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Semi-volatile organic compounds (SVOC) are contained in building materials including plasticizers and flame retardants, and adverse effects for the human body have been are concerned. It is important to understand of SVOC behavior to reduce exposure risk. The principal aim of this study was to clarify the emission mechanism of DEHP from building materials which is a kind of SVOC. First for some PVC floor tile, emission rates by three methods   ) and by Micro chamber method were compared. Second experiment was investigated DEHP emission rates from cushion floor under varying air flow volume using micro chamber. In addition, the airflow characteristic of micro chamber was investigated using computational fluid dynamics. Micro chamber method can measure SVOC emission faster than other methods. DEHP emission rate is subject to the airflow velocity near the building-materials surface, the thickness of fluid film under steady state condition.

RESEARCH ON DEHP EMISSION UNDER VARYING AIR FLOW VOLUME USING MICRO CHAMBER METHOD