Produção Nacional
Revisado por pares
Measurements of sulfur dioxide, ozone and ammonia concentrations in Asia, Africa, and South America using passive samplers
2003; Elsevier BV; Volume: 37; Issue: 9-10 Linguagem: Inglês
10.1016/s1352-2310(02)01009-9
ISSN1873-2844
AutoresGregory R. Carmichael, Martin Ferm, Narisara Thongboonchoo, Jung‐Hun Woo, Haiming Liu, Kentaro Murano, Pham Hung Viet, Carl Mossberg, Rajasekhlar Bala, Jariya Boonjawat, Pramote Upatum, Manju Mohan, Sharad Prasad Adhikary, A. B. Shrestha, Jacobus J. Pienaar, Ernst B Brunke, Tai C. Chen, Jie Tang, Guoan Ding, Leong Chow Peng, Sri Dhiharto, Hery Harjanto, A Marengo Jose, W. Kimani, Abdelmalek Kirouane, Jean-Pierre Lacaux, Sandrine Richard, Osvaldo Barturen, Jorge Carrasco, Augusto Athayde, Tania M. Tavares, José Silva Cotrina, Erdal Bilici,
Tópico(s)Air Quality Monitoring and Forecasting
ResumoMeasurements of gaseous SO2, NH3, and O3 using IVL passive sampler technology were obtained during a pilot measurement program initiated as a key component of the newly established WMO/GAW Urban Research Meteorology and Environment (GURME) project. Monthly measurements were obtained at 50 stations in Asia, Africa, South America, and Europe. The median SO2 concentrations vary from a high of 13 ppb at Linan, China, to <0.03 ppb at four stations. At 30 of 50 regional stations, the observed median concentrations are <1 ppb. Median ammonia concentrations range from 20 ppb at Dhangadi, India, to <1 ppb at nine stations. At 27 of regional stations, the ambient ammonia levels exceed 1 ppb. The median ozone concentrations vary from a maximum of 45 ppb at Waliguan Mountain, China, to 8 ppb in Petit Saut, French Guiana. In general, the highest ozone values are found in the mid-latitudes, with the Northern hemisphere mid-latitude values exceeding the Southern hemisphere mid-latitude levels, and the lowest values are typically found in the tropical regions.
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