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Updated: May 28, 2026
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A Study of the Complexation of Mercury(II) with Dicysteinyl Tetrapeptides by Electrospray Ionization Mass Spectrometry
Published on: January 8, 2016
La composición de los principales elementos de la superficie de Mercurio de la espectrometría de rayos X de MESSENGER
Larry R Nittler1, Richard D Starr, Shoshana Z Weider
1Department of Terrestrial Magnetism, Carnegie Institution of Washington, Washington, DC 20015, USA. lnittler@ciw.edu
Science (New York, N.Y.)
|October 1, 2011
Resumen
Mercurio Mercurio Mercurio Mercurio es Mercurio.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- La geoquímica es la geoquímica.
- La astroquímica es astroquímica.
Sus antecedentes:
- La composición de la superficie de Mercurio es en gran parte desconocida.
- Comprender la composición de Mercurio proporciona información sobre la formación de los planetas terrestres.
Objetivo del estudio:
- Para analizar la composición de la superficie de Mercurio utilizando datos de fluorescencia de rayos X.
- Para comparar la composición de Mercurio con otros planetas terrestres y restringir su historia de formación.
Principales métodos:
- Análisis de espectros de fluorescencia de rayos X obtenidos por la nave espacial MESSENGER.
- Comparación de las relaciones elementales (Mg/Si, Al/Si, Ca/Si, Fe, S, Ti) con los modelos de las costras planetarias y los materiales meteoríticos.
Principales resultados:
- La superficie de Mercurio tiene altas proporciones de Mg/Si y bajas proporciones de Al/Si y Ca/Si, a diferencia de una corteza lunar rica en feldespato.
- La abundancia de azufre es al menos 10 veces mayor que en la Tierra o la Luna.
- Las abundancias de hierro y titanio de baja superficie no admiten óxidos opacos como los principales contribuyentes a la reflectancia de la superficie.
Conclusiones:
- La composición de la superficie de Mercurio sugiere la formación de materiales altamente reducidos, posiblemente condritas de enstatita o polvo anidro cometario.
- La corteza del planeta no es rica en feldespato como la de la Luna.
- La composición desafía los modelos que se basan en óxidos opacos para la baja reflectancia de Mercurio.
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