Bommel.etal 2004

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Maarten van Bommel¹, Lorraine Gibson², Simon Watts³, Velichka Kontozova⁴, Lieve Halsberghe⁵

1: Netherlands Institute for Cultural Heritage (ICN), PO Box 76709, 1070 KA Amsterdam, The Netherlands
2: University of Strathclyde, Department of Pure and Applied Science, 295 Cathedral Street, Glasgow G1 1XL, Scotland
3: School of Biological and Molecular Sciences, Oxford Brookes University, Headington, Oxford OX3 0BP, United Kingdom
4: University of Antwerp, Department of Chemistry, Universiteitsplein 1, B-2610 Antwerp, Belgium
5: Private ceramics conservator, Luxemburg

A comparison of diffusion tube determinations of formic and acetic acid concentrations in air- In: Padova 2004

Abstract

After inconsistent results of air concentration measurements of volatile organic acids in display cases at the Museum of London (UK) and in the City Museum of Kortrijk (Belgium), a comparison of methods was carried out amongst the institutions most actively involved in these determinations. Each laboratory had its samplers exposed to known air concentrations of formic and acetic acid in the calibrated exposure chamber at ICN and in three display cases at the City Museum of Kortrijk. After exposure the tubes were all returned to their origin and analysed. Comparison of the results shows that each laboratory is rather consistent but between laboratories numbers can differ with a factor 2.

Volltext

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