APPLICATION OF HYDROGEN PEROXIDE SOLUTIONS FOR CLEANING THE SURFACE OF ARCHITECTURAL MONUMENTS MADE OF STONE
The use of solutions of hydrogen peroxide of different concentrations, namely 1%, 17%, 35%, for cleaning the stone vazon surface from the pediment of the main entrance of the church of St. Nicholas in the village of. Vizhnyans of Zolochiv district of Lviv region. Determination of the concentration of the solution of hydrogen peroxide was carried out by permanganametometric titration in acidic medium. Solutions of hydrogen peroxide concentration of 17% and 35% were diluted during titration to a concentration of 0.3 mol / liter.