Development and application of a laboratory flux measurement system (LFMS) for the investigation of the kinetics of mercury emissions from soils

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Authors

Recent measurements at different locations suggest that the emission of mercury from soils may play a more pronounced role in the global mercury cycle as suggested by global emission inventories and global mercury cycling models. For up scaling and modelling of mercury emissions from soils a comprehensive assessment of the processes controlling the emission of mercury from soils is imperative. We have developed a laboratory flux measurement system (LFMS) to study the effect of major environmental variables on the emission of mercury under controlled conditions. We have investigated the effects of turbulent mixing, soil temperature and solar radiation on the emission of mercury from soils. The emission of mercury from soils is constant over time under constant experimental conditions. The response of the mercury emission flux to variations of the atmospheric transfer parameters such as turbulence requires a rapid adjustment of the equilibrium that controls the Hg degrees concentration in the soil air. It has been shown that the light-induced flux is independent of the soil temperature and shows a strong spectral response to UV-B. (c) 2006 Published by Elsevier Ltd.
Original languageEnglish
JournalJournal of Environmental Management
Volume81
Issue number2
Pages (from-to)114-125
Number of pages12
ISSN0301-4797
DOIs
Publication statusPublished - 01.10.2006

Bibliographical note

Titel d. Ausg.: Mercury cycling in contaminated tropical non-marine ecosystems

    Research areas

  • Chemistry - Laboratory flux chamber, Air/surface exchange, Soil temperature, Solar radiation

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