Temporal variation of total gaseous mercury in the air of Guiyang, China
Open Access
- 5 February 2004
- journal article
- research article
- Published by American Geophysical Union (AGU) in Journal of Geophysical Research: Solid Earth
- Vol. 109 (D3), D03303 1-9
- https://doi.org/10.1029/2003jd004159
Abstract
[1] Total gaseous mercury (TGM) concentrations in ambient air were monitored at an urban site in Guiyang from 23 November 2001 to 30 November 2002 using a high temporal resolution 5 min mercury vapor analyzer (Tekran 2537A). TGM concentrations follow lognormal frequency distribution pattern, and the mean TGM concentration at the measurement site is 8.40 ng m−3 on the basis of 1 year observation. TGM concentrations in Guiyang are significantly elevated compared to the continental global background values. Coal combustion from both industrial and domestic uses is estimated to be the primary atmospheric source. A seasonal distribution pattern of TGM with a descending order of winter, spring, fall, and summer was observed. The highest TGM concentration in winter is attributed to household heating using coal. A consistent diurnal distribution pattern of TGM was obtained among all seasons, and the nighttime TGM concentration is elevated compared to the daytime values. Meteorological conditions are responsible for the formation of diurnal TGM distribution pattern. Tremendous efforts are needed to reduce mercury emissions from coal combustion to decrease TGM concentrations in Guiyang.Keywords
This publication has 49 references indexed in Scilit:
- Mercury speciation in the flue gas of a small-scale coal-fired boiler in Guiyang, PR ChinaJournal de Physique IV, 2003
- Gaseous mercury exchange rate between air and water over Baihua reservir, Guizhou, China during cold seasonJournal de Physique IV, 2003
- Atmospheric mercury measurements at Cape Point, South AfricaAtmospheric Environment, 2002
- Some insights into short-term variability of total gaseous mercury in urban airAtmospheric Environment, 2001
- Modes of occurrence of mercury in coals from Guizhou, People's Republic of ChinaFuel, 1999
- The atmospheric cycling and air–sea exchange of mercury species in the South and equatorial Atlantic OceanDeep Sea Research Part II: Topical Studies in Oceanography, 1999
- Atmospheric mercury—An overviewAtmospheric Environment, 1998
- Long-term changes in concentration and deposition of atmospheric mercury over ScandinaviaWater, Air, & Soil Pollution, 1995
- International field intercomparison of atmospheric mercury measurement methodsWater, Air, & Soil Pollution, 1995
- Mercury in the Swedish environment ? Recent research on causes, consequences and corrective methodsWater, Air, & Soil Pollution, 1991