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Modelli di assorbimento e sequestro di Pb e Zn nei pesci
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ISBN10: 620981316X
ISBN13: 9786209813160
Publisher: Edizioni Sapienza
Published: Apr 14 2026
Pages: 72
Weight: 0.24
Height: 0.17 Width: 6.00 Depth: 9.00
Language: Italian
ISBN13: 9786209813160
Publisher: Edizioni Sapienza
Published: Apr 14 2026
Pages: 72
Weight: 0.24
Height: 0.17 Width: 6.00 Depth: 9.00
Language: Italian
I sistemi d'acqua dolce si stanno rapidamente inquinando con metalli pesanti come il piombo e lo zinco, rappresentando un rischio per la salute umana e per gli organismi acquatici. I pesci tendono a concentrare questi metalli nei propri tessuti a livelli cronici. Gli effetti tossici del piombo sono noti da secoli. Il piombo colpisce tutti gli apparati degli animali, compresi quelli nervoso, digestivo e circolatorio. Il piombo sostituisce metalli biologicamente importanti, come il calcio, lo zinco e il magnesio, interferendo con una serie di reazioni chimiche dell'organismo. Lo zinco è un oligoelemento essenziale per il corretto funzionamento dell'organismo. Livelli elevati di zinco nei sistemi acquatici possono essere dovuti allo scarico di effluenti liquidi, alla deposizione atmosferica, alla lisciviazione delle acque reflue domestiche e dei minerali contenenti metalli, agli insetticidi e ai processi di zincatura. Tuttavia, lo zinco può essere tossico in concentrazioni elevate. Pertanto, è diventato pertinente studiare l'entità della tossicità di questi due metalli e i loro modelli comparativi di assorbimento e sequestro in un sistema ittico.
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