Dosimetry of paintings: determination of the degree of chemical change in museum exposed test paintings (azurite tempera) by thermal and spectroscopic analysis

Odlyha, Marianne; Cohen, Neil S.; Foster, G. M.; West, R. H.

doi:10.1016/s0040-6031(00)00613-4

Cited by 31 publications

(29 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It appears to be stable to light and atmosphere, and shows good performances both in oil and tempera mediums [111,112], although its poor hiding power in oil is reported in literature [113]. Degradation of azurite in frescoes seems related to pH and grain size [91,114].…”

Section: Azurite (2cuco 3 ·Cu(oh) 2 Blue)mentioning

confidence: 99%

“…Degradation of azurite in frescoes seems related to pH and grain size [91,114]. Azurite degrades to green compounds: malachite (CuCO 3 ·Cu(OH) 2 ) and paratacamite/atacamite (Cu 2 Cl(OH) 3 ) are some examples [28,64,111,112,[115][116][117][118]. Humidity and chloride ions from various sources cause the formation of black copper oxides (CuO) and green chlorides (nantokite CuCl, paratacamite/atacamite or botallackite Cu 2 Cl(OH) 3 [103,116,[118][119][120][121]).…”

Section: Azurite (2cuco 3 ·Cu(oh) 2 Blue)mentioning

confidence: 99%

See 1 more Smart Citation

On the stability of mediaeval inorganic pigments: a literature review of the effect of climate, material selection, biological activity, analysis and conservation treatments

2017

View full text Add to dashboard Cite

This review is to be considered part of the development of the MEMORI dosimeter, to evaluate the impact of climate (relative humidity, temperature, illumination, etc., including volatile organic compounds) on moveable objects. In the framework of the MEMORI project, Ghent University was given the task to assess pigment degradation upon acetic acid exposure, and to collect information on pigments' stability. Moreover, to obtain a wider knowledge on the stability of common pigments, the effect of a variety of parameters was reviewed from literature. Discolouration and degradation of pigments significantly alter the legibility of polychrome works of art, so that the development of monitoring methods to ensure the preservation of cultural heritage objects is of primary importance.

show abstract

Section: Azurite (2cuco 3 ·Cu(oh) 2 Blue)mentioning

confidence: 99%

Section: Azurite (2cuco 3 ·Cu(oh) 2 Blue)mentioning

confidence: 99%

On the stability of mediaeval inorganic pigments: a literature review of the effect of climate, material selection, biological activity, analysis and conservation treatments

2017

View full text Add to dashboard Cite

show abstract

“…On the other hand, the TG thermogram of this sample showed that the decomposition of the compound started at about 230ºC and the final stages of the decomposition were not complete until about 330ºC. The TG curve indicates only one step (with 27% mass loss) for the process of thermal decomposition [21,25,26].…”

Section: Resultsmentioning

confidence: 99%

“…Also, some reports could be found on its thermal characterization [21][22]. But there is no report on the synthesis and thermal behaviour of nano-powder of basic copper carbonate.…”

Section: Introductionmentioning

confidence: 99%

Electrosynthesis and thermal characterization of basic copper carbonate nanoparticles

2009

View full text Add to dashboard Cite

Abstract:The present study concerns the electrochemical synthesis of basic copper carbonate nanoparticles by oxidation of metallic copper on the anode in an aqueous bicarbonate solution. This simple and one-step preparation can be considered as green synthesis. The scanning electron microscopy (SEM) analysis indicates that average particle size of the product is in the range of about 70 nm.On the other hand, basic copper carbonate micro-powder has been prepared, by mixing solutions of copper(ΙΙ) sulphate and sodium bicarbonate. The SEM analysis showed that the size of particles prepared in the same way is in the range of about 1 µm. In another part of this study, the thermal decomposition of micro and nanoparticles of copper carbonate produced by various methods was studied in air using TG-DTA techniques. The results of thermal study show that the decomposition of both samples occurs in single step. Also, the TG-DTA analysis of the nanoparticles indicates that the main thermal degradation occurs in the temperature range of 245 -315ºC. However, microparticles of Cu(OH) 2 •CuCO 3 decomposed endothermally in the temperature range of 230 -330ºC.© Versita Warsaw and Springer-Verlag Berlin Heidelberg.

show abstract

“…1,2 A monitoring programme is being developed to assist art galleries and museums to determine the conditions under which deterioration can occur and hence make corrective actions prior to major damage occurring. This work is part of the surface chemical characterization required to validate the monitoring processes used.…”

Section: Introductionmentioning

confidence: 99%

Monitoring the environmental degradation of paint dosimeters used to assess risk for fine art paintings on display by XPS

West¹,

Odlyha

Pratt

et al. 2004

Surface & Interface Analysis

View full text Add to dashboard Cite

Degradation mechanisms due to the effect of environmental pollutants on ingredients used in cultural objects such as fine art paint media have been investigated by surface analysis and other methods. Painters have used proteinaceous materials such as egg tempera and resinous additives, for example triterpenoid mastic, for many centuries. These paint components degrade by different mechanisms under the influence of atmospheric pollutants such as nitrogen dioxide. In this study, thin layers of egg tempera and mastic resin layers on quartz crystal microbalances (QCM) have been exposed to nitrogen dioxide at up to 100 ppm for 6 h. Surface characterization before and after exposure has been undertaken by monochromatized Al K a XPS.Before exposure, egg tempera possesses a surface rich in proteins and phosphatidyl dicholine which forms part of its lipid structure. Unexposed mastic resin coating is chemically less complex than the egg coating. Exposure of egg tempera to nitrogen dioxide causes a reduction in the surface concentration of phosphatidyl dicholine and an increase in fatty acid components at the surface. Exposure of mastic resin to nitrogen dioxide increases carbonyl/hydroxyl surface concentrations. Shifts in the QCM resonance frequencies are correlated with the hydrocarbon content of the coating for a fixed exposure to nitrogen dioxide.

show abstract

Dosimetry of paintings: determination of the degree of chemical change in museum exposed test paintings (azurite tempera) by thermal and spectroscopic analysis

Cited by 31 publications

References 9 publications

On the stability of mediaeval inorganic pigments: a literature review of the effect of climate, material selection, biological activity, analysis and conservation treatments

On the stability of mediaeval inorganic pigments: a literature review of the effect of climate, material selection, biological activity, analysis and conservation treatments

Electrosynthesis and thermal characterization of basic copper carbonate nanoparticles

Monitoring the environmental degradation of paint dosimeters used to assess risk for fine art paintings on display by XPS

Contact Info

Product

Resources

About