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Qualitative Characterization of the Aqueous Fraction from Hydrothermal Liquefaction of Algae Using 2D Gas Chromatography with Time-of-flight Mass Spectrometry
Published on: March 6, 2016
Compuestos orgánicos halogenados volátiles liberados al agua de mar por las macroalgas marinas templadas
Resumen
Las algas marinas liberan cantidades significativas de compuestos orgánicos halogenados volátiles, incluidos los compuestos bromados, en el agua de mar. Estos productos naturales pueden desempeñar un papel crucial en los ciclos atmosféricos de halógenos.
Área de la Ciencia:
- Química del medio ambiente Química del medio ambiente
- Biología Marina Biología Marina.
- Ciencias de la atmósfera Ciencias atmosféricas.
Sus antecedentes:
- Los compuestos orgánicos halogenados volátiles (COV) de los procesos industriales son contaminantes persistentes.
- Los VHOC pueden interrumpir los ciclos naturales de halógenos atmosféricos.
- Algunos VHOC, como los polibromometanos, son productos marinos naturales.
Objetivo del estudio:
- Para investigar la presencia y liberación de VHOCs por las macroalgas marinas templadas.
- Para determinar la contribución de las macroalgas a la carga atmosférica de halógenos.
Principales métodos:
- Análisis de compuestos volátiles dentro de varias especies de macroalgas marinas templadas.
- Cuantificación de las tasas de liberación de VHOC en el agua de mar.
Principales resultados:
- Las macroalgas templadas (algas marrones, verdes y rojas) contienen diversas VHOCs.
- Las algas liberan COV a tasas de nanogramos a microgramos por gramo de peso seco al día.
- Entre los compuestos identificados se encuentran los polibromometanos, los monohaluros de alquilo y los dihalidos.
Conclusiones:
- Las macroalgas marinas son fuentes significativas de VHOCs naturales.
- Las macroalgas pueden ser un contribuyente clave de bromo a la atmósfera.
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