Sanitary quality of sands from marine recreational beaches of São Paulo, Brazil

Brazilian Journal of Microbiology

Maria Inês Zanoli Sato¹  Marisa Di Bari¹  Claudia Condé Lamparelli¹  Ana Cristina Truzzi¹  Maria Cristina L.s. Coelho¹  Elayse Maria Hachich¹ 

[1] ,Companhia Estadual de Tecnologia e Saneamento BásicoSão Paulo SP ,Brasil

关键词: sand;    seawater;    recreational areas;    fecal indicators;    microbiological criteria;    areia;    água do mar;    áreas de lazer;    indicadores de contaminação fecal;    critérios microbiológicos;   

DOI  :  10.1590/S1517-83822005000400003

来源: SciELO

【 摘 要 】

A sanitary evaluation of sand and water from 16 beaches of São Paulo State, Brazil, was undertaken during spring of 1997 and summer of 1998. Ninety six samples each of wet and dry sand and seawater were collected and analysed for fecal indicator bacteria. A parasitological examination and Candida albicans analysis were also performed in sand samples and F-specific bacteriophages were determined in seawater. Statistical analysis of the results demonstrated higher concentrations of fecal coliforms and fecal streptococci in dry sand during summer. Correlation analysis indicated a significant relationship between fecal indicator densities in wet sand and seawater. There was a significant correlation between the densities of fecal coliforms and fecal streptococci for both types of sand, and this correlation was higher in wet sand. Cysts and eggs of parasites were detected in 4.2% of the samples and Candida albicans was isolated in 18% of the samples. The high concentrations of fecal indicators detected in sand during summer demonstrate that there is a health risk to the users of these recreational areas and suggest the necessity of some criteria for microbiological control. Preventive measures, such as education campaings and some management actions are important precautionary measures.

【 授权许可】

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