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Colorimetric analysis of two watercolours used in retouching
Análisis colorimétricos en dos acuarelas usadas en reintegración



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Bailao, Ana and San Andrés Moya, Margarita and Calvo Manuel, Ana (2014) Colorimetric analysis of two watercolours used in retouching. International Journal of Conservation Science IJCS, 5 (3). pp. 329-342. ISSN 2067-8223

[thumbnail of IJCS-14-30-Bailao, San Andrés, Calvo.pdf]

Official URL: http://www.ijcs.uaic.ro/


Prussia blue and phthalo blue have a particularly importance in retouching because they provided a considerable amount of green and they are also transparent, which will give strong clear greens when needed during the retouching practice. The objective of this experiment is to evaluate the colorimetric change of the two cited pigments, in watercolours, after being exposed to direct sunlight for one year, comparing the results with another two samples protected from solar radiation, and also analyse the spectral curves similarity between both. The pigments are of the brand Artist´s Watercolour of Winsor & Newton.
Colour variations were determined in the uniform colour space called CIELAB. The results show that phtalo is more stable than Prussian blue.

Resumen (otros idiomas)

Azul de Prusia y azul ftalo presentan una particular importancia en la reintegración porque suministran una considerable tonalidad de verdes y son también transparentes, por lo que aportan verdes claros cuando se necesitan en la práctica de la reintegración. El objetivo de esta experiencia es evaluar los cambios colorimétricos de los dos pigmentos citados, en acuarelas, después de haber estado expuestos a la luz directa del sol durante un año, comparando los resultados con otras muestras protegidas de la radiación solar, también analizar las curvas espectrales y las similaridades entre ambas. Los pigmentos son de la marca Artist´s Watercolour of Winsor & Newton.

Item Type:Article
Uncontrolled Keywords:Colorimetry; Prussia blue; Phthalo blue; Watercolours; Winsor & Newton; Retouchin
Palabras clave (otros idiomas):Colorimetría, Azul de Prusia, Azul ftalo, Acuarelas, Winsor& Newton, Reintegración
Subjects:Humanities > Fine Arts
Humanities > Fine Arts > Conservation and restoration
Humanities > Fine Arts > Painting
ID Code:29527
Deposited On:17 Apr 2015 11:35
Last Modified:17 Apr 2015 11:35

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