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| Titel |
Measurements of atmospheric mercury in Shanghai during September 2009 |
| VerfasserIn |
H. R. Friedli, A. F. Arellano, F. Geng, C. Cai, L. Pan |
| 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 ; 11, no. 8 ; Nr. 11, no. 8 (2011-04-27), S.3781-3788 |
| Datensatznummer |
250009649
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| Publikation (Nr.) |
 copernicus.org/acp-11-3781-2011.pdf |
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| Zusammenfassung |
| We report on total gaseous mercury (TGM) measurements made in Pudong,
Shanghai in August/September 2009. The average TGM was 2.7 ± 1.7 ng m−3. This represents about 90% of the total atmospheric mercury.
This is an underestimate for an annual-mean concentration because the
meteorology in September favored predominantly easterly oceanic air,
replaced in other seasons by airflow from industrial areas. The observed TGM
follows a pattern seen in other cities around the world: a
background elevated over mean hemispheric background (1.5 ng m−3), and
pollution plumes of different magnitude and duration, interspersed with very
sharp spikes of high concentration (60 ng m−3). The September 2009
Shanghai measurements are lower than those reported for most other Chinese
cities and Mexico City, and similar to concentrations found in some Asian
and in North American cities. Such comparisons are tenuous because of
differences in season and year of the respective measurements. Our results
should not be used for regulatory purposes. We find that the observed TGM
are most likely coming from coal fired power plants, smelters and industrial
sources, based on its high correlation with NOx, SO2, CO and wind
directions. |
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