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Red lead, a semiconductor pigment used by artists since antiquity, is known to undergo several discoloration phenomena. These transformations are either described as darkening of the pigment caused by the formation of either plattnerite (β‐PbO2) or galena (PbS) or as whitening by which red lead is converted into anglesite (PbSO4) or (hydro)cerussite (2 PbCO3⋅Pb(OH)2; PbCO3). X‐ray powder diffraction...
Mennige …︁ …︁, ein Pigment, das von Künstlern seit der Antike verwendet wird, verändert mit der Zeit seine Farbe. Durch röntgenographische Tomographieexperimente mit (Sub)Mikrometer‐Auflösung wurde die seltene Bleiverbindung Plumbonacrit (3 PbCO3⋅Pb(OH)2⋅Pb) in der inneren Struktur einer sehr kleinen Probe eines Gemäldes von Van Gogh identifiziert. In ihrer Zuschrift auf S. 3678 ff. beschreiben K...
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