PVC床材が室内のSVOC汚染に与える影響

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タイトル別名
  • THE EFFECTS OF SVOC CONTAMINATION ON INDOOR ENVIRONMENT WITH USED PVC SHEETS IN INDOOR
  • PVC ユカザイ ガ シツナイ ノ SVOC オセン ニ アタエル エイキョウ

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 In recent years, SVOC has a high interest as contaminants in house dust in indoor. Specifically, phthalates are more concentrated in house dust than indoor air. The children are higher risk with phthalate concentrated in house dust than adults. We had researched the concentration of SVOC in house dust and air as well as emission rate of SVOC from PVC sheets by using the micro chamber. But, we have not ever investigated that the phthalates contamination in house dust are whether in the substance emitted from PVC sheet to be used in the surveyed house. Therefore, this study was investigated the measurement of SVCO concentration in air and house dust in Korea and to measurement of SVOC emission rate from PVC sheets by using micro chamber.<br> As a result, from the air in surveyed houses are detected 2E1H, D6, BHT, DEP, C16, DBP and DEHP but were not detected TBP, TCEP, DBA, TPP and DOA. In this study, the concentration of DBP and DEHP are respectively 0.36-0.67, 0.13-0.56[μg/m3] in surveyed houses. From the house dusts in surveyed houses are detected 2E1H, DEP, C16, TCEP, DBP, TPP, DOA and DEHP. The detection frequency of 2E1H, DBP and DEHP are higher than the other analyzed substances. The average concentration of 2E1H and DBP are respectively 23, 53[μg/g], DEHP is 4225[μg/g] in house dust in the surveyed houses. By using micro chamber, we measured the emission rate of SVOC from PVC sheets that are used in surveyed houses. 2E1H, DEP, C16, DBP, DOA and DEHP were emitted from PVC sheet. 2E1H, DBP and DEHP are emitted from all measured PVC sheets. The emission rate of 2E1H and DBP are respectively 0.35-1.29, 0.12-1.52[μg/m2·h], DEHP is 0.72-14.21[μg/m2·h] from PVC sheets that are used the surveyed houses. On other hand, the D6, BHP, TBP, TCEP, DBA and TPP were not emitted from PVC sheets that are used surveyed houses. The contaminated D6, BHT, TBP, TCEP, DBA and TPP in air and house dusts were not associated with PVC sheets.<br> There is no correlation between the concentration of 2E1H, DBP and DEHP in air and the emission rate of 2E1H, DBP and DEHP from PVC sheets. But, in the case of DEHP concentration in house dust, there is correlation between the concentration of DEHP in house dust and the bleed-out rate of DEHP from PVC sheets that is used the surveyed houses.

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