Predicting the Fading of Objects: Identification of Fugitive Colorants through Direct Nondestructive Lightfastness Measurements

Whitmore, Paul M.; Pan, Xun; Bailie, Catherine

doi:10.2307/3179999

Cited by 36 publications

(33 citation statements)

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“…The microfading device used in this study was designed and developed by researchers at the National Museum in Krakow and at the Faculty of Chemistry of the Jagiellonian University (Łojewski et al, 2011) and it is based on the original prototype designed by Whitmore et al (1999). This instrument consists of a high-power light source, a 0˚/45˚geometry optical setup (Fig.…”

Section: Microfading Spectrometermentioning

confidence: 99%

Documenting the light sensitivity of Spanish Levantine rock art paintings

Hoyo‐Meléndez

Lerma

López-Montalvo

et al. 2015

ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci.

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ABSTRACT:A case study to evaluate the use of microfading spectrometry (MFS) for the study of colored systems found in prehistoric rock art paintings was conducted in the Cova Remígia rock-shelter, Castellón (Spain). This rock shelter is part of the rock art sites of the Mediterranean basin on the Iberian Peninsula included in UNESCO's World Heritage List. Some of the paintings belonging to this group are exposed to environmental factors including natural daylight, wind and rain, depending on the time of the day and the season of the year. Therefore, their preservation is a major concern to stakeholders and researchers responsible for protecting and studying these prehistoric paintings. The experimental work in Cova Remigia focused on measuring the reflectance curves (400-700 nm) and determining the photostability of various areas containing red and black pigments on the rock art paintings. The preliminary results indicate that MFS is a suitable technique for studying the response to light of rock/pigment systems found in rock art sites. The advantages and limitations of the technique are discussed.

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Section: Microfading Spectrometermentioning

confidence: 99%

Documenting the light sensitivity of Spanish Levantine rock art paintings

Hoyo‐Meléndez

Lerma

López-Montalvo

et al. 2015

ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci.

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“…Figure 8 shows the total color change (ΔE) of the various paints in comparison to BWS 2 and 3 upon exposure to visible light. Any change faster than the fading curve of BWS 3 is considered fugitive [6] and careful consideration is required when planning exhibition lighting and duration. Other than the orange and yellow paints, all colors tested performed better than BWS 3 and did not show dramatic lightfastness issues.…”

Section: Microfade Testingmentioning

confidence: 99%

“…In situ accelerated lightfastness testing was achieved with a Newport-Oriel style microfadeometer previously described by Whitmore et al [6]. The xenon arc lamp source was filtered to emit only visible light in the wavelength range of 400-700 nm.…”

Section: Microfade Testing (Mft)mentioning

confidence: 99%

Characterization of Haku Maki prints from the “Poem” series using light-based techniques

2016

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Four brightly colored calligraphic prints from the "Poem" series (1970/71) by Japanese artist Haku Maki (1924Maki ( -2000 were examined using multiple light-based analytical techniques in an effort to address conservation concerns regarding these artworks. A distracting white haze on the surface of some of the prints was determined by light microscopy and infrared microanalysis to be fungal mycelium from an inactive mold infestation that occurred prior to the artwork's acquisition by the museum. Pigment analysis by Raman, X-ray fluorescence, and infrared microspectroscopies identified the artist's palette as containing common printing ink colors such as aniline black (PBk1), carbon black (PBk7), phthalocyanine blue (PB15), Prussian blue (PB27), ultramarine blue (PB29), molybdate orange (PR104), chrome yellow (PY34), barium yellow (PY31), viridian (PG17), barium sulphate (PW21), and synthetic organic red pigments (PR3, PR22, PR48:3). Although aniline black and molybdate orange are common industrial pigments, reference vibrational spectra to assist in their identification have not appeared previously in the conservation literature. Moreover, this investigation includes to the authors' knowledge the first published identification of these pigments in a work of fine art. Haku Maki's unique 'cement-on-woodblock' printing technique in combination with his vibrant palette creates dynamic, embossed effects in these prints. However, lightfastness testing using a microfade tester identified the potential for light-based damage to the artwork, in some instances showing poorer lightfastness for colors reported to be stable pigments and greater stability than anticipated for others. These analyses are the first objective study of this innovative artist's material choices, and they enhance our understanding of his printing technique while helping to determine the proper stewardship protocols to protect his artistic legacy.

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“…5-8 These initiatives have generated several related instrument designs with different optimisation parameters and efficiencies. 5, 6,8 Heritage institutions use a variety of light sourcesincandescent, halogen, (compact) fluorescent, light-emitting diode (LED), metal halide, and natural light -in the display of heritage objects, and the impact of light on objects during display is a major concern for them. 5, 7-10 Saunders and Kirby have reported differences in rates of fading, when different museum light sources are used during ageing tests of sacrificial materials, 9 highlighting the need to evaluate the effect of museum illuminants of specific heritage objects.…”

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confidence: 99%

Note: Light ageing with simultaneous colorimetry via fibre optics reflection spectrometry

Łojewski

Thomas

Gołąb

et al. 2011

Review of Scientific Instruments

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In this article, the design and characteristics of a micro-fadeometer is presented. The technique allows for a non-(micro-) destructive evaluation of the light fastness of colorants on various materials and can be used to directly assess valuable materials, such as heritage objects, and develop safer display strategies to promote their preservation. The presented instrument has several benefits over standard light ageing methods--low operating cost, non-damaging, real time measurement of induced changes for kinetics studies, and automated high throughput screening of materials. A selection of data is presented to demonstrate the flexibility of the presented instrument and illustrate how it can be used to evaluate museum lighting and oxygen-free display of heritage objects.

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Predicting the Fading of Objects: Identification of Fugitive Colorants through Direct Nondestructive Lightfastness Measurements

Cited by 36 publications

References 0 publications

Documenting the light sensitivity of Spanish Levantine rock art paintings

Documenting the light sensitivity of Spanish Levantine rock art paintings

Characterization of Haku Maki prints from the “Poem” series using light-based techniques

Note: Light ageing with simultaneous colorimetry via fibre optics reflection spectrometry

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