Simultaneous determination of acesulfame-K and aspartame using linear sweep voltammetry and multivariate calibration

Abstract

A simple and rapid method to determine acesulfame-K and aspartame simultaneously in power sweeteners, without pretreatment was proposed. This method employs linear sweep voltammetry assisted with multivariate calibration tools, in order to resolve the overlapping signals of both analytes. Multivariate calibrations models were made using a Partial Last Square (PLS) algorithm. In order to increase sensitivity a rotating disk electrode (RDE) at 8000 rpm was used. The sample throughput was 90 samples h-1. The obtained results are in good agreement with that obtained with HPLC method. This paper proposed an alternative methodology for improving the quality control of power sweeteners.