J.CAC VOLUME 23 (1998)
L’utilisation de la chromatographie en phase gazeuse couplée à la spectrométrie de masse à trappe d’ions pour la mise en évidence de colophane à l’état de trace
Determination of the presence of rosin in the supports of works of art on paper is very important for their conservation, in particular if an alkaline treatment is involved. This determination is impossible with classic methods if the samples are very small, especially in light of the fact that rosin represents only a small percentage of the total weight of the sample. A method has been developed using an ion trap mass spectrometer coupled to a gas chromatograph which allows for the identification of a few picograms of the acids characteristic of rosin.
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