ポリ塩化ビニル樹脂系建築材料から放散するフタル酸エステル類の定量分析

概要

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It has been pointed out that phthalic esters have possibility to be endocrine disrupters. In addition to possibility of endocrine disrupters, the indoor air concentration values for dibutyl phthalate (DBF) and dioctyl phthalate (DOP) should be controlled to be less than 220x10^<-6>g/m^3 and 120x10^<-6>g/m^3, respectively, according to the guideline proposed by Ministry of Health, Labor and Welfare. However, there are few available data on the emission rates of the phthalic esters from building materials. In this context, the phthalic esters emitted from wall papers and floor covering sheets made of polyvinyl chloride resin were quantitatively analyzed. The emission at 40℃ was too low to detect the phthalic esters. The emission rates of DOP and di-isononyl phthalate (DINP) from wall papers and floor covering sheets could be measured at 80℃. These data at 80℃ were converted to be from 1.4x10^<-6>g/(m^2・hour) to 5.3x10^<-6>g/(m^2・hour) at 28℃ by consulting with the literature. It is considered that there is little possibility to exceed the indoor air concentration values proposed by the Ministry with the estimated emission rates under normal conditions.
2003-11-30