Environmental quality in headwaters tributary of Paraguay River under influence of agriculture and urbanization
DOI:
https://doi.org/10.6008/CBPC2179-6858.2018.008.0008Keywords:
Water resource, Sanitation, Pollution, Water quality indicesAbstract
The objective of this work was to investigate the environmental quality of a stream water, tributary of the right bank of the Paraguay River, in the urban perimeter of Barra do Bugres (MT) in the confrontation with sugarcane monoculture, in the southwest mesoregion. from Mato Grosso. A collection was carried out in April, in the lot, before the mouth of Lago Azul, which was cooled and preserved and later sent to a certified laboratory, where the concentration of Iron (Fe), Manganese (Mn) was determined. , Cadmium (Cd), Lead (Pb), Chromium (Cr), Nickel (Ni), Zinc (Zn), Dissolved Copper (Cu), Mercury (Hg) and Surfactants (Surf.). From the same sample, measurements were taken of Hydrogen Potential (pH), Dissolved Oxygen (DO), Total Phosphorus (PT), Total Nitrogen (NT), Calcium (Ca), Magnesium (Mg), Chlorides (Cl), Bicarbonate ( BiC), Alkalinity (Alc), Hardness (Du), Electrical Conductivity (EC), Total Solids (ST), Turbidity (Tu), Temperature (T) and Biochemical Oxygen Demand (BOD), which were determined in the Laboratory. UNEMAT Water Quality. The results for each variable were compared to the parameters of Resolution No. 357/2005 of the National Environmental Council (CONAMA). Subsequently, the Water Quality Index (WQI), the Phosphorus Based Trophic State Index (IETP) and the Aquatic Life Maintenance Index (VAT) were calculated. Water was found to vary from Poor to Fair by EQI with Eutrophic IETP and Poor IVA.
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