Merkel, BJ; Kummer, AS; Planer-Friedrich, B; Pohl, T; Schipek, M: Development of a Gas Sampling Technique for Determining Trace Elements in Submarine Volcanic Exhalations, Procedia Earth and Planetary Science, 4, 50-56 (2011), doi:

Panarea is a submarine volcanic caldera between the active volcanoes Stromboli and Vulcano, Aeolian Islands, Italy. Many locations within the caldera at a water depth between 10 and 30 m are characterized by emissions of hot water (partly boiling) and gases (fumaroles). The fumaroles´ gas consists mainly of CO2 (96 to 99.5%) with H2S being the second most abundant component. To investigate trace gases and in particular aerosols, volatile metals, and metalloids like arsenic a technique was used which allows sampling tens and even hundreds of litres of gas. The sampling system is rather simple: a stainless steel funnel, a 100 m long PE hose with an inner diameter of 4 mm and a gas bag (10 to 80 litres). After sampling, the gas is pumped into a PTFE washing bottle containing NaOCl in supra pure water which is effectively oxidizing organic compounds like methylated metals, other reduced species, and aerosols. Determination of trace elements by ICP-MS follows. First results show a huge variety of elements present in the submarine volcanic gases and aerosols of submarine gas emissions at Panarea.

Upcoming ...

BayCEER Colloquium:
Th. 2017-10-26
Electrical imaging of subsurface nano- and micro-scale particle injections for in situ groundwater remediation
Ökologisch-Botanischer Garten:
Th. 2017-10-26
Blumen.Berge.Erlebtes: Finissage
Su. 2017-11-05
Eiserne Reserve: Pflanzen mit Wintersteher-Früchten
Su. 2017-11-05
Leibniz, die Welt und wir - Malerei, Lithografie, Installation
Su. 2017-11-12
Unwiderstehlich: BlütendüftVortrag: Wild- und Nutzpflanzen
Weather research site
Niederschlag: 0.0 mm/24h
Sonnenschein: <1 h/d

Globalstrahlung: 24 W/m²
Lufttemperatur: 4.0 °C
Niederschlag: 1.2 mm/24h
Sonnenschein: <1 h/d
Wind (Höhe 32m): 8.7 km/h
Wind (Max.): 25.6 km/h