Elemental mercury (Hg(0)) in air and surface waters of the Yellow Sea during late spring and late fall 2012: Concentration, spatial-temporal distribution and air/sea flux

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 大气环境科学实验室

	Elemental mercury (Hg(0)) in air and surface waters of the Yellow Sea during late spring and late fall 2012: Concentration, spatial-temporal distribution and air/sea flux
	Ci, Zhijia; Wang, Chunjie; Wang, Zhangwei; Zhang, Xiaoshan
刊名	CHEMOSPHERE
	2015-01
卷号	119 期号:1 页码:199-208
关键词	Dissolved gaseous mercury Gaseous elemental mercury Air/sea mercury exchange Emission flux The Yellow Sea
英文摘要	The Yellow Sea in East Asia receives great Hg input from regional emissions. However, Hg cycling in this marine system is poorly investigated. In late spring and late fall 2012, we determined gaseous elemental Hg (GEM or Hg(0)) in air and dissolved gaseous Hg (DGM, mainly Hg(0)) in surface waters to explore the spatial-temporal variations of Hg(0) and further to estimate the air/sea Hg(0) flux in the Yellow Sea. The results showed that the GEM concentrations in the two cruises were similar (spring: 1.86 +/- 0.40 ng m(-3); fall: 1.84 +/- 0.50 ng m(-3)) and presented similar spatial variation pattern with elevated concentrations along the coast of China and lower concentrations in the open ocean. The DGM concentrations of the two cruises were also similar with 27.0 +/- 6.8 pg L-1 in the spring cruise and 28.2 +/- 9.0 pg L-1 in the fall cruise and showed substantial spatial variation. The air/sea Hg(0) fluxes in the spring cruise and fall cruise were estimated to be 1.06 +/- 0.86 ng m(-2) h(-1) and 2.53 +/- 2.12 ng m(-2) h(-1), respectively. The combination of this study and our previous summer cruise showed that the summer cruise presented enhanced values of GEM, DGM and air/sea Hg(0) flux. The possible reason for this trend was that high solar radiation in summer promoted Hg(0) formation in seawater, and the high wind speed during the summer cruise significantly increased Hg(0) emission from sea surface to atmosphere and subsequently enhanced the GEM levels. (C) 2014 Elsevier Ltd. All rights reserved.
研究领域[WOS]	Environmental Sciences
WOS记录号	WOS:000347739600028
公开日期	2016-03-08
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/32455]
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	Ci, Zhijia,Wang, Chunjie,Wang, Zhangwei,et al. Elemental mercury (Hg(0)) in air and surface waters of the Yellow Sea during late spring and late fall 2012: Concentration, spatial-temporal distribution and air/sea flux[J]. CHEMOSPHERE,2015,119(1):199-208.
APA	Ci, Zhijia,Wang, Chunjie,Wang, Zhangwei,&Zhang, Xiaoshan.(2015).Elemental mercury (Hg(0)) in air and surface waters of the Yellow Sea during late spring and late fall 2012: Concentration, spatial-temporal distribution and air/sea flux.CHEMOSPHERE,119(1),199-208.
MLA	Ci, Zhijia,et al."Elemental mercury (Hg(0)) in air and surface waters of the Yellow Sea during late spring and late fall 2012: Concentration, spatial-temporal distribution and air/sea flux".CHEMOSPHERE 119.1(2015):199-208.