Air-sea exchange of gaseous mercury in the East China Sea
文献类型：期刊论文
| 作者 | Wang, Chunjie; Ci, Zhijia; Wang, Zhangwei; Zhang, Xiaoshan |
| 刊名 | ENVIRONMENTAL POLLUTION
 |
| 出版日期 | 2016-05 |
| 卷号 | 212页码:535-543 |
| 关键词 | Gaseous elemental mercury Dissolved gaseous mercury Air-sea exchange East China Sea |
| 英文摘要 | Two oceanographic cruises were carried out in the East China Sea (ECS) during the summer and fall of 2013. The main objectives of this study are to identify the spatial-temporal distributions of gaseous elemental mercury (GEM) in air and dissolved gaseous mercury (DGM) in surface seawater, and then to estimate the Hg-0 flux. The GEM concentration was lower in summer (1.61 +/- 0.32 ng m(-3)) than in fall (2.20 +/- 0.58 ng m(-3)). The back-trajectory analysis revealed that the air masses with high GEM levels during fall largely originated from the land, while the air masses with low GEM levels during summer primarily originated from ocean. The spatial distribution patterns of total Hg (THg), fluorescence, and turbidity were consistent with the pattern of DGM with high levels in the nearshore area and low levels in the open sea. Additionally, the levels of percentage of DGM to THg (%DGM) were higher in the open sea than in the nearshore area, which was consistent with the previous studies. The THg concentration in fall was higher (1.47 +/- 0.51 ng l(-1)) than those of other open oceans. The DGM concentration (60.1 +/- 17.6 pg l(-1)) and Hg-0 flux (4.6 +/- 3.6 ng m(-2) h(-1)) in summer were higher than those in fall (DGM: 49.6 +/- 12.5 pg l(-1) and Hg-0 flux: 3.6 +/- 2.8 ng m(-2) h(-1)). The emission flux of Hg-0 from the ECS was estimated to be 27.6 tons yr(-1), accounting for similar to 0.98% of the global Hg-0 oceanic evasion though the ECS only accounts for similar to 0.21% of global ocean area, indicating that the ECS plays an important role in the oceanic Hg cycle. (C) 2016 Elsevier Ltd. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/35700]  |
| 专题 | 生态环境研究中心_大气环境科学实验室 |
| 推荐引用方式 GB/T 7714 | Wang, Chunjie,Ci, Zhijia,Wang, Zhangwei,et al. Air-sea exchange of gaseous mercury in the East China Sea[J]. ENVIRONMENTAL POLLUTION,2016,212:535-543. |
| APA | Wang, Chunjie,Ci, Zhijia,Wang, Zhangwei,&Zhang, Xiaoshan.(2016).Air-sea exchange of gaseous mercury in the East China Sea.ENVIRONMENTAL POLLUTION,212,535-543. |
| MLA | Wang, Chunjie,et al."Air-sea exchange of gaseous mercury in the East China Sea".ENVIRONMENTAL POLLUTION 212(2016):535-543. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
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。