Published in:
01-04-2011 | Original Article
Cyclododecane exposure in the field of conservation and restoration of art objects
Published in: International Archives of Occupational and Environmental Health | Issue 4/2011
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Purpose
Recent work practices in the conservation and restoration involve the use of cyclododecane (CDD, CAS 294-62-2) to protect fragile artifacts during their handling or transportation. Little is known about its toxicity, and no previous exposure has been reported. A short field investigation was conducted to characterize the exposure conditions to both CDD vapors and aerosols.
Methods
Measurements were conducted in the laboratory of conservation and restoration of the archeological service in Bern (Switzerland). Three indoor and four outdoor typical work situations, either during brush or spray gun applications, were investigated. Measurements were performed on charcoal adsorbent tube and analyzed by a gas chromatograph equipped with a flame ionization detector.
Results
Measurements have been conducted during both brush and spray gun applications. Indoor exposures were of 0.75–15.5 mg/m3, while outdoors exposures were 19.5–53.9 mg/m3. Exposures appear to be extremely localized due to both physicochemical properties and application methods of the CDD. Vapor exposure increases dramatically with the confinement of the workplace.
Conclusion
Preventive measures should be undertaken to limit as much as possible these exposures. Field work in confined areas (ditches, underground) is of particular concern. CDD-coated artifacts or materials should be stored in ventilated areas to avoid delayed exposures.