Abstract
There are several methods for determining personal exposure to PM2.5. Among these methods, the gravimetric method that include collection of PM2.5 on the filter and measurement of the filter weight have the advantage of measuring weight of PM2.5 directly. We have developed a low-noise personal pump for collecting PM2.5, and found that this can be used even in the bedroom. Teflon coated glass fiber filters (T60A20, Pall Corp.) was used for collecting PM2.5. These filter was heated at 300°c for 6 hours prior to use, and put into a desiccator where relative humidity was kept at 50%. When the filter was PM2.5 weight can be measured accurately. This method can be applied to not only the personal exposure surveies of PM2.5 but also indoor/outdoor ones.
