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.

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

Objective To evaluate the reliability of a method of measuring the total fluoride in fluoride-containing toothpastes with acid diffusion and fluoride selective electrode.

Determination of fluorine in fluoroquinolone drugs by oxygen-flask combustionand fluorine ion selective electrode;