Jump to main content
Jump to site search

Volume 147, 2010
Previous Article Next Article

The fate of aerosols on the surface of Titan

Author affiliations

Abstract

A laboratory study based on the chemical transformation that Titan's aerosol analogues suffer when placed under putative surface conditions of the satellite was performed. In order to understand the role that aqueous ammonia may play on the chemical transformation of atmospheric aerosols once they reach the surface, we synthesized laboratory analogues of Titan's aerosols from an N2 : CH4 (98 : 2) mixture irradiated at low temperatures under a continuous flow regime by a cold plasma discharge of 180 W. The analogues were recovered, partitioned in several 10.0 mg samples and placed inside different ammonia concentrations during 10 weeks at temperatures as low as those reported for Titan's surface. After a derivatization process performed to the aerosols' refractory phase with MTBSTFA in DMF, the products were identified and quantified using a GC-MS system. We found derived residues related to amino acids as well as urea. The simplest amino acids aminoethanoic acid (glycine) and 2-aminopropanoic acid (alanine) as well as diaminomethanal (urea), are found regardless of the ammonia concentration and temperature value to which the aerosol analogues were exposed. Our results have important astrobiological implications to Titan's environment particularly if the existence of the suggested subsurface waterammonia mixture and its deposition on the satellite's surface is validated.

Back to tab navigation

Publication details

The article was received on 09 Mar 2010, accepted on 21 Apr 2010 and first published on 03 Aug 2010


Article type: Paper
DOI: 10.1039/C003925J
Faraday Discuss., 2010,147, 419-427

  •   Request permissions

    The fate of aerosols on the surface of Titan

    S. I. Ramírez, P. Coll, A. Buch, C. Brassé, O. Poch and F. Raulin, Faraday Discuss., 2010, 147, 419
    DOI: 10.1039/C003925J

Search articles by author

Spotlight

Advertisements