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Passive sampler for monitoring ambient nitric acid (HNO3) and nitrous acid (HNO2) concentrationsAuthor(s): Andrzej Bytnerowicz; Maria Jose Sanz; Michael J. Arbaugh; Pamela E. Padgett; David P. Jones; Antonio Davila
Source: Atmospheric Environment. 39(2005): 2655–2660
Publication Series: Scientific Journal (JRNL)
Station: Pacific Southwest Research Station
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DescriptionA passive sampler for collection of gaseous nitric acid (HNO3) and nitrous acid (HNO2) is based on a diffusion of
ambient air through Teflon membrane and absorption of the pollutants on Nylasorb nylon filter. The sampler is simple
in design, easy to make, inexpensive and resistant to harsh weather conditions. The sampler has been calibrated against
honeycomb denuder systems in ambient southern California air and in controlled HNO3 exposures. It is more precise
than the old open-face HNO3 sampler. It can measure wide ranges of ambient HNO2 and HNO3 concentrations for
extended periods of time and can be used for regional-scale monitoring of the pollutants.
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CitationBytnerowicz, Andrzej; Sanz, Maria Jose; Arbaugh, Michael J.; Padgett, Pamela E.; Jones, David P.; Davila, Antonio. 2005. Passive sampler for monitoring ambient nitric acid (HNO3) and nitrous acid (HNO2) concentrations. Atmospheric Environment. 39(14): 2655-2660. https://doi.org/10.1016/j.atmosenv.2005.01.018.
KeywordsAir pollution, Nitrogenous air pollutants, Passive sampler, Monitoring, Remote sites
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