Inicio > Matemáticas y ciencia > Biologia, ciencias de la vida > Botánica y ciencias de las plantas > Efeito das emissões veiculares em Alstonia scholaris R.Br.
Efeito das emissões veiculares em Alstonia scholaris R.Br.

Efeito das emissões veiculares em Alstonia scholaris R.Br.

Quazi Mohammed Imranul Haq / Shahid Umar

41,38 €
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Editorial:
KS OmniScriptum Publishing
Año de edición:
2025
Materia
Botánica y ciencias de las plantas
ISBN:
9786208629830
41,38 €
IVA incluido
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O termo poluição refere-se a qualquer alteração indesejável nas caraterísticas físicas, químicas e biológicas do ar, da água e do solo, que pode afetar negativamente a nossa vida. A poluição atmosférica surgiu como uma das principais ameaças ambientais dos tempos modernos. Os principais contaminantes contidos nos gases de escape dos automóveis são o CO, os hidrocarbonetos, os NOx e as partículas. A quantidade de contaminantes no escape depende predominantemente da relação ar/combustível. A entrada mais direta de poluentes gasosos nas plantas é através dos estomas. Os poluentes gasosos do ar, depois de entrarem no tecido vegetal, podem dissolver-se na água intercelular. O ácido resultante (se for um poluente ácido) ataca então a estrutura celular da folha. É por isso que os poluentes atmosféricos solúveis precoces, como o SO2, o cloridrato e os ácidos fluorídricos, etc., são mais tóxicos. Na presente investigação, verificou-se uma alteração moderada a forte na composição elementar, bem como nos parâmetros bioquímicos da Alstonia scholaris que cresce na proximidade de poluição veicular pesada, em comparação com o local de referência.

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