Characteristics of mercury exchange flux between soil and air in the heavily air-polluted area, eastern Guizhou, China
Characteristics of mercury exchange flux between soil and air in the heavily air-polluted area, eastern Guizhou, China
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黔东空气重污染区土壤与空气汞交换通量特征
DOI：
10.1016/j.atmosenv.2007.03.002
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发表时间：
2007-09
影响因子：
5
通讯作者：
Wei, Zhongqing
中科院分区：
文献类型：
--
作者：
Qiu, Guangle;Fu, Xuewu;Wang, Shaofeng;Feng, Xinbin;Wei, Zhongqing
为研究大气重污染区土壤-大气汞交换特征，于2002年11月和2004年7 ~ 8月对万山汞矿区大气中总气态汞（TGM）浓度和汞交换通量进行了测定。结果表明，WMMA环境空气中TGM的平均浓度（17.8-1101.8ngm−3）、汞的平均排放通量（162- 27827 ngm − 2 h −1）和汞的平均干沉降通量（0- 9434 ngm − 2 h −1）均比背景区高1-4个数量级。据认为，富汞土壤是WMMA大气中汞的重要来源。研究还发现，广泛分布的焙烧朱砂银行的净汞来源的大气中WMMA。研究了汞交换通量与环境参数的关系。结果表明，高土壤总汞浓度和太阳辐射会加速土壤汞的释放。然而，环境空气中TGM浓度的升高会抑制土壤汞的排放，甚至导致大气汞强烈沉积到土壤表面。重污染大气中的大量气态汞可在土壤和空气之间快速、局部地循环。在大气重污染区，植被可以抑制土壤汞的排放，是大气汞的重要汇。
To investigate the characteristics of mercury exchange between soil and air in the heavily air-polluted area, total gaseous mercury (TGM) concentration in air and Hg exchange flux were measured in Wanshan Hg mining area (WMMA) in November, 2002 and July–August, 2004. The results showed that the average TGM concentrations in the ambient air (17.8–1101.8ngm−3), average Hg emission flux (162–27827ngm−2h−1) and average Hg dry deposition flux (0–9434ngm−2h−1) in WMMA were 1–4 orders of magnitude higher than those in the background area. It is said that mercury-enriched soil is a significant Hg source of the atmosphere in WMMA. It was also found that widely distributed roasted cinnabar banks are net Hg sources of the atmosphere in WMMA. Relationships between mercury exchange flux and environmental parameters were investigated. The results indicated that the rate of mercury emission from soil could be accelerated by high total soil mercury concentration and solar irradiation. Whereas, highly elevated TGM concentrations in the ambient air can restrain Hg emission from soil and even lead to strongly atmospheric Hg deposition to soil surface. A great amount of gaseous mercury in the heavily polluted atmosphere may cycle between soil and air quickly and locally. Vegetation can inhibit mercury emission from soil and are important sinks of atmospheric mercury in heavily air-polluted area.
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影响因子：
5
作者：
Gustin, MS;Biester, H;Kim, CS
通讯作者：
Kim, CS
影响因子：
4.4
作者：
Gustin, MS;Lindberg, S;Zhang, H
通讯作者：
Zhang, H
影响因子：
--
作者：
M. Gustin;S. Lindberg;M. Allan
通讯作者：
M. Gustin;S. Lindberg;M. Allan
影响因子：
--
作者：
Xinbin Feng;Shaofeng Wang;G. Qiu;Yamin Hou;Shunlin Tang
通讯作者：
Xinbin Feng;Shaofeng Wang;G. Qiu;Yamin Hou;Shunlin Tang
DOI：
10.1007/978-94-011-0153-0_41
发表时间：
1995-02
期刊：
Water, Air, and Soil Pollution
影响因子：
--
作者：
P. Hanson;S. Lindberg;T. A. Tabberer;J. Owens;K. Kim
通讯作者：
P. Hanson;S. Lindberg;T. A. Tabberer;J. Owens;K. Kim