Investigation of mercury emissions of historic tin-mercury-mirrors
- With the implementation of glass casting in France in the second half of the 17th century, larger mirrors could be produced. So-called tin-mercury mirrors were made by coating glass with tin amalgam. Today, many historical mirrors are partly damaged, the image quality is compromised, and the material integrity of the mirror is threatened. The transformation from tin into an oxide starts at the surface of the amalgam and proceeds down to the glass surface. The mercury dissolves as a liquid or gaseous phase. The amalgam layer is destroyed, so that conservation is necessary. Conservators must follow strict safety precautions while handling amalgam mirrors because of possible mercury emissions and corrosion of the amalgam, during which elemental mercury accumulates near the mirror frame in droplets and is emitted into the air. In a research project, the quantity of the mercury emissions from historical mirrors was examined and a technique to decrease these emissions was developed.
Autor*innen: | Manfred Torge, Sonja Krug, Michael Bücker, Ines FeldmannORCiD, Holger Scharf, Heike Witthuhn |
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Dokumenttyp: | Zeitschriftenartikel |
Veröffentlichungsform: | Graue Literatur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | The e-journal of nondestructive testing & ultrasonics |
Jahr der Erstveröffentlichung: | 2011 |
Verlag: | NDT.net |
Verlagsort: | Kirchwald |
Jahrgang/Band: | 16 |
Ausgabe/Heft: | 10 |
Aufsatznummer: | 11425 |
Erste Seite: | 1 |
Letzte Seite: | 8 |
Freie Schlagwörter: | Emission; Quecksilber; Zinn-Amalgamspiegel |
Veranstaltung: | International Conference on Non-destructive Investigations and Microanalysis for the Diagnostics and Conservation of Cultural and Environmental Heritage (ART 2011) |
Veranstaltungsort: | Florence, Italy |
Beginndatum der Veranstaltung: | 13.04.2011 |
Enddatum der Veranstaltung: | 15.04.2011 |
URL: | https://www.ndt.net/search/docs.php3?id=11425 |
ISSN: | 1435-4934 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 19.02.2016 |
Referierte Publikation: | Nein |