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Galán, Rocío Bruquetas

doi:10.37558/gec.v3i0.138

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2017

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“…(5) Regarding the high amount of calcite sometimes mixed with the lead white (20 wt % CaCO 3 corresponds to 40% of the pigment volume), it is possible to deem that such pigments were of lower quality, as attested by numerous historical sources. , The fact that most samples from the 19th century contained calcite mixed with lead white is also in agreement with sources: the adjunction of this extender was frequent at those times, when the production of the lead white pigment could almost be qualified as industrial.…”

Section: Resultsmentioning

confidence: 67%

Synchrotron-Based High Angle Resolution and High Lateral Resolution X-ray Diffraction: Revealing Lead White Pigment Qualities in Old Masters Paintings

et al. 2017

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Microsamples collected on 27 major paintings by Old European Masters dating from the 14th to the late 19th centuries were analyzed using synchrotron-based X-ray diffraction. Two complementary analytical configurations were used at beamlines ID22 (high angle resolution) and ID21 (high lateral resolution), in order to highlight markers of the different grades of the lead white pigments (mixture of cerussite PbCO and hydrocerussite Pb(CO)(OH)). Rietveld analysis and crystalline phases mapping at the microscale revealed the composition and microstructure of the pigments, shedding light on the preparation recipes and pigment choices of the artists through History.

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Section: Resultsmentioning

confidence: 67%