JAIC 1996, Volume 35, Number 1, Article 2 (pp. 09 to 21)
JAIC online
Journal of the American Institute for Conservation
JAIC 1996, Volume 35, Number 1, Article 2 (pp. 09 to 21)

INVESTIGATION OF A SURFACE TARNISH FOUND ON 19TH-CENTURY DAGUERREOTYPES

LEE ANN DAFFNER, DAN KUSHEL, & JOHN M. MESSINGER



5 SOLVENT TESTS

A series of basic solvent tests were conducted on one of the plates exhibiting fluorescence. The spot tests were conducted in a fume hood under UVC illumination. The fluorescence was immediately eliminated by xylene and N,N-dimethyl formamide, and remained so after complete evaporation of the solvent. The fluorescence was not affected by water, ethanol, 1 M HCL, or ethylene diamine tetraacetic acid (EDTA) trisodium salt.


Copyright 1996 American Institute for Conservation of Historic and Artistic Works