title: [Evaluation of fluoride levels in the public water supply in São Luis Island, Maranhão State, Brazil].
abstract: The aim of the present study was to evaluate the fluoride levels in public water supply in São Luís island, Maranhão State, Brazil, during the month of October of 2006. A stratification sampling was applied, considering the water treatment station (06) and the different districts (46). For fluoride analysis it was used a specific ion electrode. The fluoride concentration varied for 0.05 to 0.84 ppm. Only one water treatment station (Italuís) presented an ideal concentration of fluoride. It was concluded that the fluoride levels need adjustments, evidencing that it is essential an external control for monitoring of those levels in public water supply of São Luis.
authors.affiliation: Departamento de Odontologia II, Universidade Federal do Maranhão, São Luis, MA, Brazil. cadidjadayane@yahoo.com.br
authors.forename: Cadidja Dayane Sousa do
authors.initials: CD
authors.lastname: Carmo
authors.forename: Cláudia Maria Coelho
authors.initials: CM
authors.lastname: Alves
authors.forename: Paulo Roberto
authors.initials: PR
authors.lastname: Cavalcante
authors.forename: Cecília Cláudia Costa
authors.initials: CC
authors.lastname: Ribeiro
mesh_terms: D001938:Brazil; D005459:Fluorides / Q000032:analysis*; D017150:Public Sector; D014881:Water Supply / Q000032:analysis*
chemical_list: D005459:Fluorides