A performance comparison study of the sorptive building materials with MEMS-based formaldehyde gas sensor from the aspect of reduction efficiency of indoor formaldehyde concentration

The problem of fugitive pollutants arising from the extensive use of indoor building materials in air-conditioned buildings in Taiwan directly affects the indoor air quality. Thus, how to balance the building indoor “healthy air quality” has become an important issue. It also probes into the application of the Sorptive Building Materials (SBMs) in indoor space to adsorb the pollutants in the air (formaldehyde) by calculating “sorption flux per time per area”, “sorption efficiency” and “sorption equivalent per area”. According to the standard method of ISO 16000, this study conducted the building material fugitive and absorption experiments with MEMS-Based Formaldehyde Gas Sensor by testing with the building materials (0.099m3) environmental chamber (25°C, 50% RH, Loading Factor 0.4 m2/m3). The research results showed that the sorption equivalent per area of SBMs is also the most effective. If used, it can maintain indoor air quality.