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Light ageing dammar

FIGURE A3.32 Solubility of dark aged dammar. — indicates the approximate limit of solubility when exposed to light and oxidation equivalent to 100 years on a gallery wall (Feller and Curran, 1975 of A3.33). Data kindly provided by Dr Greg Smith and Classes of2009, 2010 and 2011 of the Art Conservation Department at Buffalo State College. [Pg.426]

Figure 5.7 GALDI mass spectra of mastic. Commercially available mastic (a) in an advanced state of oxidation as can be seen by comparison with really fresh mastic a few days after harvesting (b). As with dammar, oxidation and degradation progress quickly in both light and darkness. The same mastic as in (b) is depicted after natural ageing in the dark after 7 weeks (c), and in a window after 7 weeks (d) and 42 weeks (e)... Figure 5.7 GALDI mass spectra of mastic. Commercially available mastic (a) in an advanced state of oxidation as can be seen by comparison with really fresh mastic a few days after harvesting (b). As with dammar, oxidation and degradation progress quickly in both light and darkness. The same mastic as in (b) is depicted after natural ageing in the dark after 7 weeks (c), and in a window after 7 weeks (d) and 42 weeks (e)...
S. Zumbuhl, R. Knochenmuss, S. Wiilfert, F. Dubois, M.J. Dale, and R. Zenobi, A Graphite Assisted Laser Desorption/Ionisation Study of Light induced Aging in Triterpene Dammar and Mastic Varnishes, Anal. Chem., 70, 707 715 (1998). [Pg.160]

See other pages where Light ageing dammar is mentioned: [Pg.338]    [Pg.24]    [Pg.179]    [Pg.202]    [Pg.142]    [Pg.161]    [Pg.213]   
See also in sourсe #XX -- [ Pg.257 ]



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