万山汞矿区地表与大气界面间汞交换通量研究
Mercury Exchange Fluxes Between Air and Soil Interface over Different Type of Land in Wanshan Hg Mine Area
查看参考文献37篇
|
文摘
|
采用动力学通量箱与高时间分辨率大气自动测汞仪联用技术对万山汞矿区不同季节、不同地表与大气界面间汞交换通量和大气汞含量进行了测定．结果显示，受人为活动和地表强烈释汞的影响，万山地区大气汞含量高出背景区1～3个数量级，在冶炼厂附近平均值可达1101．8ng／m^3，最低平均值达17．8ng／m^3，显示万山汞矿区已遭受较严重的大气汞污染．万山汞矿区土壤与大气界面汞交换非常强烈，土壤向大气的释汞通量最高可达27827ng／（m^2·h），大气汞干沉降通量最高可达9434ng／（m^2·h）．万山汞矿区土壤与大气汞交换通量主要受光照强度、大气汞含量影响，光照在土壤释汞过程中起促进作用，而较高的大气汞含量则抑制了土壤向大气的释放，并导致大气汞强烈的干沉降，不同的地表类型对地表释汞影响较大，植被覆盖土壤释汞通量显著低于无植被覆盖地区，而冶炼后的矿渣堆则成为大气汞的净源。 |
|
其他语种文摘
|
Air/soil Hg exchange fluxes were measured using field chamber-automated air mercury analyzer method over different land in Wanshan Hg mine area in two seasons. The results showed that the air/soil Hg exchange fluxes were very strong. The highest Hg emission flux from soil was 27 827 ng/（m^2· h）, the highest Hg deposition flux from the atmosphere was 9 434 ng/（m^2· h）. Because of Hg emission from anthropogenic activities and natural lands, the Hg concentrations in air in Wanshan Hg mine area are 1 -3 orders of magnitude greater than background area. The highest average Hg concentration in air reached 1 101.8 ng/m^3, and the lowest average Hg concentration in air still reached 17.8 ng/m^3. These indicated that the atmosphere was polluted seriously in Wanshan Hg mine area. The Hg exchange fluxes are influenced by solar irradiation and the Hg concentrations in air. The solar irradiation accelerates the Hg emission from soil. Conversely, the Hg concentration in air restrained the Hg emission from soil, and even leads the Hg concentration depositing to soil surface. The Hg emission fluxes from uncovered soil are higher than that from covered soil by vegetations significantly. And the slag becomes net atmospheric Hg source. |
|
来源
|
环境科学
,2006,27(8):1487-1494 【核心库】
|
|
关键词
|
土壤
;
大气
;
汞交换通量
;
影响因素
;
万山汞矿区
|
|
地址
|
中国科学院地球化学研究所, 贵阳, 550002
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
0250-3301 |
|
学科
|
环境污染及其防治 |
|
基金
|
中国科学院知识创新工程项目
;
国家自然科学基金项目
|
|
文献收藏号
|
CSCD:2477460
|
参考文献 共
37
共2页
|
|
1.
Schroeder W H. Atmospheric mercury-an overview.
Atmospheric Environment,1998,32:809-822
|
被引
146
次
|
|
|
|
|
2.
Fitzgerald W F. Is mercury increasing in the atmosphere?The need for an atmospheric mercury network(AMNET).
Water Air and Soil Pollution,1995,80:245-254
|
被引
9
次
|
|
|
|
|
3.
Mason R. The biogeochemical cycling of elemental mercury:anthropogenic influences.
Geochim Cosmochim Acta,1994,58:3191-3198
|
被引
62
次
|
|
|
|
|
4.
Rytuba J J. Mercury from mineral deposits and potential environment impact.
Environment Geology,2003,43:326-338
|
被引
17
次
|
|
|
|
|
5.
Hall B. The gas oxidation of elemental mercury by ozone.
Water,Air,and Soil Pollution,1995,80:301-315
|
被引
20
次
|
|
|
|
|
6.
Schlüter K.
Environmental Geology,2000,39:249-271
|
被引
2
次
|
|
|
|
|
7.
Rasmussen P E. Current methods of estimating mercury fluxes in remote area.
Environ Sci Technol,1994,28:2233-2241
|
被引
7
次
|
|
|
|
|
8.
Gustin M S. Are mercury emissions from geologic sources significant?A status report.
The Science of the Total Environment,2003,304:153-167
|
被引
20
次
|
|
|
|
|
9.
Gustin M S. Nevada STORMS project:Measurement of mercury emission from naturally enriched surfaces.
Journal of Geophysical ResearchAtmosphere,1999,104:21831-21844
|
被引
10
次
|
|
|
|
|
10.
Ferrara R. Atmospheric mercury concentrations and fluxes in the Almadén district(Spain).
Atmospheric Environment,1998,32:3897-3904
|
被引
11
次
|
|
|
|
|
11.
Gustin M S. Atmospheric mercury concentrations associated with geologically and anthropogenically enriched sites in central western Nevada.
Environ Sci Technol,1996,30:2572-2579
|
被引
9
次
|
|
|
|
|
12.
Ferrara R. Atmospheric mercury sources in the Mt.
Amiata area,1998,213:13-23
|
被引
2
次
|
|
|
|
|
13.
Engle M A. Quantifying natural source mercury emission from the Ivanhoe Mining District northcentral Nevada USA.
Atmospheric Environment,2001,35:3987-3997
|
被引
17
次
|
|
|
|
|
14.
Gustin M S. Atmospheric mercury emissions from mine wastes and surrounding geologically enriched terrains.
Environmental Geology,2003,43:339-351
|
被引
9
次
|
|
|
|
|
15.
Tan H. Atmospheric mercury deposition in Guizhou China.
Sci Total Environ,2000,259:223-230
|
被引
16
次
|
|
|
|
|
16.
Xiao Z F. Atmospheric mercury deposition on Fanjing Mountain Nature Reserve Guizhou China.
Chemosphere,1998,36:2191-2200
|
被引
6
次
|
|
|
|
|
17.
Horvat M. Total mercury methylmercury and selenium in mercury polluted areas in the province Guizhou China.
Sci Total Environ,2003,304:231-256
|
被引
104
次
|
|
|
|
|
18.
Feng X. Distribution and speciation of mercury in surface waters in mercury mining areas in Wanshan Southwestern China.
J Phys Ⅳ,2003,107:455-458
|
被引
6
次
|
|
|
|
|
19.
Qiu G. Mercury and methylmercury in riparian soil sediments mine-waste calcines and moss from abandoned Hg mines in east Guizhou province southwestern China.
Applied Geochemistry,2005,20:627-638
|
被引
26
次
|
|
|
|
|
20.
冯新斌. 土壤挥发性汞释放通量的研究.
环境科学,1996,17(2):20-25
|
被引
32
次
|
|
|
|
|
了解气象卫星更多信息，请访问