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| Titel |
Contribution of garbage burning to chloride and PM2.5 in Mexico City |
| VerfasserIn |
G. Li, W. Lei, N. Bei, L. T. Molina |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 12, no. 18 ; Nr. 12, no. 18 (2012-09-27), S.8751-8761 |
| Datensatznummer |
250011476
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| Publikation (Nr.) |
 copernicus.org/acp-12-8751-2012.pdf |
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| Zusammenfassung |
| The contribution of garbage burning (GB) emissions to
chloride and PM2.5 in the Mexico City Metropolitan Area (MCMA) has been
investigated for the period of 24 to 29 March during the MILAGRO-2006
campaign using the WRF-CHEM model. When the MCMA 2006 official emission
inventory without biomass burning is used in the simulations, the WRF-CHEM
model significantly underestimates the observed particulate chloride in the
urban and the suburban areas. The inclusion of GB emissions substantially
improves the simulations of particulate chloride; GB contributes more than
60% of the observation, indicating that it is a major source of
particulate chloride in Mexico City. GB yields up to 3 pbb HCl at the ground
level in the city, which is mainly caused by the burning of polyvinyl
chloride (PVC) in the garbage. GB is also an important source of PM2.5,
contributing about 3–30% simulated PM2.5 mass on average. More
modeling work is needed to evaluate the GB contribution to hazardous air
toxics, such as dioxin, which is found to be released at high level from PVC
burning in laboratory experiments. |
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