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O acidente com o césio-137, ocorrido em Goiânia em 13 de setembro de 1987, foi o maior desastre radioativo da história do Brasil e um dos mais graves no mundo. Ele começou com o descarte inadequado de um aparelho de radioterapia abandonado, cuja cápsula de chumbo contendo o pó radioativo foi violada. A tragédia resultou na contaminação significativa de 249 pessoas e no monitoramento de mais de 110 mil. Muitas famílias foram obrigadas a deixar suas casas, e vidas foram perdidas. #brasil
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Césio-137, césio-137, ou radiocésio, é um isótopo radioativo de césio que é formado como um dos produtos de fissão mais comuns pela fissão nuclear do urânio-235 e outros isótopos fissionáveis ​​em reatores nucleares e armas nucleares. Vestígios também se originam da fissão espontânea do urânio-238.
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