摘要
单矿物半微量分析中氟的测定通常采用氟试剂比色法,此法灵敏,但费时而繁琐。离子选择电极法是新的电化学分析方法,目前氟电极测定氟已用于常规分析中,但一般岩矿分析,氟电极实测线性范围为1×10^(-1)M—1×10^(-5)M,对于低含量的氟,取样量需在100毫克以上。
This paper introduces a method for directly determining fluorine without any separation procedure.It can be used in presence of ethyl alcohol,and the potassium citrate as ionic strength adjustment buffer(pH 6-6.5).The determinations indicate that this method has some advantages,as high sensitivity and the Nernst linear extent up to 1×10^(-1)M-1×10^(-6)M,one order higher in magnitude than usual ones.Moreover,the method proposed here required less samples in amount(1-5ml.).In general,it is applicable for determining fluorine in minerals.
作者
别婉琳
董光复
Bie Wanlin;Dong Guangfu
出处
《地质科学》
1980年第4期399-402,共4页
Chinese Journal of Geology(Scientia Geologica Sinica)
