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A Simple Approach for Measuring Emission Patterns of Vapor Phase Mercury under Temperature-Controlled Conditions from Soil
Joint Authors
Jung, Myung-Chae
Brown, Richard J. C.
Oh, Jong-Min
Kim, Ki-Hyun
Yoon, Hye-On
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-08-13
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Natural & Life Sciences (Multidisciplinary)
Medicine
Information Technology and Computer Science
Abstract EN
In an effort to study the possible effects of climate change on the behavior of atmospheric mercury (Hg), we built a temperature–controlled microchamber system to measure its emission from top soils.
To this end, mercury vapour emission rates were investigated in the laboratory using top soil samples collected from an urban area.
The emissions of Hg, when measured as a function of soil temperature (from ambient levels up to 70°C at increments of 10°C), showed a positive correlation with rising temperature.
According to the continuous analyses of the Hg vapor given off by the identical soil samples, evasion rate diminished noticeably with increasing number of repetitions.
The experimental results, if examined in terms of activation energy (Ea), showed highly contrasting patterns between the single and repetitive runs.
Although the results of the former exhibited Ea values smaller than the vaporization energy of Hg (i.e., <14 Kcal mol−1), those of the latter increased systematically with increasing number of repetitions.
As such, it is proposed that changes in the magnitude of Ea values can be used as a highly sensitive criterion to discriminate the important role of vaporization from other diverse (biotic/abiotic) processes occurring in the soil layer.
American Psychological Association (APA)
Kim, Ki-Hyun& Yoon, Hye-On& Jung, Myung-Chae& Oh, Jong-Min& Brown, Richard J. C.. 2012. A Simple Approach for Measuring Emission Patterns of Vapor Phase Mercury under Temperature-Controlled Conditions from Soil. The Scientific World Journal،Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-509914
Modern Language Association (MLA)
Kim, Ki-Hyun…[et al.]. A Simple Approach for Measuring Emission Patterns of Vapor Phase Mercury under Temperature-Controlled Conditions from Soil. The Scientific World Journal No. 2012 (2012), pp.1-8.
https://search.emarefa.net/detail/BIM-509914
American Medical Association (AMA)
Kim, Ki-Hyun& Yoon, Hye-On& Jung, Myung-Chae& Oh, Jong-Min& Brown, Richard J. C.. A Simple Approach for Measuring Emission Patterns of Vapor Phase Mercury under Temperature-Controlled Conditions from Soil. The Scientific World Journal. 2012. Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-509914
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-509914