Simultaneous Determination of Three Organophosphorus Pesticides by Differential Pulse Stripping Voltammetry and Chemometrics

摘要: A differential pulse stripping voltammetry method (DPSV) is proposed for the determination of parathion-methyl (PTM), fenitrothion (FT) and parathion (PT) at a hanging mercury drop electrode (HMDE). The voltammograms these three compounds overlap strongly, it difficult to determine individually from their mixtures. Quantitative analysis each pesticide in mixture has been investigated with aid chemometrics prediction performance different methods such as classical least squares (CLS), principal component regression (PCR), partial (PLS), Kalman filter (KF) radial basis function-artificial neural networks (RBF-ANN), was compared. set synthetic mixtures analysed by using methods, found that lowest relative error (RPE) satisfactory % recovery were achieved RBF-ANN procedure. also applied several vegetable samples spiked known amounts pesticides results.