A method for rapidly measuring air-cloth partition coefficients for SVOCs

摘要

In this research, we demonstrated that the partition coefficient can be measured very rapidly using the headspace analysis of vials containing cloth dosed with a known mass of the two SVOC's considered in this study, diethyl phthalate (DEP) and di-n-butyl phthalate (DnBP). Since the volume of headspace air is small, the total mass required to transfer from cloth to air is small and also the time required is very short (few minutes). To demonstrate the method, we measured partition coefficients for the two phthalate esters, DEP and DnBP, and jean. We found K_(cloth-air) ≌ (3.9 ± 0.9) × 10~5 (μg/m~3)/(μg/m~3) for DEP and K_(cloth-air) ≌ (36 ± 9) × 10~5 (μg/m~3)/(μg/m~3) for DnBP which compares favourably with previously published results (Morrison et al. 2015).