Annual time-series analyses of total gaseous mercury measurement and its impact factors on the Gongga mountains in the southeastern fringe of the Qinghai-Tibetan plateau

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 成都山地所知识仓储（2009年以前）

	Annual time-series analyses of total gaseous mercury measurement and its impact factors on the Gongga mountains in the southeastern fringe of the Qinghai-Tibetan plateau
	Zhu Wanze1 ; Fu Xuewu 2; Feng Xinbin 2; Lu, Julia Y.3
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2008-03-01
卷号	5 期号:1 页码:17-31
关键词	total gaseous mercury (TGM) diurnal variability seasonal variability meteorological factor Gongga mountains
ISSN号	1672-6316
合作状况	其它
英文摘要	Long-term monitoring programs for measurement of atmospheric mercury concentrations are presently recognized as powerful tools for local, regional and global studies of atmospheric long-range transport processes, and they could also provide valuable information about the impact of emission controls on the global budget of atmospheric mercury, their observance and an insight into the global mercury cycle. China is believed to be an increasing atmospheric mercury emission source. However, only a few measurements of mercury, to our knowledge, have been done in ambient air over China. The highly-time resolved atmospheric mercury concentrations have been measured at Moxi Base Station (102 degrees 72'E 29 degrees 92'N, 1640 in asl) of the Gongga Alpine Ecosystem Observation and Experiment Station of Chinese Academy of Sciences (CAS) from May 2005 to June 2006 by using a set of Automatic Atmospheric Mercury Speciation Analyzers (Tekran 2537A). Measurements were carried out with a time resolution 0 every 15 minutes. The overall average total gaseous mercury (TGM) covering the measurement periods was 4+/-1.38 ng.m(-3) (N=57310), which is higher than the global background level of approximately 1.5 similar to 2.0 ng.m(-3). The measurements in all seasons showed a similar diurnal change pattern with a high concentration during daytime relative to nighttime and maximum concentration near solar noon and minimum concentration immediately before sunrise. The presence of diurnal TGM peaks during spring and summer was found earlier than that during autumn and winter. When divided seasonally, it was found that the concentrations of TGM were highest in winter with 6.13 +/- 1.78 ng.m(-3) and lowest in summer with 3.17 +/- 0.67 ng.m(-3). There were no significant differences in TGM among wind sectors during each season. Whereas Hg generally exhibited significant correlations with the parameters, such as temperature, saturated vapor pressure, precipitation, ultraviolet radiation (LTV) and atmospheric pressure at the whole measurement stage, and the correlations varied seasonally. Our results suggest that the local or regional abundant geothermal activities, such as thermal spring, anthropogenic source processes and changes in meteorological conditions, regulate and affect Hg behavior in the study area.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Environmental Sciences
研究领域[WOS]	Environmental Sciences & Ecology
关键词[WOS]	TEMPORAL DISTRIBUTION CHARACTERISTICS ; ATMOSPHERIC MERCURY ; ANTHROPOGENIC SOURCES ; SPRINGTIME DEPLETION ; COAL COMBUSTION ; MACE-HEAD ; DEPOSITION ; CHINA ; AIR ; EMISSIONS
收录类别	SCI
语种	英语
WOS记录号	WOS:000254540600002
公开日期	2010-11-03
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/2417]
专题	成都山地灾害与环境研究所_成都山地所知识仓储（2009年以前）成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
作者单位	1.Chinese Acad Sci, Inst Mt Hazard & Environm, Chengdu 610041, Peoples R China 2.Chinese Acad Sci, Inst Geochem, State Key Lab Environm Chem, Guiyang 550002, Peoples R China 3.Ryerson Polytech Inst, Dept Chem & Biol, Toronto, ON M5B 2K3, Canada
推荐引用方式 GB/T 7714	Zhu Wanze,Fu Xuewu,Feng Xinbin,et al. Annual time-series analyses of total gaseous mercury measurement and its impact factors on the Gongga mountains in the southeastern fringe of the Qinghai-Tibetan plateau[J]. JOURNAL OF MOUNTAIN SCIENCE,2008,5(1):17-31.
APA	Zhu Wanze,Fu Xuewu,Feng Xinbin,&Lu, Julia Y..(2008).Annual time-series analyses of total gaseous mercury measurement and its impact factors on the Gongga mountains in the southeastern fringe of the Qinghai-Tibetan plateau.JOURNAL OF MOUNTAIN SCIENCE,5(1),17-31.
MLA	Zhu Wanze,et al."Annual time-series analyses of total gaseous mercury measurement and its impact factors on the Gongga mountains in the southeastern fringe of the Qinghai-Tibetan plateau".JOURNAL OF MOUNTAIN SCIENCE 5.1(2008):17-31.