Spara och bevara* bibliographic database

Loupa, G and Charpantidou, E and Karageorgos, E and Rapsomanikis, S (2007) The chemistry of gaseous acids in medieval churches in Cyprus. Atmospheric Environment, 41 (39). pp. 9018-9029. ISSN 13522310

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Indoor and outdoor concentrations of HCl, HNO3, HCOOH and CH3COOH were determined in two medieval churches in Cyprus, during July 2003 and March 2004. The high air exchange rate through the open windows and doors led to lower indoor, compared to outdoor, acid concentrations in July 2003. Indoor pollutant emissions and a low air exchange rate resulted in higher indoor compared to outdoors acid concentrations in both churches during March 2004. Indoor to outdoor inorganic acid ratios were higher than the corresponding indoor to outdoor organic acid ratios during July 2003, whilst the opposite trend was observed during March 2004. Direct acid emission from candle burning appears to play a major role in the observed indoor acid concentrations. Emissions of volatile organic compounds from other sources, like humans, cleaning products and incense, led also to formation or depletion of the gaseous acids via homogeneous photochemical, heterogeneous and dark reaction sequences. Chemical reaction pathways were extensively investigated and appear to explain the observed results. The apparent indoor acid deposition velocities ranged between 0.05 and 0.15 cm s−1.

Item Type: Article
Uncontrolled Keywords: Air pollution; Church; Conservation; Gases; Environmental monitoring
Subjects: English > Damage functions > Chemical damage
Depositing User: Anna Samuelsson
Date Deposited: 05 May 2008 08:28
Last Modified: 29 Dec 2016 13:49

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