Avaliação Preliminar da Presença de Metais Traço, nas Águas do Riacho Mussuré e o Córrego de Mumbaba – João Pessoa – PB (Preliminary Assessment of the Presence of Trace Metals in the Waters of the Stream Mussuré and Creek Mumbaba - João Pessoa)
DOI:
https://doi.org/10.26848/rbgf.v7.4.p668-677Keywords:
Qualidade da Água, Poluição da Água, Impactos Ambientais, Núcleo IndustrialAbstract
Este estudo teve como objetivo analisar a qualidade da água do córrego Mumbaba e o riacho Mussuré por meios de parâmetros físico-químicos; dando ênfase a presença de concentração de metais pesados nas águas, a fim de fornecer subsídios aos gestores ambientais na tomada de decisões. Para tanto, delimitou-se como área de estudo a bacia do riacho Mussuré, que está inserida na bacia do rio Gramame, no estado da Paraíba. E o Córrego localizado na comunidade Mumbaba no sudoeste do Município de João Pessoa – PB. Cinco pontos amostrais foram estabelecidos e as variáveis medidas foram temperatura, pH, condutividade elétrica, turbidez, oxigênio dissolvido, nitrato, nitrito, nitrogênio amoniacal e fósforo. Foram constatadas diversas alterações na qualidade da água do riacho Mussuré e o córrego, ao longo de todo seu curso. Os teores de OD estavam muito abaixo do limite estabelecido pela Resolução 357/05 para a classe 3 (4,0 mgL-1), nas cinco estações monitoradas. A estação situada aproximadamente na metade do curso do riacho apresentou os maiores valores de turbidez, e a pior qualidade da água através do uso dos dois índices citados, fato que se deve ao lançamento de efluentes industriais a montante desta estação. Com relação aos metais, as concentrações de cromo total, chumbo, níquel, cádmio, cobre e mercúrio em todos os pontos analisados permaneceram abaixo do limite estabelecido pela resolução nº 357/2005 do CONAMA. Pelos resultados encontrados conclui-se que o riacho Mussuré, e o córrego apresenta alto grau de degradação e suas águas representam um risco para a saúde da população usuária.
Preliminary Assessment of the Presence of Trace Metals in the Waters of the Stream Mussuré and Creek Mumbaba - João Pessoa
A B S T R A C T
The aim of this work was to evaluate the water quality of the stream Mussuré and creek Mumbaba by means of physico-chemical parameters: emphasizing the presence of heavy metals concentration in water in order to provide information to environmental managers in making decisions. So, we delineated the study area as the basin of the creek Mussuré , which is embedded in the Gramame River basin in the state of Paraíba . And the community Mumbaba located in the southwest of the city of João Pessoa - PB . The methodology consisted in the analysis of water quality data . The data relating to physical , chemical parameters were analyzed over five sampling stations . Several changes were observed in the water quality of the stream and creek Mussuré , throughout its course . The levels of DO were well below the limit established by CONAMA Resolution 357 / 05 for Class 3 ( 4.0 mg / L ) in five stations monitored . The station located about halfway through the course of the creek had the highest turbidity values , and the lowest water quality through the use of two indices mentioned, a fact that is due to industrial effluent discharge upstream of this station . As for metals, concentrations of total chromium, lead, nickel and copper in the stream Mussuré station (MS01A) showed values above the limit established by CONAMA Resolution 357/2005. The results it is concluded that the creek Mussuré , and the stream has a high degree of degradation and its waters pose a risk to the health of the user population .
Keywords: water quality, water pollution, environmental impacts, Industrial core
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Copyright (c) 2014 Maria Leonia Pessoa, Jose Dantas Neto

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