Ornaments in radiation treatment of cultural heritage: Color and UV–vis spectral changes in irradiated nacres

Marušić, Katarina; Pucić, Irina; Desnica, Vladan

doi:10.1016/j.radphyschem.2015.11.028

Cited by 8 publications

(8 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Moreover, although no peaks were formed at 750 nm after irradiation, the reflectance of the two lead white samples at 750 nm did not show the same decay as the rest of the visible band. Such an observation further confirms a slight increase in a value and a minor reddening of the two irradiated lead-containing samples [30].…”

Section: Colorimetric Analysissupporting

confidence: 75%

“…For calcium carbonate from Baishi and Aladdin, the new signal peak at 400~480 nm after irradiation shows the blueish color shift of the sample, which also matches the decrease in b value [30]. In addition, the unique performance of the two lead-containing samples at 750 nm also appears for the two samples containing calcium carbonate, which corresponds to a slight reddening of the color and an elevated a value [30].…”

Section: Colorimetric Analysismentioning

confidence: 56%

“…means a significant yellowing of the samples after irradiation, which corresponds In the UV-vis diffuse reflectance spectra of lead white from Acmec and Macklin, a distinct signal peak can be observed in the yellow region of 570~600 nm in Figure 3. This means a significant yellowing of the samples after irradiation, which corresponds to an increase in the b value of the samples during the color difference measurement [30]. Moreover, although no peaks were formed at 750 nm after irradiation, the reflectance of the two lead white samples at 750 nm did not show the same decay as the rest of the visible band.…”

Section: Colorimetric Analysismentioning

confidence: 97%

See 2 more Smart Citations

Study on the Influence of Electron Beam Radiation Sterilization Method on Chinese Mural Pigment

et al. 2023

View full text Add to dashboard Cite

Murals are one of the important cultural heritages of mankind. The microbial control of murals is an important subject in mural painting conservation. In recent years, electron beam radiation sterilization has attracted more and more attention in the field of cultural relic protection. Murals are immovable cultural relics, so conventional electron beam irradiation equipment can not be used. However, the development of small mobile electron beam irradiation equipment shows the potential of radiation’s application in the sterilization protection of immovable cultural relics such as murals. A feasibility study of radiation sterilization in mural paintings is needed to investigate the effect of sterilization and the influence of sterilization dose on the stability of mural painting pigments and bonding materials. In this paper, the radiation effects of typical bacteria in tomb murals and mineral pigment powder in ancient Chinese paintings were studied in a laboratory. Firstly, aeromonas hydrophila (Aer.h) and penicillium flavigenum (PNC) were selected as representative strains to determine the appropriate sterilization dose for murals. Then, the effects of radiation on seven kinds of ancient Chinese mineral pigments and white calcium carbonate in the ground layer were verified. The results are as follows: the radiation dose of 10 kGy can effectively remove the two typical strains. This sterilization dose will cause a color difference in calcium carbonate and lead white, while other color pigments are essentially stable. Based on the color difference and UV-vis intensities of the four white carbonate samples, the color change in two of them increased with increasing the dose up to 30 kGy, after which signs of saturation began to appear. X-ray diffraction (XRD), Raman spectra, X-ray photoelectron spectroscopy (XPS) and X-ray absorption near edge structure (XANES) spectra showed that the chemical structure of the samples did not change after irradiation. The formation of free radicals in treated samples was confirmed using an electron paramagnetic resonance (EPR) spectrum test. According to all characterization results, the color difference between the four white carbonate samples may be due to the combination of unpaired electrons and defects in the process of electron beam irradiation to form color centers. After forming the color center, the light absorption of the four samples changed. This is a reversible change, but the samples will take a long time to return to their original state. This study focuses on the influence of electron beam radiation on pigment composition, which is a preliminary exploration of whether radiation sterilization can be applied to the protection of ancient Chinese mural paintings, and the experimental results can provide basic data for later application.

show abstract

Section: Colorimetric Analysissupporting

confidence: 75%

Section: Colorimetric Analysismentioning

confidence: 56%

Section: Colorimetric Analysismentioning

confidence: 97%

See 1 more Smart Citation

Study on the Influence of Electron Beam Radiation Sterilization Method on Chinese Mural Pigment

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Los espectros de reflectancia difusa representan la radiación reflejada a distintas longitudes de onda; su forma o perfil es característico de cada color. Además, los espectros de reflectancia pueden convertirse a coordenadas cromáticas como las de CIELAB a través de funciones matemáticas predeterminadas, para la caracterización de su color (Marušić et al, 2016).…”

