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Sulfuro de carbonilo y disulfuro de carbono de las erupciones del Monte St. Helens
Science (New York, N.Y.)
|February 5, 1982
Resumen
La ceniza volcánica del Monte St. Helens liberó una cantidad significativa de sulfuro de carbonilo y gases disulfuro de carbono. Esto sugiere que los gases ricos en azufre se adsorben en las partículas de ceniza, llegando directamente a la estratosfera después de grandes erupciones.
Área de la Ciencia:
- La geoquímica es la geoquímica.
- Química de la atmósfera La química de la atmósfera
- Volcanología Volcanología.
Sus antecedentes:
- Se sabe que las erupciones volcánicas impactan en las capas de aerosoles estratosféricos.
- La capa de sulfato de Junge es un componente clave de la estratosfera.
- Los mecanismos precisos del transporte de azufre a la estratosfera después de la erupción requieren más aclaración.
Objetivo del estudio:
- Para investigar las propiedades de liberación de gases de las cenizas volcánicas a temperaturas ambientales.
- Para determinar si el sulfuro de carbonilo y el disulfuro de carbono se liberan de las cenizas del Monte St. Helens.
- Proponer un mecanismo para el transporte directo de azufre estratosférico a través de la ceniza volcánica.
Principales métodos:
- Análisis de los gases emitidos por la ceniza volcánica del Monte St. Helens.
- Experimentos a temperatura ambiente para medir la liberación de gases.
Principales resultados:
- Las cenizas de la erupción del Monte St. Helens de 1980 liberaron fácilmente cantidades significativas de sulfuro de carbonilo (COS) y disulfuro de carbono (CS2) a temperatura ambiente.
- Se observó que estos gases se adsorbían en las partículas de ceniza.
Conclusiones:
- El sulfuro de carbonilo y el disulfuro de carbono adsorbidos en las partículas de ceniza volcánica pueden ser transportados directamente a la estratosfera.
- Este mecanismo proporciona una vía para que el azufre mejore la capa de sulfato Junge después de grandes erupciones volcánicas.
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