An isotachophoresis for the microdetermination of potassium persulphate as initiator in emulsion polymerization

Abstract

An isotachophoresis (IP) was applied to determine the decompositio n rate of potassium persulphate (KPS) as initiator in emulsion polymerization, in comparison with conventional iodometry and ferrometry. For the exact determination, the latter methods needed several milliliters of the emulsion pipetted from the polymerization system, whereas IP did only a few microliters. Moreover, the amount of sulphuric acid produced as the decomposition by-product was simultaneously determined by IP, which is impossible for iodometry and ferrometry.

Unexplored analytics of some novel 3d–4f heterometallic Schiff base complexes

“…It takes also an important role as initiator for emulsion polymerization. 23 The presence of these sulphur species therefore affects many systems of practical importance. Speciation of such anions and their sensing has been rarely examined.…”