Skip to Main content Skip to Navigation
Theses

Caractérisation de perfluorocarbones (CₓFᵧ, PFCs) par spectrométrie de masse et spectroscopie VUV

Abstract : Perfluorocarbons compounds have both hydrophobic and lipophobic properties. They have been manufactured since the 1950s, and widely used in many industrial applications. However, they are persistent, bioaccumulative compounds with long atmospheric lifetimes. They are considered to be potent greenhouse gases, and are supposed to be mainly degraded by photolysis in the upper atmosphere. A work of physicochemical characterization of two perfluorinated compounds was realized on the PFOA and PFOS. They have been found to be the final compounds of degradation of the majority of perfluororinated compounds. VUV spectroscopy and mass spectrometry experiences have been undertaken to identify their relaxation pathways after photoactivation. A methodology based on the coupling of synchrotron radiation and mass spectrometry was developed to perform absolute cross section measurements and was apply to the compounds of interest. These measurements have been used to determine their photolysis rates and atmospheric lifetimes according to the altitude.
Complete list of metadatas

https://tel.archives-ouvertes.fr/tel-02003271
Contributor : Abes Star :  Contact
Submitted on : Friday, February 1, 2019 - 11:16:29 AM
Last modification on : Tuesday, September 29, 2020 - 6:53:31 AM
Long-term archiving on: : Thursday, May 2, 2019 - 3:07:31 PM

File

73525_DOUIX_2018_archivage.pdf
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-02003271, version 1

Citation

Suzie Douix. Caractérisation de perfluorocarbones (CₓFᵧ, PFCs) par spectrométrie de masse et spectroscopie VUV. Chimie analytique. Université Paris Saclay (COmUE), 2018. Français. ⟨NNT : 2018SACLS523⟩. ⟨tel-02003271⟩

Share

Metrics

Record views

210

Files downloads

556