漆芸技法に用いられる金属への文化財燻蒸薬剤の残留影響評価―臭化メチル・酸化エチレン製剤の影響―

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  • Effect of a Fumigant on Metal Used in Urushi Art Techniques - The Case of Mixture Fumigant of Methyl Bromide and Ethylene Oxide -

説明

The production of methyl bromide, which has been used frequently for the fumigation of　cultural properties, was stopped at the end of 2004. However, it is necessary to evaluate the　effect caused by its use in past fumigations of cultural properties.　In this study, the effect of fumigation was revalued by the appearance of color change on　objects. Five kinds of metal samples －lead, tin, silver, copper, and solder－ were processed in　three ways each: simply rolled flat, processed to make a rock-like surface, and beaten with a　hammer. These samples were fumigated with a mixture of methyl bromide and ethylene oxide.　The change in the surface color of these samples was examined.　The results showed that there was a possibility of color change on metal surface by　exposure to fumigants.

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