The effect of ambient ozone and humidity on the performance of nylon and Teflon filters used in ambient air monitoring filter-pack systems

Pamela E. Padgett

doi:10.5094/APR.2010.004

Treesearch

The effect of ambient ozone and humidity on the performance of nylon and Teflon filters used in ambient air monitoring filter-pack systems

Formally Refereed

Authors:

Pamela E. Padgett

Year:

2010

Type:

Scientific Journal

Station:

Pacific Southwest Research Station

DOI:

https://doi.org/10.5094/APR.2010.004

Source:

Atmospheric Pollution Research 1(1): 23-29

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Abstract

Nylon and Teflon filter media are frequently used for monitoring ambient air pollutants. These media are subject to many environmental factors that may influence adsorption and retention of particulate and gaseous nitrogenous pollutants. This study evaluated the effects of ozone and humidity on the efficacy of nylon and Teflon filters used in the US dry deposition monitoring network. Ozone was shown to reduce retention of nitric acid on nylon filters and high humidity was shown to dramatically increase retention on nitrate on Teflon filters.

Keywords

Nitric acid, dry deposition, ozone, filter pack, ammonia

Citation

Padgett PE. 2010. The effect of ambient ozone and humidity on the performance of nylon and Teflon filters used in ambient air monitoring filter-pack systems. Atmospheric Pollution Research 1(1):23-29