Ciencias Exactas Hydroxyl Radical Linear Models Models, Theoretical Molecular Conformation Molecular descriptors Oxidation-Reduction Pt(100) cluster Quantitative Structure-Activity Relationship Quantitative structure-property relationships Reaction rate constant Replacement method Water Pollutants, Chemical Water Purification Water micropollutant chemistry conformation degradation hydroxyl radical molecular analysis oxidation oxidation reduction reaction pollutant procedures quantitative analysis quantitative structure activity relation reaction rate reactivity regression analysis replacement