Dear Sir, concerning your phthalate analysis, PM2.5 low volume samplers are similar to the PM10 high volume samplers in that they also have a size selective inlet, a filter, and means of pulling air through the system; however, the PM2.5 samplers have same unique characteristics. First, the use of PM10 inlet to remove all the larger particulates followed by a PM2.5 selective inlet exclude the particulates greater in diameter than 2.5μ . For more information, please visit the following links:
thanks for the answers! I'm more worried about the contamination from other sources, as phtalates are used nowadays almost everywhere. I'm interested to assess the part of waste burning aerosol.