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

Developmental Biology

Pamela E. Padgett¹ 

[1] USDA Forest Service, Riverside Fire Lab. 4955 Canyon Crest Drive Riverside, CA 92507 USA$$

关键词: Work atmosphere;    Asbestos;    Asbestos-cement sheets;    Phase-contrast and polarized-Light microscopy;   

DOI  :  10.5094/APR.2010.004

学科分类：农业科学（综合）

来源: Dokuz Eylul Universitesi * Department of Environmental Engineering

【 摘 要 】

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.

【 授权许可】

Unknown   

【 预 览 】

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RO201912040527558ZK.pdf	625KB	PDF