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Abstract

Laser irradiation may alter the colour of certain pigments used in artwork. Owing to the increasing use of lasers in artwork conservation this problem becomes extremely crucial, especially in the case of a polychromy covered by environmental encrustation. X-ray diffraction analysis and optical microscopy were used to study the crystalline structure of selected irradiated pigments in order to identify the changes that take place upon laser irradiation. Two representative pigments were studied, cinnabar (HgS) and lead white (Pb(OH)₂ .2PbCO₃). The results revealed a change in the crystalline phase or chemical composition, respectively, which can be barely detected owing to its superficial character, which is of a nanometre scale.

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References

CENNINO cennini : ‘II libro dell’ Arte’, in ‘The craftsman's handbook’, (ed./trans. Thompson

D. V.

); 1962, New York, NY, Dover.

ANDERSON

R. R.

, GERONEMUS

, KILMER

S. L.

, FARINELLI

, and FITZPATRICK

R. E.

: Arch. Dermatology, 1993, 129, 1010–1014.

weeks

: Studies in Conservation, 1998, 43, 101–108.

CALLEDE

, HUGON

, and ORIAL

: Report 851 C, Laboratoire de Recherche des Monuments Historiques, Paris, 1992.

asmus

J. F.

: IEEE Circuits and Devices Magazine, 1986, 2, 6–15.

KÖNIG

and KAUTEK

(eds.): ‘Restauratorenblatter, Sonderband-Lacona I, Lasers in the conservation of artworks‘, 1997, Vienna, Verlag Mayer & Comp.

COOPER

(ed.): ‘Laser cleaning in conservation: an introduction’, 1998, Oxford, Butterworth-Heinemann.

GEORGIOU

, ZAFIROPULOS

, ANGLOS

, BALAS

, TORNARI

, and fotakis

: Appl. Surf. Sci, 1998, 127–129, 738–745.

gettens

R. J.

, feller

R. L.

, and chase

W. T.

: Studies in Conservation, 1972, 17, 45–69.

10.

GRANGER

: ‘Vitruvius on architecture’, Book 7, Chap. 9; 1970, Harvard University Press.

11.

DANIELS

: ‘The blackening of vermilion by light’, in ‘Recent advances in the conservation and analysis of artifacts’, 280–282; 1987, London, Summer Schools Press.

12.

rasi

and scott

: Studies in Conservation, 1980, 25, 145–156.

13.

gettens

R. J.

, kühn

, and chase

w. T.

: Studies in Conservation, 1967, 12, 125–139.

14.

giovannoni

, matteini

, and moles

: Studies in Conservation, 1990, 35, 21–25.

15.

roller

, leitner

, and paschinger

: Studies in Conservation, 1990, 35, 15–20.

16.

petushkova

J. p.

and lyalikova

n. n.

: Studies in Conservation, 1986, 31, 66–68.

17.

rickerby

: The Conservator, 1991, 15, 39–44.

18.

LUK'YANCHUK

B. S.

and ZAFIROPULOS

: ‘The model for discoloration effect in pigments at laser cleaning of artworks by laser ablation’, in Proc. 2nd Int. Symp. on Laser Precision Microfabrication, 16–18 May 2001, Singapore, Society for Optical Engineering.

Discoloration of Pigments Induced by Laser Irradiation

Abstract

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References