Characteristics of mercury speciation in seawater and emission flux of gaseous mercury in the Bohai Sea and Yellow Sea

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 城市与区域生态国家重点实验室

	Characteristics of mercury speciation in seawater and emission flux of gaseous mercury in the Bohai Sea and Yellow Sea
	Wang, Chunjie; Wang, Zhangwei; Zhang, Xiaoshan
刊名	ENVIRONMENTAL RESEARCH
	2020-03
卷号	182 页码:1-10
关键词	Atmospheric gaseous elemental mercury Dissolved gaseous mercury Total mercury Methylmercury Sea-air exchange Distribution
ISSN号	0013-9351
英文摘要	Four cruises were performed in the Bohai Sea (BS) and Yellow Sea (YS) to ascertain the levels and distributions of gaseous elemental mercury (GEM), dissolved gaseous mercury (DGM), methylmercury (MeHg), and total mercury (THg) during 2012 and 2014. Their concentrations and Hg-0 flux exhibited clear spatial-temporal distributions. The GEM level over the BS in spring (2.71 +/- 0.49 ng m(-3)) was significantly higher than that in fall (1.98 +/- 0.91 ng m(-3)). Air masses with elevated GEM mainly originated from northern China. During the two cruises in 2012 over the BS, the mean DGM concentration in spring (35.7 +/- 4.6 pg l(-1)) was comparable to that in fall (32.4 +/- 4.6 pg l(-1)). During the spring cruise of 2014, the mean DGM concentration in the BS (52.8 +/- 12.5 pg l(-1)) was comparable to that in the YS (52.4 +/- 14J pg l(-1)), while during the fall cruise of 2014, it was significantly lower in the BS (26.7 +/- 14.4 pg l(-1)) than in the YS (57.2 +/- 17.9 pg l(-1)). DGM represents a small portion of unfiltered THg in the BS (3.95%) and YS (5.12%). The MeHg and MeHg% values were higher in nearshore areas than in open sea, indicating higher productivity in coastal regions. The Hg-0 flux in the YS (4.56 ng m(-2) h(-1)) was about twice that in the BS. The annual emission Hg-0 fluxes from the BS and YS were 2.71 and 23.68 tons yr(-1), respectively.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/44237]
专题	生态环境研究中心_城市与区域生态国家重点实验室
推荐引用方式 GB/T 7714	Wang, Chunjie,Wang, Zhangwei,Zhang, Xiaoshan. Characteristics of mercury speciation in seawater and emission flux of gaseous mercury in the Bohai Sea and Yellow Sea[J]. ENVIRONMENTAL RESEARCH,2020,182:1-10.
APA	Wang, Chunjie,Wang, Zhangwei,&Zhang, Xiaoshan.(2020).Characteristics of mercury speciation in seawater and emission flux of gaseous mercury in the Bohai Sea and Yellow Sea.ENVIRONMENTAL RESEARCH,182,1-10.
MLA	Wang, Chunjie,et al."Characteristics of mercury speciation in seawater and emission flux of gaseous mercury in the Bohai Sea and Yellow Sea".ENVIRONMENTAL RESEARCH 182(2020):1-10.