Simultaneous determination of peracetic acid and acetic acid by titration with NaOH

Abstract

This article describes and evaluates a titration for simultaneous determination of peracetic acid (PAA) and acetic acid (HAc) in an aqueous solution. The titration is a classic acid–base titration based on the significantly different pK_as of PAA and HAc. In contrast to most of the methods used to assay PAA in aqueous solutions, this method is well suited for automatic determinations. The validation shows that this method is simple, precise, has a high repeatability and is robust to a number of errors known from other PAA determination methods.