摘要
用荧光猝灭法研究了５’－硝基水杨基荧光酮（５’－ＮＳＦ）－Ｔｗｅｅｎ－２０体系的测定方法及条件。在０．００６～０．０１ｍｏｌ／Ｌ的Ｈ２ＳＯ４介质中，在Ｔｗｅｅｎ－２０存在下，钛与试剂形成１：４的桔红色络合物，测钛的线性范围为０．０２～５μｇ／２５ｍｌ，检量限为０．８ｎｇ／ｍｌ。方法的灵敏度高，选择性也好．用于测定硅酸盐矿物中的微量钛，结果满意。
Condition of reaction of Ti(Ⅳ) with 5'-NSF was studied by fluorescence quenching method in the presence of surfactant Tween-20 and 0.006～0.01mol/L H2SO4 medium. The method has been used to determine trace amounts of Ti(Ⅳ) in silicaie minerals with high sensitivity and satisfied results. Its linear range covers 0.02～5.0mg/25ml for analysed solution.
出处
《耐火材料》
CAS
北大核心
1996年第3期165-167,共3页
Refractories
