Como parte de uma tese de doutoramento, foi realizado um estudo comparativo dos teores de mercúrio no cabelo de um grupo de trabalhadores que tinham deixado de manipular os fungicidas organo-mercuriais há pelo menos dois anos com outro grupo semelhante, porém sem a história de manipulação prévia destes fungicidas. Embora não tenham sido encontradas diferenças estatisticamente significantes entre os grupos, os dados apresentados sugerem que pode ter havido contaminação ambiental por mercúrio em trabalhadores, pelo menos dois anos depois da proibição do uso dos fungicidas organo-mercuriais no Brasil.
In a rural area of the state of Rio de Janeiro - Brazil was realized a comparative study of mercury levels in human scalp hair between two groups of sugar cane plantation workers: exposed and not exposed at past (up two years) to the organomercury fungicides. It was not find statistical difference between the two groups, but these results shown a possibility of environmental pollution

This paper evaluates the levels of exposure to and health effects of metallic mercury emissions into the atmosphere by gold dealers in the town of Poconé, Mato Grosso State, Brazil. The project was based on the comparison of referred morbidity, clinical examination, and metallic mercury urinary concentrations in three population groups. The first group consisted of downtown residents who were exposed to metallic mercury emissions. The second group resided on the outskirts of the town and the third in an agricultural area. Urinary concentrations of metallic mercury showed highly significant differences between groups from downtown and the outskirts as compared to the control group. Investigation of individuals with high concentrations showed that exposure in the downtown area might have come from gold dealers' establishments. In the group from the town outskirts, exposure might have been from amalgam-smelting done inside homes. Referred morbidity data showed an increased proportion of complaints and alterations in clinical examinations by downtown residents as compared to the other groups.It was concluded that there was a possibility of exposure and health effects caused by metallic mercury for residents from the first two groups.

Foi realizado um estudo comparativo dos efeitos do mercúrio entre dentistas e médicos que trabalham na Universidade Federal do Rio de Janeiro. Os resultados obtidos mostraram que os dentistas apresentavam um número estatisticamente maior de morbidade referida por rins e aparelho digestivo e sinais e sintomas de alterações de sistema nervoso. Outrossim, não houve diferenças significativas entre os dois grupos em relação aos teores de mercúrio no cabelo, o que pode ser explicado por alterações recentes no processo de trabalho dos dentistas.
A comparative study of morbidity and mercury levels in scalp hair between Dentists and Physicians was performed. The results showed significant higher number of cases of renal and digestive health problems and signs and symptoms related to the nervous system among the Dentists, what can be associated to mercury exposition. No statistical differences in mercury levels in scalp hair was found, possibly due to recent improvemensts in the working processes of Dentists