Aspects and environmental impacts of mining in the central region of the State of the Tocantins
Titel:
Aspects and environmental impacts of mining in the central region of the State of the Tocantins
Auteur:
Leonardo Ramos da Silveira Rose Mary Gondim Mendonça
Verschenen in:
Engenharia ambiental
Paginering:
Jaargang 6 (2009) nr. 2 pagina's 191-208
Jaar:
2009
Inhoud:
The use of mineral resources for the man is so old how much its history. The register of the activity human being searchs its initial references in the dependence of the man in relation to the mineral goods. A study of the quality of superficial waters it was carried through, in a mining company of crushed rock of granite in the central region of the state of the Tocantins. The results had shown a significant variation of the parameters throughout the six months of study. A characterization was carried through physicist-chemistry and biological (coliforms). The results showed a significant variation of the parameters sampled over six months of study, especially the temperature, which ranged from 22.6 oC to 35 °C, pH varying from 5.04 to 8.94, the electrical conductivity varying from 11.5 to 94.1 μS cm-1, the turbidity varying from 0.90 UNT to 461 UNT, and the total coliforms and thermotolerant, with presence in determined samples. These values found in the sampling demonstrate significant variation of the ambient quality of superficial waters in the area of direct influence of the company; action must be taken in the direction to diminish possible happened ambient impacts of the mining actions.Key-words: mining, waters quality, tracking.
Uitgever:
Environmental Engineering Course / UNIPINHAL (provided by DOAJ)
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