Can H2 clump discriminate the H2 source ? - Chairman: Dariusz STRAPOC
ConférenceNew tools
2023-11-27 | 05:00 PM - 05:15 PM (GMT+08:00) Perth| Live room
Informations
Dan Lévy*1, Pierre Cartigny1, Jabrane Labidi1, Isabelle Moretti2, Dariusz Strapoc3, Isabelle Le Nir3, Isabelle Martinez1
1Institut Physique du Globe de Paris, Paris, France, *contact: dlevy@ipgp.fr
2Institut des Sciences de la Terre de Paris, Paris, France
3SLB, Clamart, France
2Institut des Sciences de la Terre de Paris, Paris, France
3SLB, Clamart, France
Natural hydrogen has several origins: hydrothermal alteration, radiolysis of water, late maturation of organic matter or microbiology. Even if those processes are the subject of many studies, it is still challenging to associate a molecule of H2 to a specific origin.
One of the methods usually performed to constrain the origin of H2 is to measure its bulk hydrogen isotopic composition. However, it is mainly used to constrain whether a system is at equilibrium or not or to distinguish low temperature H2 to high temperature H2. Therefore, this H isotopic signature does not lead to distinguish one type of H2 from another.
Here, we use a new technique to trace the origin of natural hydrogen: the measurement of H2 clumped isotopes (HH, HD, DD) on MAT253-ULTRA that was developed by Popa et al. [1] and first used on natural samples by Mangenot et al. [2]. The methodology of the measurement of H2 clumped isotopes will be presented before showing new results.
[1] Popa, Paul, Janssen, and Röckmann (2019), Rapid Communications in Mass Spectrometry 33, 239–251.
[2] Mangenot, Xie, Crémière, Giunta, Lilley, Sissmann, et al. (2023), Chemical Geology 621, 121278.
[2] Mangenot, Xie, Crémière, Giunta, Lilley, Sissmann, et al. (2023), Chemical Geology 621, 121278.
