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Mercury Fluxes and Reductive Processes in the Alps

English title Mercury Fluxes and Reductive Processes in the Alps
Applicant Alewell Christine
Number 105308
Funding scheme Project funding (Div. I-III)
Research institution Institut für Umweltgeowissenschaften Universität Basel
Institution of higher education University of Basel - BS
Main discipline Other disciplines of Environmental Sciences
Start/End 01.11.2004 - 31.10.2006
Approved amount 153'815.00
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Keywords (6)

MERCURY POLLUTION; ECOSYSTEM FLUXES; ELEMENTAL MERCURY EMISSIONS; ALPINE GRASSLANDS; REDUCTIVE PROCESSES; STABLE ISOTOPES

Lay Summary (English)

Lead
Lay summary
The objective of this project was to investigate the exchange of elemental mercury (Hg0) be-tween the atmosphere and biosphere under various environmental conditions. During con-trolled laboratory incubation studies we investigated the effects of different soil conditions. Re-sults showed that redox potential didn’t alter Hg0 fluxes, but enhanced microbiological activity increased Hg0 evasion. We concluded that sudden environmental changes affect Hg0 exchange rates considerably. In the second part of our project we focused our research on the in-situ esti-mation of Hg0 exchange rates at three grassland sites in Switzerland and Austria. Different micrometeorological methods were applied and first results indicate slight nocturnal deposition of Hg0. As vegetation seems to have a significant influence on Hg0 exchange, we currently per-form incubation experiments with vegetated soil samples. These are part of the follow up pro-ject 200020-113327.
Direct link to Lay Summary Last update: 21.02.2013

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Associated projects

Number Title Start Funding scheme
113327 Mercury fluxes and reductive processes in the Alps 01.11.2006 Project funding (Div. I-III)

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