JAIC 2004, Volume 43, Number 2, Article 3 (pp. 151 to 160)
JAIC online
Journal of the American Institute for Conservation
JAIC 2004, Volume 43, Number 2, Article 3 (pp. 151 to 160)

THE EFFECT OF SUPERCRITICAL CARBON DIOXIDE EXTRACTION ON COLOR RETENTION AND PESTICIDE REDUCTION OF WOODEN ARTIFACTS

SUNG MO KANG, ACHIM UNGER, & J.J. MORRELL



4 CONCLUSIONS

Supercritical carbon dioxide extraction removed an average 60% of the original DDT from panels coated with pigments used on wooden icons, with minimal impact on the color quality of the pigments. While further studies will be necessary to refine extraction conditions and identify pigment components that are most susceptible to extraction conditions, the results indicate that SCF extraction may represent a promising method for nondestructively remediating pesticide-contaminated wooden artifacts.


ACKNOWLEDGEMENTS

The authors wish to thank Hiltrud Fritsche, sculpture restorer in Berlin, for the preparation of the test specimens.


Copyright 2004 American Institution for Conservation of Historic & Artistic Works