Measurement of volatile organic compounds emission factors from coating materials by use of a three liters chamber

A 20 liters chamber which is standardized in JIS A 1901:2003 "Small chamber method - Determination of the emission of volatile organic compounds and aldehydes for building products" has been popularly used for measurement of volatile organic compounds (VOC) emission factors from coating materials. A 3 liters chamber which was newly developed for measurement of VOC emission factors from coating materials was evaluated and compared with the 20 liters chamber in the study. Air tightness, recovery and mass transfer coefficient of the 3 liters chamber were evaluated in accordance with JIS A 1901:2003. Further, correlation between VOC emission factors obtained by the 20 liters chamber method and the 3 liters chamber method was examined through measurement of acrylic enamel paint and a textured coating material. The results can be summarized as follows; 1) Air tightness of the 3 liters chamber meets the requirement of ENV13419-1:1999 "Building products, Determination of the emission of volatile organic compounds - Part1: Emission test chamber method." 2) Recovery and mass transfer coefficient of the 3 liters chamber satisfy the requirements of JIS A 1901:2003. 3) VOC emission factors obtained show high correlation between the 20 liters chamber method and the 3 liters chamber method.