the interaction of n2o5 with mineral dust: aerosol flow tube and knudsen reactor studies

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ID: 227964
2008
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Abstract
The interaction of mineral dust with N2O5 was investigated using both airborne mineral aerosol (using an aerosol flow reactor with variable relative humidity) and bulk samples (using a Knudsen reactor at zero humidity). Both authentic (Saharan, SDCV) and synthetic dust samples (Arizona test dust, ATD and calcite, CaCO3) were used to derive reactive uptake coefficients (γ). The aerosol experiments (Saharan dust only) indicated efficient uptake, with e.g. a value of γ(SDCV)=(1.3±0.2)×10−2 obtained at zero relative humidity. The values of γ obtained for bulk substrates in the Knudsen reactor studies are upper limits due to assumptions of available surface area, but were in reasonable agreement with the AFT measurements, with: γ(SDCV)=(3.7±1.2)×10−2, γ(ATD)=(2.2±0.8)×10−2 and γ(CaCO3=(5±2)×10−2. The errors quoted are statistical only. The results are compared to literature values and assessed in terms of their impact on atmospheric N2O5.
Reference Key
schuster2008atmosphericthe Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;G. Schuster;H. de Coninck;N. Holmes;F. Hanisch;C. Wagner;J. N. Crowley
Journal Journal of agricultural and food chemistry
Year 2008
DOI
DOI not found
URL
http://www.atmos-chem-phys.net/8/91/2008/acp-8-91-2008.pdf
Keywords
physicschemistry

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