Section: Caracterización Del Color De Hilos De Lanaunclassified

Caracterización del color en lana teñida para la manufactura de sarapes de Saltillo

Herrera

Velázquez-Manzanares²,

Vázquez³

et al. 2022

Herencia

View full text Add to dashboard Cite

Recibido: 07 de diciembre de 2021.Aprobado: 07 de marzo de 2022. En este trabajo, se caracterizó el color de hilos de lana teñida artesanalmente en dos periodos (campañas 2014 y 2015) utilizados en la confección de sarapes de Saltillo, en México. El análisis espectral se hizo por Espectrofotometría UV-Vis de Reflectancia Difusa; el análisis cromático se realizó en el espacio de color CIELAB, utilizando el iluminante estándar D65 y el observador a 10 grados, a partir de los espectros de reflectancia. Una vez identificadas las coordenadas cromáticas, se convirtieron a los colores correspondientes mediante la ayuda de software. Finalmente, se calcularon los valores de ∆ECMC para reconocer las variaciones de color entre hilos del mismo tono, con distintas luminosidades y saturaciones, encontrando que en algunos casos los valores registrados correspondieron a variaciones apenas perceptibles por el ojo humano, lo cual es un parámetro de calidad en la confección de estos textiles, emblemáticos de la cultura mexicana. Con ello, se busca registrar las características colorimétricas típicas de estas artesanías, con el fin de coadyuvar a su protección intelectual y preservación.

show abstract

“…Due to the novelty of the gamma irradiation treatment but also to the complexity and diversity of the constituents of cultural heritage items, the question that always remains to be answered is as follows: “Does the gamma radiation induces a supplementary degradation in the material?”. The subject is debated for numerous and diverse objects of wood [ 3 ], textile [ 4 , 5 , 6 , 7 ], paper [ 2 , 4 , 8 , 9 , 10 , 11 , 12 , 13 ], which are ornamented [ 14 ] or with polychromies [ 15 , 16 , 17 , 18 ]. It is also known that interventions for saving cultural heritage artefacts should be reversible.…”

Section: Introductionmentioning

confidence: 99%

Physical Chemical Investigation of Gamma-Irradiated Parchment for Preservation of Cultural Heritage

et al. 2023

View full text Add to dashboard Cite

The historical artefacts of parchment are prone to degradation if the storage conditions are improper due to the collagen structure having a limited stability under physical, chemical, and biological agent attacks. The parchment structure is difficult to characterize due to the variety of manufacturing traditions (eastern/western), intrinsic variability of skins (i.e., species, breeding variation, living conditions, effects of pathologies, etc.), biodeterioration, and aging, and the main concern in its analysis is its uniformity. The deterioration of parchment collagen produces a rather stiff or in some circumstances, a relaxed structure. Any intervention or treatment of unique, very precious cultural heritage artefacts must not negatively influence the properties of the component materials. Gamma irradiation is a relatively new technique of bioremediation. Data on the leather properties pre- and post-ionizing radiation bioremediation treatments are few in the literature. Fewer data are available on the historical leather and parchment physical chemical characteristics after ionizing gamma irradiation. This research had two main objectives: (i) the characterization of the parchment structure’s uniformity across the analyzed areas and its mechanical properties, i.e., tensile stress by mechanical tests and ATR-FTIR spectroscopy; and (ii) to establish parchment tolerance when exposed to ionizing gamma radiation as a pre-requisite for cultural heritage preservation irradiation treatment. It was found that the mechanical tests and ATR-FTIR spectroscopy may identify changes in the parchment’s irradiated structure and that the preservation of cultural heritage parchment artefacts may be performed at maximum 15 kGy gamma irradiation dose.

show abstract

Ornaments in radiation treatment of cultural heritage: Color and UV–vis spectral changes in irradiated nacres

Cited by 8 publications

References 20 publications

Study on the Influence of Electron Beam Radiation Sterilization Method on Chinese Mural Pigment

Study on the Influence of Electron Beam Radiation Sterilization Method on Chinese Mural Pigment

Caracterización del color en lana teñida para la manufactura de sarapes de Saltillo

Physical Chemical Investigation of Gamma-Irradiated Parchment for Preservation of Cultural Heritage

Contact Info

Product

Resources

About