汽车、飞机和生物源排放的醛类和芳香族化合物的比较研究。
Comparative study of automotive, aircraft and biogenic emissions of aldehydes and aromatic compounds.
机构信息
Physical Chemistry Department, Federal University of Rio de Janeiro, CT, Building A, Room 408, Cidade Universitária, Rio de Janeiro, RJ 21949-900, Brazil.
出版信息
Bull Environ Contam Toxicol. 2010 Feb;84(2):180-4. doi: 10.1007/s00128-009-9891-5. Epub 2009 Oct 6.
Air samples were collected in three well characterized locations in the city of Rio de Janeiro, Brazil: downtown, the idle and taxi way areas of the national airport and an urban forest, where the main emissions are from vehicular, aircraft and biogenic sources, respectively. Aldehydes and BTEX concentrations show a characteristic profile which may be attributed to the emission sources. Formaldehyde/acetaldehyde ratios, in the early morning, were 1.39, 0.62 and 2.22 in downtown, airport and forest, respectively. Toluene/benzene ratios, for downtown, airport and forest areas, were 1.11, 1.82 and 1.06, respectively. The results show that the impact of the urban emissions on the forest is negligible as well as the impact of aircraft emissions over the urban area.
空气样本采集自巴西里约热内卢市三个特征明显的地点
市中心、国家机场的空闲和滑行道区域以及城市森林，这些地点的主要排放源分别为车辆、飞机和生物源。醛类和 BTEX（苯、甲苯、二甲苯）浓度呈现出特定的分布模式，这可能归因于排放源。在清晨，市中心、机场和森林地区的甲醛/乙醛比值分别为 1.39、0.62 和 2.22。对于市中心、机场和森林地区，甲苯/苯的比值分别为 1.11、1.82 和 1.06。结果表明，城市排放对森林的影响可以忽略不计，而飞机排放对城市区域的影响也可以忽略不计。
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