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| Titel |
Comparative assessment of ecotoxicity of urban aerosol |
| VerfasserIn |
B. Turóczi, A. Hoffer, Á. Tóth, N. Kováts, A. Ács, Á. Ferincz, A. Kovacs, A. Gelencsér |
| 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. 16 ; Nr. 12, no. 16 (2012-08-16), S.7365-7370 |
| Datensatznummer |
250011389
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| Publikation (Nr.) |
 copernicus.org/acp-12-7365-2012.pdf |
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| Zusammenfassung |
| In addition to its mass concentration, the health effects of urban
particulate matter may depend on its particle size distribution and chemical
composition. Yet air pollution regulations rely on exclusively bulk
PM10 concentration measurements, without regard to their potentially
different health effects under different conditions. Aerosols from various
sources are well known to contain a plethora of toxic, carcinogenic,
mutagenic or teratogenic constituents such as heavy metals and polycyclic
aromatic hydrocarbons. Extensive public health studies established the link
between mass concentrations of PM2.5 / PM10 and health problems
within the population. However, little is known about the relative
importance of PM from different sources and the effect of seasonality on the
toxicity. Here we present the application of a simple and sensitive method
for the direct assessment of the overall ecotoxicity of various
PM2.5 / PM10 samples collected on filters. The method is based on
the Vibrio fischeri bioluminescence inhibition bioassay that has been standardized for
solid samples, representing a relevant biological exposure route. Direct
emission samples proved to be significantly more ecotoxic than
photochemically processed aerosol, thus marked differences were observed
between the ecotoxicities of urban PM10 in summer and winter. These
effects of urban PM10 may be useful supplementary indicators besides
the mass concentrations of PM2.5 / PM10 in cities. |
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