Evaluating Phthalate Contaminant Migration Using Thermal Desorption⁻Gas Chromatography⁻Mass Spectrometry (TD⁻GC⁻MS).

ABSTRACT: This study describes a methodology for evaluating regulatory levels of phthalate contamination. By collecting experimental data on short-term phthalate migration using thermal desorption-gas chromatography-mass spectrometry (TD-GC-MS), the migration of di(2-ethylhexyl) phthalate (DEHP) from polyvinyl chloride (PVC) to polyethylene (PE) was found to be expressed by the Fickian approximation model, which was originally proposed for solid (PVC)/liquid (solvent) migration of phthalates. Consequently, good data correlation was obtained using the Fickian approximation model with a diffusion coefficient of 4.2 × 10-12 cm²/s for solid (PVC)/ solid (PE) migration of DEHP at 25 °C. Results showed that temporary contact with plasticized polymers under a normal, foreseeable condition may not pose an i

SUBMITTER: Ouchi Y 

PROVIDER: S-EPMC6523191 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature