Source apportionment of priority PAHs in 11 lake sediment cores from Songnen Plain, Northeast China

	Source apportionment of priority PAHs in 11 lake sediment cores from Songnen Plain, Northeast China
	Bao, Kunshan; Zaccone, Claudio; Tao, Yuqiang; Wang, Jian; Shen, Ji; Zhang, Yifeng
刊名	WATER RESEARCH
	2020
卷号	168
英文摘要	Elevated concentrations of polycyclic aromatic hydrocarbons (PAHs) have been observed with rapid agricultural and industrial development in the Songnen Plain, Northeast China, but the prospective sources have not been yet apportioned. The concentration of PAHs was measured in 31 sediment samples from 11 Songnen Plain lakes in 2015. The background flux of PAHs in these lake sediments is < 463 mu g m(-2) year(-1). The maximal concentration of 16 U.S. EPA priority PAHs (599 ng g(-1)) recorded in this study is lower or similar to that found in most of the lake sediments across China, but higher than remote areas, such as North America Rocky Mountains. Both concentration and flux of PAHs increased after the 1950s, which correspond to the industrial development in this area and would probably mark the beginning of the Anthropocene in this region. A chemical mass balance model estimated that straw burning was a major source of Sigma(13)PAH (3-6 rings) during the past 200 years, with an average contribution of 22.1%, followed by forest fire (21.2%), burning of gasoline (19.1%), coal (12.2%), coke (4.8%) and diesel (3.9%), whereas the contribution from crude oil and natural gas was negligible (<1%). Straw burning (20.2-25.2%) and forest fire (16.7-30.6%) were major sources of PAHs and contributed increasing flux in the past 200 years. The elevated level of PAH recorded after 1950s in this region are also from burning of gasoline (26.1-26.4%), coal (15.3-15.8%), and coke (5.1-9.0%). The contribution of petrogenic sources (e.g., direct oil spill) to the concentration of Sigma(13)PAH seemed to be ignorable, at least in these lakes. (C) 2019 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://159.226.73.51/handle/332005/20250]
专题	中国科学院南京地理与湖泊研究所
推荐引用方式 GB/T 7714	Bao, Kunshan,Zaccone, Claudio,Tao, Yuqiang,et al. Source apportionment of priority PAHs in 11 lake sediment cores from Songnen Plain, Northeast China[J]. WATER RESEARCH,2020,168.
APA	Bao, Kunshan,Zaccone, Claudio,Tao, Yuqiang,Wang, Jian,Shen, Ji,&Zhang, Yifeng.(2020).Source apportionment of priority PAHs in 11 lake sediment cores from Songnen Plain, Northeast China.WATER RESEARCH,168.
MLA	Bao, Kunshan,et al."Source apportionment of priority PAHs in 11 lake sediment cores from Songnen Plain, Northeast China".WATER RESEARCH 168(2020).