TY - CONF A1 - Torge, Manfred A1 - Krug, Sonja A1 - Bücker, Michael A1 - Feldmann, Ines A1 - Scharf, Holger A1 - Witthuhn, Heike T1 - Investigation of mercury emissions of historic tin-mercury mirrors T2 - ART 2011 -10th International Conference on non-destructive investigations and microanalysis for the diagnostics and conservation of cultural and environmental heritage N2 - 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. T2 - ART 2011 -10th International Conference on non-destructive investigations and microanalysis for the diagnostics and conservation of cultural and environmental heritage CY - Florence, Italy DA - 13.04.2011 KW - Zinn-Amalgamspiegel KW - Quecksilber KW - Emission PY - 2011 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/23879 AN - OPUS4-23879 SP - 1 EP - 8 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany