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KMID : 0382420020280040027
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Korean Journal of Environmental Health Society
2002 Volume.28 No. 4 p.27 ~ p.30
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Determination of Methyl Bromide Used for the Preservation of Cultural Materials from Insects.
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Lee GS
Shin US/Shin HS
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Abstract
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A thermal desorption-gas chromatography/mass spectrometric method was developed for the determination of methyl bromide in fumes formed during preservation of cultural materials from insects. Methyl bromide in fumes was collected by drawing 10 l of air through the adsorbent tube filled with a solid adsorbent (Chromosorb). The air samples were analyzed by using a special thermal desorption device and GC/MS determination. The recovery of methyl bromide by air sampling was 88% and the detection limit of the assay was 0.1 pptv based upon assayed air of 10 l. The method was applied to the determination of fumed methyl bromide used for the preservation of papers in al library. The mean concentration of methyl bromide determined in a library was 280.2±25.4 pptv
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