Carbon air pollution reflected in deposits on chosen building materials of Prague Castle

0372368 - ÚSMH 2012 RIV NL eng J - Journal Article
Sýkorová, Ivana - Havelcová, Martina - Zeman, Antonín - Trejtnarová, Hana
Carbon air pollution reflected in deposits on chosen building materials of Prague Castle.
Science of the Total Environment. Roč. 409, č. 21 (2011), s. 4606-4611. ISSN 0048-9697. E-ISSN 1879-1026
R&D Projects: GA AV ČR IAA300460804
Institutional research plan: CEZ:AV0Z30460519; CEZ:AV0Z20710524
Keywords : historical building materials * air pollution * carbonaceous matter
Subject RIV: DD - Geochemistry
Impact factor: 3.286, year: 2011
http://www.sciencedirect.com/science/article/pii/S0048969711007431

Thin black surface layers or black coloured gypsum crusts can be observed on stones of many buildings and sculptures around the world. The black weathered stone and mortar surface from selected sections of the Prague Castle were studied by microscopic methods, GC/MS and pyrolysis-GC/MS analysis. Microscopically, we found an authigenic gypsum formation with an outer layer of an admixture of fine grains of quartz, clay minerals, thermally altered clay minerals, fly ash, and carbonaceous particles of natural and anthropogenic origin particularly chars, cokes, soots. Noncarbonate C content ranged between 0.8% and 4.3%. Phtalates dominated in extracts from the samples and benzonitrile had the greatest abundance in the pyrolysis products. The identified organic particles and compounds are known to result from human activities. (C) 2011 Elsevier B.V. All rights reserved.
Permanent Link: http://hdl.handle.net/11104/0205702