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- Title
Spatial analysis and hazard assessment of mercury in soil around the coal-fired power plant: a case study from the city of Baoji, China.
- Authors
Yang, Xiaopeng; Wang, Lingqing
- Abstract
Based on systematic sampling of soil around the coal-fired power plant (CFPP), the content of Hg was determined, using atomic fluorescence spectrometry. The result shows that the content of Hg in soil is different horizontally and vertically, ranges from 0.137 to 2.105 mg/kg (the average value is 0.606 mg/kg) and is more than the average content of Hg in Shaanxi, Chinese and world soil. In this study, spatial distribution and hazard assessment of mercury in soils around a CFPP were investigated using statistics, geostatistics and geographic information system (GIS) techniques. Ordinary kriging was carried out to map the spatial patterns of mercury and disjunctive kriging was used to quantify the probability of the Hg concentration higher than the threshold. The maps show that the spatial variability of the Hg concentration in soils was apparent. These results of this study could provide valuable information for risk assessment of environmental Hg pollution and decision support.
- Subjects
BAOJI (Shaanxi Sheng, China); CHINA; MERCURY in soils; COAL-fired power plants; FLUORESCENCE spectroscopy; GEOGRAPHIC information systems; SPATIAL data infrastructures; KRIGING; GEOLOGICAL statistics; ENVIRONMENTAL risk assessment
- Publication
Environmental Geology, 2007, Vol 53, Issue 7, p1381
- ISSN
0943-0105
- Publication type
Article
- DOI
10.1007/s00254-007-0747-1