conservation research at the swiss national museum · analytical strategy seminar, 26th november...
TRANSCRIPT
Conservation Research at
the Swiss National Museum
Tiziana Lombardo (Researcher, PhD)
Katharina Schmidt-Ott (Head KF, Conservator, PhD)
Vera Hubert (Researcher, PhD)
Erwin Hildbrand (Lab assistant)
Konservierungsforschung.
The Swiss National Museum, SNMhttps://www.nationalmuseum.ch/e
Landesmuseum, Zürich Château de Prangins, Nyon
Forum Schweizer Geschichte, Schwyz Sammlungszentrum, Affoltern am Albis
Analytical Strategy Seminar, 26th November 2019, ETH Zürich
Sammlungszentrum/Collection Centrehttps://www.nationalmuseum.ch/e/affoltern/
10.000 m2 of depot (3 stories)
850.000 objects
5.000 m2 for workshops
24 conservators
21 Admin /Logistic/Photogr.
Analytical Strategy Seminar, 26th November 2019, ETH Zürich
Katharina Schmidt-Ott (Head, Conservator, PhD) Tiziana Lombardo (Researcher, PhD)Vera Hubert (Researcher, PhD) Erwin Hildbrand (Lab assistant)
Conservation Research Lab
Analytical Strategy Seminar, 26th November 2019, ETH Zürich
Tasks• Material analysis
• Development-adaptation of conservation
treatments
• Preventive conservation
• Health and security
Target groupsConservators, curators, archaeologists,
historians.
Internal (SNM) or external (universities and
public cultural institutions)
Service- or project-base
Analytical Strategy Seminar, 26th November 2019, ETH Zürich
Material analysis
To answer questions about:
Characterisation, use, technology
Conservation state and history
Provenance
Dating
In which context:
Knowledge of objects
Conservation interventions
Exhibition catalogues
Projects
Analytical Strategy Seminar, 26th November 2019, ETH Zürich
Development of conservation
treatments
Conception of projects as well as analytical &
technical support for conservators or other
scientists
Examples:
MICMAC: use of bacteria and siderophore to
extract FeS-species from waterlogged wood
CHANGE: digital techniques to monitor glass
corrosion
Decontamination from Biocides using liquid
CO2
Analytical Strategy Seminar, 26th November 2019, ETH Zürich
Preventive conservation
Testing of materials for exhibitions,
transportation, storage and conservation
Developping corrosion monitoring tools
Involvement in issues related to light and
climate control
Mainly for conservators (SNM as external)
both as « service » or on project base.
Analytical Strategy Seminar, 26th November 2019, ETH Zürich
Challenges of our analytical approach
• NON DESTRUCTIVE
• or micro-invasive
• but still representative (!)
• Molecular & elemental analysis techniques
• If possible portable
Analytical Strategy Seminar, 26th November 2019, ETH Zürich
Examples: Medieval objects or Historicism copies?
lead-tin yellow (L)
cinnabar (C)
Analytical Strategy Seminar, 26th November 2019, ETH Zürich
Examples: Provenance of Neolitic bronze axes
Analytical Strategy Seminar, 26th November 2019, ETH Zürich
Example: Glass corrosion documentation, monitoring
and mitigation
Walczak et al., 2016
Analytical Strategy Seminar, 26th November 2019, ETH Zürich
Biocide contamination: detection & mitigation
• Assessment: marker elements (Cl, Pb, As, Hg, Cr, Br)
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Analytical Strategy Seminar, 26th November 2019, ETH Zürich
Biocide mitigation
PCPDDTPermethrineLindane
Objekt
Filter(variables Filtermedium)
Umlaufende Rohrleitung für Heizmedium
CO2-Destillation/ Abtrennung
CO2 flüssig
CO2
f lüssig
Flüssiges CO2
• Decontamination with liquid CO2
• Proof of concept on artificially contaminated materials
Lombardo et al., 2020
Analytical Strategy Seminar, 26th November 2019, ETH Zürich
Biocide mitigation
• Decontamination with liquid CO2 of museum objects
• Out of 9 objects tested positively for Cl
only in 4 biocides emissions (PCP, DDT,
Lindane, Clhropyrifos) were measured.
• Li-CO2 extraction was succesfull
Wörle et al., 2020
Analytical Strategy Seminar, 26th November 2019, ETH Zürich
Limitation
• Marker elements are not enough
Lang and Zimmer, 2016
Analytical Strategy Seminar, 26th November 2019, ETH Zürich
• Same limitation for heavy metal (Hg, As, Pb, Br, Cr…)
Lang and Zimmer, 2016
Analytical Strategy Seminar, 26th November 2019, ETH Zürich
Thank you for your attention!
Any question?
Analytical Strategy Seminar, 26th November 2019, ETH Zürich
Thank you for your attention!