Spatial analysis and hazard assessment of mercury in soil around the coal-fired power plant: a case study from the city of Baoji, China |
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| Authors: | Xinwei Lu Xiaopeng Yang and Lingqing Wang |
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| Institution: | (1) Department of Mathematics, Physics and Engineering, Shaanxi Institute of Education, Xi’an, 710061, China;(2) College of Tourism and Environment, Shaanxi Normal University, Xi’an, 710062, China |
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| 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.
An erratum to this article can be found at |
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| Keywords: | Coal-fired plant Soil Mercury Spatial analysis Hazard assessment Geostatistics |
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