Jump to main content.

Contact Us

Health & Environmental Research Online (HERO)

You are here: EPA Home Research NCEA HERO Evaluation of an annular denuder tubes for atmospheric PAH partitioning studies--1: evaluation of the trapping efficiency of gaseous PAHS

Please wait while we submit your request.
This may take several minutes...


098521 
Journal Article 
Evaluation of an annular denuder tubes for atmospheric PAH partitioning studies--1: evaluation of the trapping efficiency of gaseous PAHS 
Temime-Roussel, B; Monod, A; Massiani, C; Wortham, H 
2004 
Atmospheric Environment
ISSN: 1352-2310 
38 
1913-1924 
This paper is an evaluation of the gas phase collection efficiency of a commercially available annular denuder sampler used to collect gas and particle phase semivolatile organic compounds. Laboratory and field experiments were carried out to determine the gas phase collection efficiency using naphthalene as reference compound. Laboratory tests were performed to study the influence of environmental conditions (temperature, relative humidity and gas phase concentration) and sampling conditions (sampling flow rate, and sampling duration) on the collection efficiency. During laboratory experiments, the collection efficiency of the gas phase was measured using a dynamic gas generator. It was above 90% for a range of experimental conditions covering: temperature from 9°C to 39°C, relative humidity from 30% to 90%, sampling duration up to 14 h, flow rate of 1 and 2m3h-1and quantity of gaseous naphthalene considerably higher than the one usually collected during atmospheric sampling. Additionally, field experiments were carried out to test the matrix effect on the denuder performances. During these field experiments, and because the gaseous and particle atmospheric phases were trapped and analysed separately, it was possible to calculate the collection efficiency of the most volatile polycyclic aromatic hydrocarbons (PAHs). It was 100% assuming a relative standard deviation of 10% on this calculation. This set of results shows that the denuder-based sampling method is suitable for the sampling of the most volatile PAHs. 
NAAQS
• ISA-PM
     2009 Final
 

Jump to main content.

page loading graphic