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Revista de la Sociedad Científica del Paraguay

Print version ISSN 0379-9123On-line version ISSN 2617-4731


FLORES, Franklin D.; DELGADO, Mirna  and  FACETTI-MASULLI, Juan F.. Bottom sediments from Tapiracuai and Cuarepotí Brooks. Rev. Soc. cient. Parag. [online]. 2018, vol.23, n.2, pp.251-262. ISSN 2617-4731.

Bottom sediments of water bodies constitute a reservoir for metal cations, molecules and other products that, over a short or long period of time, can become pollutants, with deleterious effects for the biota; the knowledge of its content is therefore very important. In this work, in the sediments of Tapiracuai and Cuarepoti Brooks are investigated elements of the 3d seriesthat bythe presence / action of unpaired electrons can originate reactions of free radicals, as well as others such as Cd and Pb of known toxicity. Their registered values are rather low. In consideration of possible adverse effects were used for comparison and analysis, multielement diagrams (aracnogramas) referred to the recommended values for the upper crust as well as sediments quality guidelines values. They indicate the current lack of potential risk due to such elements; they also show its usefulness to infer expeditiously, the existence of levels of undesirable effects for the biota.

Keywords : Bottom sediments; Tapiracuai; Cuarepoti; pollutants; 3d series; Upper Crust; sediments referencevalues.

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