RT Conference Proceedings
T1 Considerations on the formation mechanisms of emitting species from organic and carbon-containing inorganic compounds in CO2 atmosphere using LIBS
A1 Cabalín-Robles, Luisa María
A1 Delgado-Pérez, Tomás
A1 García, Laura
A1 Lucena, Patricia
A1 Laserna-Vázquez, José Javier
K1 Química analítica
AB Integration of LIBS instruments in the rover used for planetary exploration in an attempt to get multi-elementalinformation from rocks, minerals, and soils is a reality. Its great effectiveness has been demonstrated in manyworks from the research teams participating in the mission Mars Science Laboratory (MSL). However, the detectionand discrimination by LIBS of organic compounds can be complex since, among other aspects; this technique isvery sensitive to environmental conditions, such as the atmosphere composition and pressure [1-3].The objective of this investigation is to assess the effect of the surrounding atmosphere (CO2) on the formation ofemitting species in laser-induced plasmas of C-containing compounds in order to identify the possible bothinorganic and organic sources. Moreover, the influence of molecular structures on the intensity of C, C2, CN, H, Nand O emissions has been analyzed (Fig. 1). Four organic compounds (adenine, glycine, pyrene, and urea) wereselected for their interest as possible indicators or precursors of life. A laboratory LIBS system coupled to apressure chamber for simulating Martian environment was used for the analysis of pellet-shaped samples.Formation pathways of species coexisting in the plasma plume (C, C2 and CN, mainly) generated in air and in CO2atmosphere have been considered. The ablation thresholds and the limits of detection of the organic molecules oninorganic matrices (CaCO3 and CaSO4 2H2O) have been established
YR 2019
FD 2019-09-19
LK https://hdl.handle.net/10630/18409
UL https://hdl.handle.net/10630/18409
LA eng
NO Universidad de Málaga. Campus de Excelencia Internacional Andalucia Tech.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 4 mar 2026