DNA Damage upon UV Illumination in the Presence of Inorganic UV-shielding Materials

摘要

White nanoparticles of calcia-doped ceria were prepared from the precipitate by reacting CeCl_3-CaCl_2 mixed solution with NaOH solution at pH 12 and the oxidation with hydrogen peroxide solution at 40°C, followed by the calcination at 700°C for 1 h. Ceria particles generated far less singlet oxygen and caused far less damage to the DNA plasmids upon UV illumination than either the titania or the zinc oxide reference pigments.