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Liberación de partículas que contienen metales de la vegetación a la atmósfera
Science (New York, N.Y.)
|February 11, 1977
Resumen
Las plantas liberan zinc y plomo a la atmósfera a través de sus superficies. La liberación de zinc es significativamente mayor que la liberación de plomo, lo que afecta la composición metálica atmosférica.
Área de la Ciencia:
- Ciencias ambientales Ciencias ambientales.
- Biogeoquímica La biogeoquímica es la bioquímica.
- Química de la atmósfera La química de la atmósfera
Sus antecedentes:
- Las plantas pueden interactuar e influir en la composición atmosférica.
- Los metales traza como el zinc y el plomo están presentes en el medio ambiente y pueden ser absorbidos por las plantas.
Objetivo del estudio:
- Para investigar la liberación de zinc y plomo de las plantas a la atmósfera.
- Para entender los factores que influyen en este mecanismo de liberación.
Principales métodos:
- Estudios de laboratorio utilizando radioisótopos con plantas de guisantes y plántulas de pino.
- Estudios de campo en parcelas radiomarcadas con varias hierbas y plantas herbáceas.
Principales resultados:
- Los estudios de laboratorio y de campo confirmaron la liberación atmosférica de zinc y plomo de las plantas.
- La liberación está asociada con las superficies de las plantas e influenciada por las condiciones de crecimiento, la concentración elemental y el clima.
- Cuando las concentraciones de zinc y plomo son iguales, la liberación de zinc es aproximadamente 100 veces mayor que la liberación de plomo.
Conclusiones:
- La liberación de metales traza mediada por las plantas es un factor significativo en la composición de partículas atmosféricas.
- Las diferentes tasas de liberación de zinc y plomo tienen implicaciones para la comprensión del ciclo atmosférico de los metales.
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