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- Title
Evaluation of Heavy Metals in Streams of the Bacanga and Cachorros Watersheds in São Luís, Brazil.
- Authors
Cabral, Patrícia Fernanda Pereira; Silva, Marcelo Henrique Lopes; da Silva, Iranaldo Santos; de Castro, Antonio Carlos Leal
- Abstract
Impacts on urban water resources are invariably caused by the development of urban centers and the occupation of the watershed. The release of untreated effluents and urban runoff are sources of metals in adjacent water bodies. It is therefore important to conduct studies on the occurrence of these trace elements in the environment and the risks posed to human health. The aim of the present study was to determine Cd, Pb, Cu, and Zn concentrations in water bodies located in the Bacanga and Cachorros watersheds and correlate the occurrence of these elements with physicochemical variables of the water (temperature, pH, dissolved oxygen, and electrical conductivity). The variables were determined at the collection site with the aid of a multiparameter kit. Heavy metal concentrations were determined using anodic stripping voltammetry. The results revealed that the streams were not contaminated with the metals analyzed. The only exception was copper in the Limoeiro and Murtura streams, both of which are located in the industrial complex.
- Subjects
SAO Luis do Maranhao (Brazil); BODIES of water; HEAVY metals; WATERSHEDS; WATER supply; RIVERS; MUNICIPAL water supply; HEAVY metal content of water
- Publication
Bulletin of Environmental Contamination & Toxicology, 2020, Vol 105, Issue 2, p299
- ISSN
0007-4861
- Publication type
Article
- DOI
10.1007/s00128-020-02932-8