AI Article Synopsis
- Systematic studies were conducted on hexachlorobenzene levels in the air around Beijing from July 2007 to March 2009, focusing on the period before and after the Olympic Games.
- The average concentration of hexachlorobenzene recorded was 264 pg/m³, with higher levels noted in winter, but a significant decrease in 2008 was observed compared to 2007 due to "Green Olympic" initiatives.
- The increase in winter hexachlorobenzene levels was primarily linked to high levels of total suspended particulates from sources like coal-burning and traffic emissions.
Article Abstract
Systematic studies of hexachlorobenzene in the ambient air before and after the Beijing Olympic Games were carried out during July 2007 to March 2009. Air samples were collected around 20th monthly on the roof of a building near the Olympic center. The average concentration of hexachlorobenzene was 264 pg x m(-3), which was higher in winter than other seasons. However, hexachlorobenzene concentration was decreased clearly in winter in 2008 compare with in 2007 due to the implementation of a series of "Green Olympic" policies. Gas-particle partitioning shows that the increase of hexachlorobenzene levels in winter time was mainly contributed by the high total suspended particulate from combustion processes such as coal-burning and traffic emission.
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| http://dx.doi.org/10.1007/s00128-010-0054-5 | DOI Listing |
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