Mercury enrichment in coal fire sponge in Wuda coalfield, Inner Mongolia of China
Mercury enrichment in coal fire sponge in Wuda coalfield, Inner Mongolia of China
复制标题
内蒙古乌达煤田煤火海绵中汞富集
DOI：
10.1016/j.coal.2018.03.006
复制
发表时间：
2018-05
影响因子：
5.6
通讯作者：
ong
中科院分区：
文献类型：
--
作者：
Liang Yanci;Zhu Shuquan;Liang H;ong
煤火海绵（CFS）是在全球煤火地区常见的煤火地表喷口处发现的一种海绵状污染土壤。采用Lumex RA-915+汞分析仪和PYRO-915热裂解池对内蒙古乌达煤田的海绵及相关土壤样品进行了测定。结果表明，CFS中汞含量高达13,967 ng/g（2653-38,470 ng/g，n= 73），约为当地土壤背景值（10 ng/g）的1400倍，已成为重汞污染的点源。CFS所在的8000 m2复垦区Hg含量也有2536 ng/g（1438-4313 ng/g，n= 20 × 5）的升高，这是CFS风化和扩散的结果，也已成为Hg污染的面源。这两个结果表明，CFS在煤田地面的形成已经改变了汞的环境归宿从进入大气中，本地停留，造成严重的地表大气，土壤和水体污染的煤田。此外，CFS也显示出潜在的地下煤火剩余物的一个明智的指标，在填海/燃煤处理区。
Coal fire sponge (CFS) is a type of sponge-like contaminated soil found at surface vents of coal fire commonly seen in global coal fire regions. The sponge and the related soil samples were collected in Wuda coalfield, Inner Mongolia of China, and measured by Lumex RA-915+ Mercury Analyzer with PYRO-915 pyrolysis cell. The results show that the mercury (Hg) concentration in CFS reaches 13,967 ng/g (2653–38,470 ng/g,n= 73), about 1400 times of local soil background level (10 ng/g), which has practically become a point source of heavy Hg pollution. The 8000 m2reclamation zone that CFS resides also shows elevated Hg level of 2536 ng/g (1438–4313 ng/g,n= 20 × 5), which is the result of weathering and dissemination of CFS, and also has become an area source of Hg pollution. Both findings suggest that the formation of CFS on coalfield ground surface has changed the environmental fate of Hg from entering atmosphere to staying locally, causing serious surface atmosphere, soil, and water body contamination in the coalfield. In addition, CFS also shows potential as a sensible indicator of underground coal fire remainder in reclamation/coal fire treatment areas.
登录
查看更多内容
影响因子：
5.6
作者：
Singh, Ashok K.;Singh, R. V. K.;Shukla, N. K.
通讯作者：
Shukla, N. K.
DOI：
10.1016/j.scitotenv.2010.08.046
发表时间：
2010-11
期刊：
The Science of the total environment
影响因子：
--
作者：
J. Ribeiro;D. Flores;C. Ward;L. Silva
通讯作者：
J. Ribeiro;D. Flores;C. Ward;L. Silva
影响因子：
5
作者：
Dastoor, AP;Larocque, Y
通讯作者：
Larocque, Y
影响因子：
--
作者：
C. Seigneur;P. Karamchandani;K. Lohman;K. Vijayaraghavan;R. Shia
通讯作者：
C. Seigneur;P. Karamchandani;K. Lohman;K. Vijayaraghavan;R. Shia
影响因子：
5.6
作者：
Hower, James C.;O'Keefe, Jennifer M. K.;Silva, Luis F. O.
通讯作者：
Silva, Luis F. O.