A simple

rapid and accurate method is presented for the micro-analysis of fluorine element in fluoropolymers. Fluoropolymers and CF3-containing organic compounds are quantitatively decomposed and titrated. The titration reaction is a stoichiometric one and has a sharp end-point. The absolute error of this method is ±0.3%. Interferences of SO4=

PO4(?)

AsO2- (or AsO4(?)) and CO3(?) can be eliminated by a simple procedure. This method is suitable for microanalysis of F element in C

H

0

N

Cl Br

I

Si

S

P

As-containing fluoropolymers.