220.
[2]卫生部.<<作业场所空气中粉尘测定方法>>P6.