Sources and Pathways of Polycyclic Aromatic Hydrocarbons Transported to   Alert, the Canadian High Arctic

doi:10.1021/es902203w

CORC > 北京大学 > 城市与环境学院

	Sources and Pathways of Polycyclic Aromatic Hydrocarbons Transported to Alert, the Canadian High Arctic
	Wang, Rong ; Tao, Shu ; Wang, Bin ; Yang, Yu ; Lang, Chang ; Zhang, Yanxu ; Hu, Jing ; Ma, Jianmin ; Hung, Hayley
刊名	environmental science technology
	2010
关键词	ORGANOCHLORINE PESTICIDES ORGANIC-COMPOUNDS AIR POLLUTANTS EMISSION CHINA PAHS ATMOSPHERE POLLUTION PARTICLE
DOI	10.1021/es902203w
英文摘要	A probabilistic function (integrated source contribution function, ISCF) based on backward air mass trajectory calculation was developed to track sources and atmospheric pathways of polycyclic aromatic hydrocarbons (PAHs) to the Canadian High Arctic station of Alert. In addition to the movement of air masses, the emission intensities at the sources and the major processes of partition, indirect photolysis, and deposition occurring on the way to the Arctic were incorporated into the ISCF. The predicted temporal trend of PAHs at Alert was validated by measured PAH concentrations throughout 2004. The PAH levels in the summer are orders of magnitude lower than those in the winter and spring when long-range atmospheric transport events occur more frequently. PAHs observed at Alert are mostly from East Asia (including Russia Far East), North Europe (including European Russia), and North America. These sources account for 25, 45, and 27% of PAHs atmospheric level at Alert, respectively. Source regions and transport pathways contributing to the PAHs contamination in the Canadian High Arctic vary seasonally. In the winter, Russia and Europe are the major sources. PAHs from these sources travel eastward and turn to the north at approximately 120 degrees E before reaching Alert, in conjunction with the well-known Arctic haze events. In the spring, PAHs from Russia and Europe first migrate to the west and then turn to the north at 60 degrees W toward Alert The majority of PAHs in the summer are from northern Canada where they are carried to Alert via low-level transport pathways. In the fall, 70% of PAHs arriving at Alert are delivered from North American sources.; Engineering, Environmental; Environmental Sciences; SCI(E); EI; PubMed; 19; ARTICLE; 3; 1017-1022; 44
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/160740]
专题	城市与环境学院
推荐引用方式 GB/T 7714	Wang, Rong,Tao, Shu,Wang, Bin,et al. Sources and Pathways of Polycyclic Aromatic Hydrocarbons Transported to Alert, the Canadian High Arctic[J]. environmental science technology,2010.
APA	Wang, Rong.,Tao, Shu.,Wang, Bin.,Yang, Yu.,Lang, Chang.,...&Hung, Hayley.(2010).Sources and Pathways of Polycyclic Aromatic Hydrocarbons Transported to Alert, the Canadian High Arctic.environmental science technology.
MLA	Wang, Rong,et al."Sources and Pathways of Polycyclic Aromatic Hydrocarbons Transported to Alert, the Canadian High Arctic".environmental science technology (2010).