节点文献

长白山地区大气气态总汞含量的季节性特征研究

Seasonal Variation of Total Gaseous Mercury in Changbai Mountain Area

  • 推荐 CAJ下载
  • PDF下载
  • 不支持迅雷等下载工具,请取消加速工具后下载。

【作者】 万奇冯新斌郑伟Lu Y-Julia韩士杰徐浩

【Author】 WAN Qi~(1,2),FENG Xin-bin~1,ZHENG Wei~(1,2),LU Y-Julia~3,HAN Shi-jie~4,XU Hao~4(1.State Key Laboratory of Environmental Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550002,China;2.Graduate University of Chinese Academy of Sciences,Beijing 100049,China;3.Department of Chemistry and Biology,Ryerson University,Toronto,Canada M5B 2K3;4.Open Research Station of Changbai Mountain Forest Ecosystems,Chinese Academy of Sciences,Yanbian 133613,China)

【机构】 中国科学院地球化学研究所环境地球化学国家重点实验室Department of Chemistry and Biology Ryerson UniversityTorontoCanada M5B 2K3中国科学院长白山森林生态系统开放研究站贵阳550002中国科学院研究生院北京100049延边133613

【摘要】 利用高时间分辨率自动大气测汞仪(Tekran○R2537A),于2005-08~2006-07对长白山地区大气气态总汞进行了连续1a的野外观测.结果表明,长白山地区气态总汞的年平均含量为(3.22±1.78)ng.m-3,按季节表现为:冬季>春季>秋季>夏季.长白山地区气态总汞含量高于北半球大气汞含量的背景值(1.5~2.0 ng.m-3),表明该地区已受到一定程度的大气汞污染.在对长白山地区气态总汞来源的解析中,该区频率最高的指示风向西南(SW)、西北(NW)和非主导风向东北(NE)方位上,城镇人为采暖、燃煤以及对生物燃料的使用成为该地区的气态总汞的主要来源,而土壤释放或其他来源的大气汞经中长距离的迁移也是造成该区域大气汞含量升高的原因.

【Abstract】 An intensive field campaign monitoring was conducted from August 2005 to July 2006 using the automatic atmospheric mercury analyzers for one year’s measurement of total gaseous mercury(TGM) in Changbai Mountain area.Results show the mean concentration of TGM is(3.22±1.78)(ng·m-3) and it presents seasonal variation as followings: winter >spring >autumn >summer.Given the background concentration of atmospheric mercury in the Northern Hemisphere,mercury concentrations are totally elevated in Changbai Mountain area.The regional source of mercury in the atmosphere seems to be anthropogenic Hg emissions mainly due to local biofuel use and coal combustion from industry and domestic uses.The potential mercury source may be regional mercury emissions from soil and the long distance transportation of mercury in the atmosphere.

【基金】 中国科学院重要方向项目(KZCX3-SW-443);国家自然科学基金重点项目(405320514)
  • 【文献出处】 环境科学 ,Environmental Science , 编辑部邮箱 ,2008年02期
  • 【分类号】X131.1
  • 【被引频次】64
  • 【下载频次】591
节点文献中: