Remaining Solvents in Dry Cleaned Over Clothes

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  • ドライクリーニング処理後衣類からの残留溶剤について
  • ドライクリーニング ショリ ゴ イルイ カラ ノ ザンリュウ ヨウザイ ニ ツイテ

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We examined remaining solvents in dry cleaned trousers to estimate the magnitude of environmental pollution. A cleaning solvent of petroleum hydrocarbon was analyzed by means of capillary column mass spectrum gas chromatography. Principal ingredients were identified to be nonane, decane and undecane. The same main components were detected in dry cleaned trousers. Total amounts of evaporated vapor from a pair of trousers (480g) in 5 days after dry cleaning were nonane (0.73mg), decane (1.53mg) and undecane (1.09mg). The levels on the fifth day were 5% (nonane), 18% (decane) and 32% (undecane) of the first day's concentration, respectively. The half times of the remaining solvents were 1.0 day (nonane), 1.7 days (decane) and 2.7 days (undecane), respectively.

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