Source, concentration, and distribution of elemental mercury in the atmosphere in Toronto, Canada
| Autor: | Julia Lu, Dave Yap, Muhammad Yousaf, Elaine Cairns, Y. Huang, Irene Cheng, Makshoof Athar, Kavitharan Tharumakulasingam |
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| Rok vydání: | 2011 |
| Předmět: |
010504 meteorology & atmospheric sciences
Meteorology Indoor air Health Toxicology and Mutagenesis chemistry.chemical_element Atmospheric mercury 010501 environmental sciences Toxicology Atmospheric sciences 01 natural sciences Human health Air Pollution 11. Sustainability Cities 0105 earth and related environmental sciences Ontario Air Pollutants Atmosphere Outdoor air quality Elemental mercury Mercury General Medicine Pollution Mercury (element) Above ground chemistry 13. Climate action Environmental science Environmental Monitoring |
| Zdroj: | Environmental Pollution. 159:2003-2008 |
| ISSN: | 0269-7491 |
| DOI: | 10.1016/j.envpol.2010.12.006 |
| Popis: | Atmospheric gaseous elemental mercury [GEM] at 1.8, 4, and 59 m above ground, in parking lots, and in indoor and outdoor air was measured in Toronto City, Canada from May 2008–July 2009. The average GEM value at 1.8 m was 1.89 ± 0.62 ng m −3 . The GEM values increased with elevation. The average GEM in underground parking lots ranged from 1.37 to 7.86 ng m −3 and was higher than those observed from the surface parking lots. The GEM in the indoor air ranged from 1.21 to 28.50 ng m −3 , was higher in the laboratories than in the offices, and was much higher than that in the outdoor air. All these indicate that buildings serve as sources of mercury to the urban atmosphere. More studies are needed to estimate the contribution of urban areas to the atmospheric mercury budget and the impact of indoor air on outdoor air quality and human health. |
| Databáze: | OpenAIRE |
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