POULTICE FOR REMOVING METAL POLLUTANTS OF SURFACE OF POROUS CULTURAL HERITAGE AND METHOD FOR REMOVING THE METAL POLLUTANTS USING THE SAME

摘要

PURPOSE: A poultice for removing metal pollutants from the surface of a porous cultural heritage and a method thereof are provided to clean off metal pollutants from a localized region of a porous cultural heritage with a small amount of cleaning agent. CONSTITUTION: A poultice for removing metal pollutants from the surface of a porous cultural heritage comprises oxalic acid as flux and a poulticing material. The poulticing material is bentonite, sepiolite or active carbon fiber. The poulticing material and oxalic acid are mixed at a weight ratio of 1:3-5.