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Decontamination and “deconsolidation” of historical wood preservatives and wood consolidants in cultural heritage

  • In the past, wood artifacts were treated with a variety of wood preservatives formulated on the basis of inorganic and organic biocides. Most of these biocides have a high human toxic potential and pollute the environment. Some of them even cause damage to the objects they were meant to preserve. This poses a considerable challenge to the handling, exhibition, storage and restoration of such wooden works of art. In addition, biocide-containing structural wood members in historic buildings pollute the indoor-air, and represent a permanent health risk. Wood artifacts previously damaged by organisms and subsequently preserved and consolidated with mixtures of vegetable oils and natural resins now show characteristics of renewed deterioration. An important condition for the re-treatment of such objects is the exact detection of the substances originally utilized for their conservation. Non-destructive and in situ-measurements have priority among the listed analytical methods. The various decontamination procedures currently used areIn the past, wood artifacts were treated with a variety of wood preservatives formulated on the basis of inorganic and organic biocides. Most of these biocides have a high human toxic potential and pollute the environment. Some of them even cause damage to the objects they were meant to preserve. This poses a considerable challenge to the handling, exhibition, storage and restoration of such wooden works of art. In addition, biocide-containing structural wood members in historic buildings pollute the indoor-air, and represent a permanent health risk. Wood artifacts previously damaged by organisms and subsequently preserved and consolidated with mixtures of vegetable oils and natural resins now show characteristics of renewed deterioration. An important condition for the re-treatment of such objects is the exact detection of the substances originally utilized for their conservation. Non-destructive and in situ-measurements have priority among the listed analytical methods. The various decontamination procedures currently used are classified in regard to their mode of operation. Preferred methods include mechanical cleaning, thermo desorption, washing with water and detoxicants, and leaching as well as extraction with liquid or supercritical carbon dioxide. The masking with various sealers to prevent biocide evaporation into the indoor-air is limited to application to structural wood members. Leaching of degraded natural consolidants in wood artifacts is currently undertaken in a testing plant.zeige mehrzeige weniger

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Metadaten
Verfasserangaben:Achim Unger
DOI:https://doi.org/10.1016/j.culher.2012.01.015
ISSN:1296-2074
Titel des übergeordneten Werkes (Englisch):Journal of Cultural Heritage
Dokumentart:Wissenschaftlicher Artikel
Sprache:Englisch
Datum der Veröffentlichung (online):16.03.2022
Jahr der Erstveröffentlichung:2012
Veröffentlichende Institution:Fachhochschule Potsdam
Datum der Freischaltung:16.03.2022
GND-Schlagwort:Holzgegenstand; Konservierungsstoff; Pestizid; Dekontamination; Kulturerbe
Jahrgang:13
Ausgabe / Heft:3 / Supplement
Erste Seite:196
Letzte Seite:202
Fachbereiche und Zentrale Einrichtungen:FB2 Stadt | Bau | Kultur / Konservierung und Restaurierung
DDC-Klassifikation:500 Naturwissenschaften und Mathematik / 540 Chemie
Lizenz (Deutsch):License LogoCreative Commons - CC BY-NC-SA - Namensnennung - Nicht kommerziell - Weitergabe unter gleichen Bedingungen 4.0 International
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