A cross-sectional study was conducted to evaluate mercury (Hg) exposure among 910 Pakaan va Indians from the counties of Guajar Mirim and Nova Marmor , Rond nia State, Brazil. Individual hair samples were taken from the occipital region, and Hg was measured by atomic absorption spectrometry with cold vapor generation. Mean Hg in hair samples was 8.37 micro g/g (range 0.52-83.89), indicating high exposure. Young children (< 2 years old) showed a mean Hg of 10.54 micro g/g, and children from 3 to 5 years old had a mean Hg of 9.34 micro g/g. Mercury levels in women (8,91 micro g/g) were higher than in men (7.55 micro g/g), and this difference was significant (t = 3.26; p < 0.01). These results indicate the need for surveillance programs and complementary studies including the Pakaan va Indians in Rond nia State.
ResumoEste estudo teve como objetivo avaliar, mediante caracterização microbiológica, a qualidade da água que abastece dois bairros atendidos pelo Programa de Macrodrenagem da Bacia do Una, na Região Metropolitana de Belém, Estado do Pará, bem como avaliar a água armazenada no interior dos respectivos domicílios pesquisados. Adotou-se a técnica da membrana filtrante para a pesquisa dos indicadores de contaminação fecal (coliformes totais e termotolerantes) e para a pesquisa de enteropatógenos. Os resultados obtidos mostram que em 18 (48,6%) e 29 (55,7%) residências dos bairros de Maracangalha [Conjunto Residencial Paraíso dos Pássaros (CRPP)] e do Barreiro, respectivamente, a água do sistema público própria para consumo humano chega ao domicílio. Ao ser armazenada sem os devidos cuidados, entretanto, essa água passa a registrar altos índices de coliformes totais e/ou termotolerantes, configurando risco à saúde da população.Palavras-chave: qualidade microbiológica da água; água para consumo; indicadores de contaminação fecal; coliformes.
Summary
The objective of this study was to evaluate the quality of the water used for human consumption, based on microbiological characterizations in Barreiro and
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