Total electron yield (TEY) detection mode Cr K-edge XANES spectroscopy as a direct method to probe the composition of the surface of darkened chrome yellow (PbCr1-xSxO4) and potassium chromate paints

Letizia Monico,Francesco d'Acapito,Marine Cotte,Koen Janssens,Aldo Romani, Giulia Ricci,Costanza Miliani,Laura Cartechini

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms（2023）

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摘要

The darkening of chromate-pigments, including chrome yellows (PbCr1-xSxO4), is a surface phenomenon affectinglate 19th-early 20thc. paintings, such as those by Van Gogh. Exploring analytical strategies that contribute to a deep understanding of darkening is therefore significant for the long-term conservation of unique masterpieces.

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关键词

Synchrotron radiation, X-rays, XANES, Lead chromate, Cultural heritage, Chromium, Degradation, Art conservation

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