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Un cocktail di pesticidi sta inquinando fiumi e torrenti svizzeri. Un nuovo studio nazionale ha identificato 135 pesticidi in cinque corsi d’acqua. Le concentrazioni di 23 di questi prodotti rappresentano addirittura un rischio per pesci, larve di insetti e altri organismi.
Questi risultati sono il contenuto di tre studi specifici dell’Agenzia nazionale di monitoraggio della qualità delle acque superficiali (NAWA). Gli studi sono stati pubblicati giovedì sulla rivista “Aqua & Gas”.
I 23 pesticidi (inclusi insetticidi molto potenti) le cui concentrazioni sono pericolose per gli organismi acquatici, hanno superato i criteri di qualità ecotossicologica fino a dieci volte, e in alcuni casi fino a cento volte, per diverse settimane. L’Ordinanza sulla protezione delle acque stabilisce valori limite ecotossicologici solo per 19 pesticidi.
https://rsi.cue.rsi.ch/info/dialogo/Interrotto-il-grande-studio-svizzero-sulla-salute--3081476.html
Grigionisera del 14.08.24, il servizio di Patrick Colombo
RSI Info 14.08.2024, 19:46
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