https://dx.doi.org/10.4322/sc.2012.010

 

La cromatografía de gases acoplada a espectrometría de masas como herramienta de alta selectividad para caracterizar fósiles químicos en el petróleo

Stashenko, Elena E.; Martínez, Jairo R.

Palavras-chave: Cromatografía de gases, GC-MS, espectrometría de masas tándem, SIM, MRM, biomarcadores.

Resumo: La determinación de fósiles químicos (biomarcadores) en el petróleo constituye un reto analítico formidable, porque requiere la detección y la cuantificación de moléculas específicas, presentes en cantidades a nivel de trazas, en mezclas de hidrocarburos altamente complejas. En este artículo, se resaltan algunos resultados de importancia para la geoquímica orgánica, que han sido posibles gracias al uso de la espectrometría de masas como sistema de detección, altamente sensible y selectivo, en conjunto con la alta resolución que alcanzan la cromatografía de gases monodimensional y la cromatografía de gases completa (GC × GC). Se han seleccionado ejemplos representativos de estudios recientes de biomarcadores en la geoquímica ambiental y en la geoquímica del petróleo.


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