Vaporization Behavior of Niobium, Tantalum, Uranium and Zirconium in Graphite Furnace ETV-ICP-AES Using Polytetrafluoroethylene as Fluorinating Agent

A new method was developed for the determination of the refractory Nb,Ta,Zr and U by electrothermal vaporization-ICP-AES with the use of polytetrafluoroethylene as fluorinat-ing agent. The fluorinating vaporization process of Nb, Ta, Zr and U was studied,