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Analisi dei metalli tossici nel pesce

Analisi dei metalli tossici nel pesce

Alcides W. S. Guarino / Fábio Merçon / Yuri K. Santos

59,05 €
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Editorial:
KS OmniScriptum Publishing
Año de edición:
2025
Materia
Química
ISBN:
9786208596996
59,05 €
IVA incluido
Disponible

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Gli oligoelementi vengono scaricati continuamente nei fiumi, un fatto che causa gravi problemi a causa della loro tossicità, lunga persistenza, bioaccumulo e biomagnificazione nella catena alimentare. Il sistema lagunare Tijuca-Jacarepaguá-Marapendi riceve un enorme apporto di nutrienti e inquinanti a causa dell’impatto antropico sui suoi fiumi. L’obiettivo principale di questo studio è stato quello di valutare i livelli di rame, zinco, piombo e alluminio nel muscolo e nei visceri della specie Sardinella brasiliensis (sardina), che abita lo sbocco del canale Sernambetiba, Barra da Tijuca, Rio de Janeiro (RJ). Tra i campioni, il 56,8% presentava valori superiori al limite stabilito per il consumo umano dalla legislazione brasiliana per il piombo. Gli oligoelementi hanno mostrato tendenze di accumulo diverse a seconda della posizione (muscolo o visceri). Le concentrazioni di metalli nel muscolo erano più basse rispetto ai visceri. I valori riscontrati dovrebbero servire da monito per la contaminazione della popolazione di Sardinella brasiliensis che abita lo sbocco del canale di Sernambetiba. Si è concluso che la concentrazione di piombo nei pesci era superiore ai limiti consentiti per il consumo umano e che la regione è colpita.

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