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- Title
CONTAMINAÇÃO POR METAIS PESADOS EM ÁREAS AGRÍCOLAS NO ESTADO DO TOCANTINS.
- Authors
Ribeiro Ramos, Michele; Ferreira De Abreu, Mônica; Vitor De Medeiros Guizzo, João; Gonçalves Cordeiro, Divonzil; Farias Ferreira, Phillipe
- Abstract
The present work consisted in the collection of soils samples for the analysis and description of heavy metals values in agricultural areas of some municipalities in the state of Tocantins. The purpose is to make comparisons with the Reference Values established for the states of São Paulo (SP) and Minas Gerais (MG), once, there is no reference values do exist for the state of Tocantins. Soil samples were collected from 27 agricultural areas, and submitted to the EPA3051 digestion method, proposed by the Environmental Protection Agency (EPA). The soils samples showed different levels of heavy metal concentration, with arsenic (As), mercury (Hg) and selenium (Se) being more constant. There has been no levels of heavy metals close to the Agricultural Research Values, only a few elements exceeded the limit of Prevention Values and the Quality Reference Values (QRV) proposed for the states of SP, as well as for the QRV established for the areas in the state of MG. These concentrations, however, pose no risk for soils contamination.
- Publication
Tecno-Lógica, 2020, Vol 24, Issue 2, p166
- ISSN
1982-6753
- Publication type
Article
- DOI
10.17058/tecnolog.v24i2.14845