Andrew P. Rutter 1, James J. Schauer1,2, Charles C. Christensen1, Martin M. Shafer1,2, Michael F. Arndt2

  • 1 Environmental Chemistry and Technology Program, 660 N. Park Street, University of Wisconsin- Madison, Madison, WI 53706, USA
  • 2 Wisconsin State Laboratory of Hygiene, University of Wisconsin- Madison, 2601 Agriculture Drive, Madison, WI 53718, USA

Received: May 31, 2007
Revised: May 31, 2007
Accepted: May 31, 2007
Download Citation: ||https://doi.org/10.4209/aaqr.2006.10.0020  

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Cite this article:
Rutter, A.P., Schauer, J.J., Christensen, C.C., Shafer, M.M. and Arndt, M.F. (2007). The Impact of Hobby Rocket Motors on Atmospheric Fine Particle Zinc Concentrations. Aerosol Air Qual. Res. 7: 174-192. https://doi.org/10.4209/aaqr.2006.10.0020


 

ABSTRACT


Zinc concentrations in hobby rocket exhaust aerosols were measured by ICP-MS to be approximately 300 mg/g, revealing that hobby rocket motors emit particulate matter highly enriched in zinc. Zinc is a commonly used indicator species in receptor models for atmospheric particulate matter and is assumed to be emitted only by well-established point sources and mobile sources. The potential impact of the ephemeral particle-bound zinc from hobby rockets on atmospheric particulate zinc concentrations was estimated using a Gaussian puff model. The results from the model were compared to 24-hour averaged particulate zinc concentration data collected in three US urban centers. Potential impacts several kilometers downwind of the rocket launch site were found to be significant. Clearly the impact of ephemeral and unregistered emissions such as those from hobby rockets needs to be considered when using zinc in source apportionment models.


Keywords: Aerosol; Indicator species; Positive matrix factorization; Source apportionment; Bias


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