Skip to main content
SearchLoginLogin or Signup

Toward Exploring Venusian Aerosols and Gases: Initial Laboratory Results of the GAMS Mass Spectrometer

Presentation #502.05 in the session Venus I (Oral Presentation)

Published onOct 23, 2023
Toward Exploring Venusian Aerosols and Gases: Initial Laboratory Results of the GAMS Mass Spectrometer

We present recent laboratory results pertaining to the development of a lightweight, high -resolution mass spectrometer for the in-situ investigation of Venusian aerosols and gases from aerial platforms and probes. Known as the Gas and Aerosol Mass Spectrometer (GAMS), the instrument uses at its heart the JPL Quadrupole Ion Trap Mass Spectrometer (QIT-MS; Simcic et al., 2021, Space Sci. Rev. 217, 13; Baines et al., 2021, Astrobiology 21 (10) 1316-1323; Waller et al., 2019, Astrobiology 19 (10) 1196-1210; Avice et al., 2019, J. Analytic Atomic Spectr. 34, 104-1170). Here, we present continuous measurements performed over 90 days of electron impact ionization and fragmentation patterns of concentrated sulfuric acid to demonstrate the ruggedized design of the QIT-MS sensor for GAMS, including its capability to withstand long-term exposure to sulfuric acid vapors. Elution of 98% concentrated sulfuric acid liquid through the heated capillary into the QIT-MS sensor in an ultra-high vacuum provided a steady partial pressure of sulfuric acidic vapor to be analyzed. Results show the distinct shifts in vapor equilibrium due to the thermal decomposition of H2SO4 and the need for systematic investigation of fragmentation patterns at temperatures relevant to in-situ studies of Venusian aerosols.

Comments
0
comment
No comments here