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Authors: Aiuppa, A.*
Bagnato, E.*
Witt, M. L. I.*
Mather, T. A.*
Parello, F.*
Pyle, D. M.*
Martin, R. S.*
Title: Real-time simultaneous detection of volcanic Hg and SO2 at La Fossa Crater Vulcano (Aeolian Islands, Sicily)
Title of journal: Geophysical Research Letters
Series/Report no.: /34 (2007)
Publisher: American Geophysical Union
Issue Date: 2007
DOI: 10.1029/2007GL030762
Keywords: Mercury
Fumarolic condensates
Volcanic emissions
Abstract: Measuring Hg/SO2 ratios in volcanic emissions is essential for better apportioning the volcanic contribution to the global Hg atmospheric cycle. Here, we report the first real-time simultaneous measurement Hg and SO2 in a volcanic plume, based on Lumex and MultiGAS techniques, respectively. We demonstrate that the use of these novel techniques allows the measurements of Hg/SO2 ratios with a far better time resolution than possible with more conventional methods. The Hg/SO2 ratios in the plume of F0 fumarole on La Fossa Crater, Vulcano Island spanned an order of magnitude over a 30 minute monitoring period, but was on average in qualitative agreement with the Hg/SO2 ratio directly measured in the fumarole (mean plume and fumarole ratios being 1.09 x 10-6 and 2.9 x 10-6, respectively). The factor 2 difference between plume and fumarole compositions provides evidence for fast Hg chemical processing the plume.
Appears in Collections:04.08.06. Volcano monitoring
Papers Published / Papers in press

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