Determination of the trace fluorin in vegetables with the open type ashing-acid dissolving-fluoride selective electrode;

This paper presents fluoride electrode method to deterine silicon content in steels The silicon in steel is firstly converted into silicate solution,which is precipitated to K_2SiF_6 by adding an excess of NaF standard solution and KCl solution.

A rapid method for determination of flouride in toothpaste by fluoride selective electrode is introduced in this paper.

MethodsWe collected the drinking water sanrples of all the administrative villages in Huaibei city and determined the contents of fluorine in water by fluoride selective electrode.

, by the standard addition method to eliminate the effects of salt, the trace fluorine in seawater was determined with fluoride ion selective electrode determing the potential in seawater at pH=6.

This paper adopted potentiometry, applied the saturated calomel electrode (SCE) as reference electrode and fluoride ion selective electrode as indicator electro.

The fluorine in ores was determinated by fluorine ion selective electrode with the limit of 0.

In this work,the fluorine ion selective electrode was used as indicative electrode,a standard calomel electrode as reference electrode to investigate the effect of surfactant SDS on the sensitivity of ion selective electrode.