红外光谱法定量测定石灰岩中游离二氧化硅

The Determination of Free Silica in limestone by the Use of Infrared SPectrometry

采用红外光谱定量测定石灰岩中游离SiO_(2)可以克服化学分析中硅酸盐(高岭石族矿物例外)中SiO_(2)的干扰以及X衍射法不能测定非晶质SiO_(2)相的不足。在样品不含高岭石族矿物时分析的绝对误差小于0.5%。方法具有快速、准确、样品用量少、消耗低等优点。

Infrared spectrometry is an ideal quantitative method to determination the free silica content (fsioz) in limestone. This technique obviates the interference from silicate SiO_(2) in the case of chemical method and the failure of detecting non-crystalline SiO_(2) in the case of X-ray method. The absolute error of f_(SiO_(2)) is less than 0.5%.