Abstrato

Chemometric assisted for the simultaneous spectrophotometric determination of calcium and magnesiumin natural water

Chemometric assisted for the simultaneous spectrophotometric determination of calcium and magnesiumin natural water

Amethod for simultaneous determination of calciumandmagnesiumin natural waters using multivariate calibration methods are proposed. The method is based on the development of the reaction between the analytes and Bromopyrogallol red at pH 9.50. Principal Component Regression (PCR), Partial Least Squares (PLS) and Artificial Neural Network Calibration (ANN) methods were successfully applied to themulti - component analysis of the binary containing substances in natural waters. PCR, PLS and ANN methods are suitable absorfor the quantitative resolution of themixtures of these substances and this approach doesnÂ’t require any separation and extraction steps. Under the working conditions, the proposed method were successfully applied to simultaneous determination of calciumand magnesiumin natural waters.