TY - JOUR

T1 - Development and application of a laboratory flux measurement system (LFMS) for the investigation of the kinetics of mercury emissions from soils

AU - Bahlmann, Enno

AU - Ebinghaus, Ralf

AU - Ruck, Wolfgang

N1 - Titel d. Ausg.: Mercury cycling in contaminated tropical non-marine ecosystems

PY - 2006/10/1

Y1 - 2006/10/1

N2 - 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.

AB - 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.

KW - Chemistry

KW - Laboratory flux chamber

KW - Air/surface exchange

KW - Soil temperature

KW - Solar radiation

UR - http://www.scopus.com/inward/record.url?scp=33748255911&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/51597eec-a325-3cba-8cd7-e55bfb3ade0c/

U2 - 10.1016/j.jenvman.2005.09.022

DO - 10.1016/j.jenvman.2005.09.022

M3 - Journal articles

C2 - 16831509

VL - 81

SP - 114

EP - 125

JO - Journal of Environmental Management

JF - Journal of Environmental Management

SN - 0301-4797

IS - 2

ER -