Avaliação da qualidade das águas subterrâneas dos cemitérios de Brasília e seu entorno
Carregando...
Data
2011-12-15
Autores
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Federal de Goiás
Resumo
This study evaluated the impact of necroleachate in the groundwater
aquifer of some cemeteries located in towns around the federal district of
Brasilia between 2007 and 2011. Cemeteries in Braslândia, Plano Piloto,
Taguatinga, Gama, Sobradinho and Planaltina, located in the federal district,
were studied including the Jardim Metropolitano (cemetery and crematorium) in
Val Paraíso, Goias. Analysis of physico-chemical and microbiological
parameters of underground water samples taken from monitored wells were
carried out. The alkalinity, pH value, organic oxygen, conductivity, color,
hardness, turbidity, iron content, total quantity of dissolved solid and the
chemical and biological oxygen demand of a total of 342 samples were
monitored. The result showed that the median values of the physico-chemical
parameter obtained are within the range of those permitted by the law.
However, it was observed that there was a sharp increase in the median
concentration of organic oxygen parameters and the biological and chemical
oxygen demand between 2007 and 2011. The results were be evaluated using
the RDA (Redundancy analysis) model from the CANOCO software which does
a canonical ordination and Redundancy analysis, serving as a chemical tool.
The Redundancy analysis allowed for the identification of collection areas with
the greatest amount of physico-chemical parameters, thereby allowing for
separation and classification of water samples. It also became possible to
correlate the physico-chemical and microbiological results and identify areas
more prone to contamination, hereby ascertaining the influence of these factors
in modifying the potability of Aquifers, however within established standard
parameters.
Descrição
Palavras-chave
Citação
SABA, Elias Divino. Quality assessment of groundwater cemetery of Brasilia and its surroundings. 2011. 107 f. Dissertação (Mestrado em Educação em Química) - Universidade Federal de Goiás, Goiânia, 2011.