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:

http://digitalcommons.unl.edu/cgi/viewcontent.cgi?article=2398&context=usdaarsfacpub

http://nepis.epa.gov/Adobe/PDF/30003X6E.PDF

I think it will be helpful.

Hi,

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.