GYIG OpenIR  > 环境地球化学国家重点实验室
Seasonal atmospheric deposition and air-sea gas exchange of polycyclic aromatic hydrocarbons over the Yangtze River Estuary, East China Sea: Implications for source-sink processes
Yuqing Jiang;  Tian Lin;  Zilan Wu;  Yuanyuan Li;  Zhongxia Li;  Zhigang Guo;  Xiaohong Yao
2018
发表期刊Atmospheric Environment
卷号178页码:31-40
摘要

In this work, air samples and surface seawater samples covering four seasons from March 2014 to January 2015 were collected from a background receptor site in the YRE to explore the seasonal fluxes of air-sea gas exchange and dry and wet deposition of 15 polycyclic aromatic hydrocarbons (PAHs) and their source-sink processes at the air-sea interface. The average dry and wet deposition fluxes of 15 PAHs were estimated as 879 +/- 1393 ng m(-2) d(-1) and 755 +/- 545 ng m(-2) d(-1), respectively. Gaseous PAH release from seawater to the atmosphere averaged 3114 +/- 1999 ng m(-2) d(-1) in a year round. The air-sea gas exchange of PAHs was the dominant process at the air-sea interface in the YRE as the magnitude of volatilization flux of PAHs exceeded that of total dry and wet deposition. The gas PAH exchange flux was dominated by three-ring PAHs, with the highest value in summer and lowest in winter, indicating a marked seasonal variation owing to differences in Henry's law constants associated with temperature, as well as wind speed and gaseous-dissolved gradient among seasons. Based on the simplified mass balance estimation, a net 11 tons y(-1) of PAHs (mainly three-ring PAHs) were volatilized from seawater to the atmosphere in a similar to 20,000 km(2) area in the YRE. Other than the year-round Yangtze River input and ocean ship emissions, the selective release of low-molecular-weight PAHs from bottom sediments in winter due to resuspension triggered by the East Asian winter monsoon is another potential source of PAHs. This work suggests that the source-sink processes of PAHs at the air-sea interface in the YRE play a crucial role in regional cycling of PAHs.

关键词Air-sea Gas Exchange Dry Deposition Wet Deposition Pahs Source-sink Process Yangtze River Estuary
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.gyig.ac.cn/handle/42920512-1/8718
专题环境地球化学国家重点实验室
作者单位1.Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Institute of Atmospheric Sciences, Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China
2.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
3.College of Environmental Science & Engineering, Ocean University of China, Qingdao 266100, China
推荐引用方式
GB/T 7714
Yuqing Jiang;Tian Lin;Zilan Wu;Yuanyuan Li;Zhongxia Li;Zhigang Guo;Xiaohong Yao. Seasonal atmospheric deposition and air-sea gas exchange of polycyclic aromatic hydrocarbons over the Yangtze River Estuary, East China Sea: Implications for source-sink processes[J]. Atmospheric Environment,2018,178:31-40.
APA Yuqing Jiang;Tian Lin;Zilan Wu;Yuanyuan Li;Zhongxia Li;Zhigang Guo;Xiaohong Yao.(2018).Seasonal atmospheric deposition and air-sea gas exchange of polycyclic aromatic hydrocarbons over the Yangtze River Estuary, East China Sea: Implications for source-sink processes.Atmospheric Environment,178,31-40.
MLA Yuqing Jiang;Tian Lin;Zilan Wu;Yuanyuan Li;Zhongxia Li;Zhigang Guo;Xiaohong Yao."Seasonal atmospheric deposition and air-sea gas exchange of polycyclic aromatic hydrocarbons over the Yangtze River Estuary, East China Sea: Implications for source-sink processes".Atmospheric Environment 178(2018):31-40.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
Seasonal atmospheric(1013KB)期刊论文作者接受稿开放获取CC BY-NC-SA浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Yuqing Jiang;Tian Lin;Zilan Wu;Yuanyuan Li;Zhongxia Li;Zhigang Guo;Xiaohong Yao]的文章
百度学术
百度学术中相似的文章
[Yuqing Jiang;Tian Lin;Zilan Wu;Yuanyuan Li;Zhongxia Li;Zhigang Guo;Xiaohong Yao]的文章
必应学术
必应学术中相似的文章
[Yuqing Jiang;Tian Lin;Zilan Wu;Yuanyuan Li;Zhongxia Li;Zhigang Guo;Xiaohong Yao]的文章
相关权益政策
暂无数据
收藏/分享
文件名: Seasonal atmospheric deposition and air–sea gas exchange of polycyclic aromatic hydrocarbons over the Yangtze River Estuary, East China Sea.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。