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Disposal of dredged sediments in tropical soils: ecotoxicological effects on ea...
Cesar, Ricardo; Natal-da-Luz, Tiago; Sousa, José Paulo; Colonese, Juan; Bidonne, Edison; Castilhos, Zuleica; Egler, Silvia; Polivanov, HelenaThe upper limit concentrations of metals established by international legislations for dredged sediment disposal and soil quality do not take into consideration the properties of tropical soils (generally submitted to more intense weathering processes) on metal availability and ecotoxicity. Aiming to perform an evaluation on the suitability of these threshold values in tropical regions, the ecotoxicity of metal...
Environmental risk increase due to heavy metal contamination caused by a copper...
BIDONE,EDISON D.; LAYBAUER,LUCIANO; CASTILHOS,ZULEICA C.; MADDOCK,JOHN L.The Camaquã Copper Mines (CCM) were the main sulphide deposit in Southern Brazil and have been in operation from last century to 1996. To evaluate water contamination and environmental risk increase by heavy metals from mining operations, two points on the João Dias Creek were sampled (Station 1, background area and Station 2, contaminated area). Mining activity increased the natural weakly heavy metal fluxes b...
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