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测定矿石中氟含量的最常用的方法是Willard和Winter的容量法,该法将矿石溶于高氯酸,通过加热将生成的氢氟酸和氢氟硅酸蒸馏出去;用硝酸釷滴定。分析某些矿石,在酸溶前还须用碳酸钠熔融。该法的缺点是费时且需有经验的化验员来判断硝酸針的滴定终点。通常对待一般试验和研究的样品分析,不必要高度准确,而需要较为快速的、不必熟练人员掌握的分析方法,近代氟离子选择电极为我
The most commonly used method for determining the fluorine content of ores is the volumetric method of Willard and Winter, which dissolves the ore in perchloric acid and distills off the hydrofluoric and hydrofluorosilicic acids produced by heating; titration with thorium nitrate. Analysis of some ore, before the acid must be dissolved with sodium carbonate. The disadvantage of this method is that it takes time and an experienced laboratory technician to determine the end point of titration of nitric acid needles. Commonly used for routine testing and research sample analysis, not necessarily highly accurate, and need more rapid, do not have to master the analytical methods, modern fluoride ion selective electrode for me