2011-12-162011-12-162000-04PINHEIRO, Maria da Conceição Nascimento et al. Avaliação da contaminação mercurial mediante análise do teor de Hg total em amostras de cabelo em comunidades ribeirinhas do Tapajós, Pará, Brasil. Revista da Sociedade Brasileira de Medicina Tropical, Uberaba, v. 33, n. 2, p. 181-184, mar./abr. 2000. Disponível em: <http://www.scielo.br/pdf/rsbmt/v33n2/v33n2a04.pdf>. Acesso em: 15 dez. 2011. <http://dx.doi.org/10.1590/S0037-86822000000200004>.0037-86821678-9849http://www.repositorio.ufpa.br:8080/jspui/handle/2011/2430This study evaluates human exposure to methylmercury in fishermen and their families in four villages on the Tapajós river: Rainha, Barreiras, São Luís do Tapajós and Paraná-Mirim. Hair analyses were performed with atomic absorption spectophotometry. Total hair mercury levels varied between 2.9mg/g and 71.5mg/g. Paraná-Mirim showed the lowest level. The highest level was found in São Luís do Tapajós and Barreiras. The hair mercury was six to seven times higher than the established safe limit of 10mg/g. No statistically significant difference was found between the mean level of total mercury taken from the inhabitants living downstream and upstream in Itaituba village (p > 0.05). These results confirm that human exposure to methylmercury is occurring on the Tapajós river and suggest that continued fish ingestion in that region is a potential risk factor for the appearance of symptoms and signs of Minamata disease. An immediate epidemiological survey program is recommended.porAcesso AbertoAmazônia brasileiraRio Tapajós - PAItaituba - PAPará - EstadoMetilmercúrioContaminação por mercúrioPopulação ribeirinhaArtigo de Periódico