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  1. 1 Ochrona Zabytków

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  1. 1 Szmit-Naud E.

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  1. 1 2000

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Zmiany wyglądu punktowań w malarstwie sztalugowym : bielenie powodowane przez niektóre białe pigmenty

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Szmit-Naud E.
Ochrona Zabytków
|
2000
|
issue 1
69-76
EN
The milkiness of retouched blank spaces in easel painting constitutes a highly visible and relatively frequently observed change, which disturbs the aesthetic reception of a given work. In many cases, responsibility for its appearance should be placed on white pigments with photocatalytic properties, used for retouching. The author examined more than ten cases of milkiness by resorting to fluorescence and X-ray diffraction. The findings point to the presence of photoactive pigments: zinc white — zinc oxide, and titanium white — anatase titanium dioxide. Some of the registered changes came into being in the course of merely several years. Suitable information about the pigment composition of material used for retouching could enable conservators to limit the risk of causing future changes consisting of milkiness. With this purpose in mind, the analysis encompassed up to twenty white paints and pigments applied in conservation retouches. Many of them, due to their pigment composition, could produce changes that assume the form of milkiness and chalking.
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