Publication
Abstract
Particulate matter (PM) and gaseous pollutants inside cultural heritage buildings such as museums and libraries pose a risk to materials. Particles not only cause soiling but are abrasive, provide sites for surface reactions and have a potential to damage artifacts due to their hygroscopic nature.
In addition ammonium nitrate can evaporate after penetration indoors, generating gaseous ammonia and nitric acid, which can damage works of art.