1. Department of Analytical Chemistry and Organic Chemistry. Universitat Rovira i Virgili, Pl. Imperial 1, 43005, Tarragona, Spain (P.M.R., J.F., I.R.); and “Ormylia” Art Diagnosis Centre, Sacred Convent of the Annunciation IMSP Ormylia-Chalkidiki EL-63071 Ormylia, Greece (K.S.A.)