Water quality of the Ribeirao Preto Stream, a watercourse under anthropogenic influence in the southeast of Brazil

Autor(es)

da Silva Alves, Renato I. ^[1] ; Cardoso, Osmar de Oliveira ^[1] ; de Abreu Tonani, Karina A. ^[1] ; Juliao, Fabiana C. ^[1] ; Trevilato, Tania M. B. ^[2] ; Segura-Munoz, Susana I. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Lab Ecotoxicol & Environm Parasitol, Dept Maternal Infant Nursing & Publ Hlth, Ribeirao Preto Coll Nursing, BR-14040902 Ribeirao Preto, SP - Brazil

^[2] Univ Sao Paulo, Pediat Lab, Met Sect, Univ Hosp, Sch Med Ribeirao Preto, BR-14040902 Ribeirao Preto, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ENVIRONMENTAL MONITORING AND ASSESSMENT; v. 185, n. 2, p. 1151-1161, FEB 2013.
• Citações Web of Science: 11

Resumo

It is known that Brazil still has a privileged position of water quantity and quality, but water use has not proceeded in a responsible manner and often results in impairment of quality. This study aims to evaluate limnological parameters, parasites and bacteria, and concentrations of heavy metals (Cd, Pb, Cu, Cr, Mn, Hg, and Zn) in surface water of Ribeiro Preto Stream. The Ribeiro Preto Stream is located in urban areas under anthropogenic influence. The results showed that the levels of dissolved oxygen values were lower than those established by the National Environmental Council (CONAMA Resolution No 357/2005). The reading of electrical conductivity showed values typical of impacted environments. The parasitological analysis revealed the presence of nematode larvae. The bacteriological analysis showed higher values for total coliform and Escherichia coli than those set by the Brazilian National Environment Council (CONAMA). The heavy metals Cd, Pb, Cu, Cr, Mn, Hg, and Zn showed concentrations in accordance with the guidelines established by CONAMA. The results provide data on the quality of these waters and showed the necessity to protect the watercourse from point sources of contamination, recommending their continued monitoring. (AU)

• Processo FAPESP: 07/57311-7 - Avaliacao de parasitas, bacterias e metais pesados em agua superficial e sedimento do corrego ribeirao preto, ribeirao preto - sp, como indicadores de fontes difusas e pontuais de poluicao.
• Beneficiário: Renato Igor da Silva Alves
• Modalidade de apoio: Bolsas no Brasil - Mestrado