Jump to main content
US EPA
United States Environmental Protection Agency
Search
Search
Main menu
Environmental Topics
Laws & Regulations
About EPA
Health & Environmental Research Online (HERO)
Contact Us
Print
Feedback
Export to File
Search:
This record has one attached file:
Add More Files
Attach File(s):
Display Name for File*:
Save
Citation
Tags
HERO ID
6779402
Reference Type
Journal Article
Title
H2S fluxes from Mt. Etna, Stromboli, and Vulcano (Italy) and implications for the sulfur budget at volcanoes
Author(s)
Aiuppa, A; Inguaggiato, S; Mcgonigle, AJS; O'Dwyer, M; Oppenheimer, C; Padgett, MJ; Rouwet, D; Valenza, M; ,
Year
2005
Is Peer Reviewed?
Yes
Journal
Geochimica et Cosmochimica Acta
ISSN:
0016-7037
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Location
OXFORD
Page Numbers
1861-1871
DOI
10.1016/j.gca.2004.09.018
Web of Science Id
WOS:000228367200016
Abstract
We present here new measurements of sulfur dioxide and hydrogen sulfide emissions from Vulcano, Etna, and Stromboli (Italy), made by direct sampling at vents and by filter pack and ultraviolet spectroscopy in downwind plumes. Measurements at the F0 and FA fumaroles on Vulcano yielded SO2/H2S molar ratios of approximate to 0.38 and approximate to 1.4, respectively, from which we estimate an H2S flux of 6 to 9 t (.) d(-1) for the summit crater. For Mt. Etna and Stromboli, we found SO2/H2S molar ratios of approximate to 20 and approximate to 15, respectively, which combined with SO2 flux measurements, suggest H2S emission rates of 50 to 113 t (.) d(-1) and 4 to 8 t (.) d(-1), respectively. We observe that "source" and plume SO2/H2S ratios at Vulcano are similar, suggesting that hydrogen sulfide is essentially inert on timescales of seconds to minutes. This finding has important implications for estimates of volcanic total sulfur budget at volcanoes since most existing measurements do not account for H2S emission. Copyright (c) 2005 Elsevier Ltd.
Home
Learn about HERO
Using HERO
Search HERO
Projects in HERO
Risk Assessment
Transparency & Integrity