期刊
ATMOSPHERIC ENVIRONMENT
卷 36, 期 34, 页码 5395-5403出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S1352-2310(02)00414-4
关键词
PAHs; bulk deposition; transport; flux; seasonal variation
Fifty-eight weekly samples of atmospheric bulk deposition (dry and wet) were collected in France at six specific sites over a year. Urban, semi-rural, rural and forested sites were chosen on a transverse from West to East at the Paris latitude. Seasonal variations are described, with winter time concentrations 2-3 times higher than summer ones due to an increase in fossil fuel consumption in winter. When temperature did not exceed 12degreesC, mean PAH concentrations varied from 221 ng l(-1) in Paris to 25 ng l(-1) at a rural site. About 50 km far from Paris, PAH concentrations decreased by two-thirds. Urban emissions have a local impact on the fallout contamination. Fluxes at the Paris site (from 157-1294 ng m(-2) d(-1)) were from 2.5-6 times higher than in the rural and forested sites. In the latter sites, mean daily fluxes (50 ng m(-2) d(-1)) were close to those of high European mountains, considered as background levels. In rural sites, without treatment plant sludge spreading, atmospheric deposition is the major source of PAH inputs to soils. (C) 2002 Elsevier Science Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据