UV Spectrophotometric Method Development for the Determination of Iron and Aluminum in Natural Waters and Evaluation of the data Obtained from the Calibration of Chemometric Methods

In this study, principal component analysis method (pca), principal component regression method (pcr), partial least squares method (pls) of chemometry calibration methods, are successfully realized on quantitation of fe³⁺ and al³⁺ present at natural water. the data gathered from uv- visible spectroscopy are evaluated chemometrically. in the application two distinctive ligand chrome azurol s (cas) and pyrocatechol violet (pcv) are tested and studies are proceeded with cas due to mor e stable results that are obtained. optimum parameters (ligand amount, ph, waiting period, relation between metal concentration and absorbance, foreign ion effect) and conditions of fe³⁺ and al³⁺ cas and their complexes are determined with spectrophotometric methods. after the optimum conditions are provided, spectrophotometric determinations of natural water including fe³⁺ and al³⁺ are realized and obtained data are evaluated as chemometry.