A study on the UV Fluorescence in Zinc Oxide Watercolour Paints

Johnson, Vanessa, Theodorakopoulos, Charis, Perry, Justin and Colbourne, Jane (2016) A study on the UV Fluorescence in Zinc Oxide Watercolour Paints. In: ICON Conference 2016 Turn and Face the Change: Conservation in the 21st Century, 15-17 June 2016, Birmingham.

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Abstract

Artworks containing zinc oxide pigments typically experience degradation related to the material’s photocatalytic properties, resulting in metal soap formation in oil paintings and hydrogen peroxide formation and efflorescence in works of art on paper. Zinc oxide pigments are also characterised by varied UV fluorescence, which is linked to differences in production and degradation.
We believe that the unique UV fluorescence variation of zinc oxide pigments can be employed to develop a method to glean information from watercolours regarding the pigment’s origin, composition, and photocatalytic behaviour.
Work is underway to study representative ZnO watercolour pigments manufactured by a range of traditional and contemporary methods and processed according to historical recipes. The study extends to accelerated aging by light cycles and then monitoring degradation and UV fluorescence with a range of analytical tools such as multispectral imaging, UV/VIS and fluorescence spectrophotometry as well as crystallography. Preliminary findings will be presented.

Item Type: Conference or Workshop Item (Paper)
Subjects: F100 Chemistry
H800 Chemical, Process and Energy Engineering
J100 Minerals Technology
W100 Fine Art
Department: Faculties > Arts, Design and Social Sciences > School of Arts and Social Sciences > Arts
Related URLs:
Depositing User: Charis Theodorakopoulos
Date Deposited: 10 Feb 2016 09:06
Last Modified: 31 Aug 2016 15:23
URI: http://nrl.northumbria.ac.uk/id/eprint/25930

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