Estimations of mercury fluxes emitted by Mount Etna Volcano |
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| Authors: | H Dedeurwaerder G Decadt W Baeyens |
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| Institution: | 1. Laboratorium voor Analytische Scheikunde (Dir. Prof. I. Elskens), Vrije Universiteit Brussel, Pleinlaan 2, 1050, Brussel, Belgium
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| Abstract: | A sampling and measuring device which enables the assessment of atmospheric particulate and gaseous mercury concentrations has been tested on Mount Etna Volcano. Particulate matter is collected on a Whatman GF/C of 1.0 µm pore-size, gaseous mercury species on a Au-column. The analysis is carried out in two steps: (1) the mercury species collected on the filter or the Au-column are transferred to a fixed analytical Au-column; (2) mercury liberated from this column during the second step is detected with a Mercury Vapour Monitor. Average concentrations of gaseous and particulate mercury in ambient sampling sites on Mount Etna are 3.8 ng m?3 and 0.49 ng m?3 respectively. Average concentrations of gaseous and particulate mercury in the plume of Bocca Nuova on Mount Etna are 15 ng m?3 and 24 ng m?3 respectively. An estimation of the total mercury discharge from Mount Etna amounts to 2.5 10?2 tons day?1. |
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