[Metals in landfill leachate in Ribeirão Preto, São Paulo State, Brazil, and its relevance for public health].
This study analyzed the levels of cadmium, lead, copper, chromium, manganese, mercury, and zinc in leachate from the Ribeirão Preto landfill site in São Paulo State, Brazil. Samples were taken from runoff tanks in Module I (operating from 1989 to 2000) and Module II (operating since November 2000). Metal levels were measured by atomic absorption spectrophotometry at the University of São Paulo in Ribeirão Preto (University Hospital). Results were compared to the maximum limits for metal concentration in liquid effluents set by Ruling 357/2005 of the National Environmental Council (CONAMA). The study also investigated whether there was any attenuation in metal concentrations in the leachate, considering differences in the life spans of the various Ribeirão Preto landfill site modules. Metal levels in the samples were within the maximum limits for cadmium, chromium, copper, mercury, and manganese, but lead and zinc were above the limits set by the above-mentioned ruling.
Celere
Marina Smidt
MS
Escola de Enfermagem de Ribeirão Preto, Universidade de São Paulo, Rua Rio Xingú 594, Ribeirão Preto, São Paulo 14060-240, Brazil. susis@eerp.usp.br
Oliveira
Aline da Silva
Ada S
Trevilato
Tânia Maria Beltramini
TM
Segura-Muñoz
Susana Inés
SI
D001938:Brazil; D004785:Environmental Pollutants / Q000032:analysis*; D006801:Humans; D019216:Metals, Heavy / Q000032:analysis*; D012037:Refuse Disposal / Q000331:legislation & jurisprudence / Q000379:methods; D013054:Spectrophotometry, Atomic; D018505:Waste Management / Q000331:legislation & jurisprudence / Q000379:methods
D004785:Environmental Pollutants; D019216:Metals, Heavy