Journal article

Measurements of atmospheric mercury in Shanghai during September 2009

Friedli H, Arellano A, Geng F, Cai C, Pan L ...see all

Atmospheric Chemistry and Physics Discussions, vol. 10, issue 12 (2010) pp. 30279-30303 Published by European Geosciences Union, c/o E.O.S.T. Strasbourg Cedex 67084 France

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We report on total gaseous mercury (TGM) measurements made in Pudong, Shanghai in August/September 2009. The average TGM was 2.7 plus or minus 1.7 ng m super(-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 super(-3)), and pollution plumes of different magnitude and duration, interspersed with very sharp spikes of high concentration (60 ng m super(-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. 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 NO sub(x), SO sub(2), CO and wind directions.

Author-supplied keywords

  • Airflow
  • Atmospheric chemistry
  • Atmospheric pollution
  • Coal
  • Coal combustion
  • Correlations
  • INW, China, People's Rep., Shanghai
  • M2 551.510.42:Air Pollution (551.510.42)
  • M3 1010:Issues in Sustainable Development
  • Mercury
  • Mercury in the atmosphere
  • Meteorology
  • Mexico, Distrito Federal, Mexico City
  • Plumes
  • Power plants
  • Seasonal variability
  • Smelters
  • Sulfur dioxide
  • Sustainability Science Abstracts; Meteorological &
  • Urban areas
  • Wind direction
  • air flow

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  • H R Friedli

  • A F Jr Arellano

  • F Geng

  • C Cai

  • L Pan

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