In the last few years, different types of pesticides have been detected in the atmosphere in rural and urban areas around the world. These, are chemical compounds used in agriculture to avoid plague, rodents, fungi and unwanted plants. Besides that, they are often used in public health to kill vectors of disease, such as mosquitoes. Some studies have showed the relations between pesticides exposure and some diseases, such as autoimmune and cardiovascular diseases, and respiratory problems. An attempt to investigate the composition of PM in the neighbor atmosphere of an industrial complex has been proposed in the last years due to the high rate of thyroid diseases in the population living near this region. In this work was determined the concentrations of pesticides in samples collected between 2015, 2016 and 2017 at an industrial and urban area. The assessment of the risk caused by inhalation of these compounds was calculated. Samples (n=42) were extracted and 11 pesticides were determined by gas chromatography coupled to a mass spectrometer. Samples collected in 2017 showed the higher concentrations. Pesticides such as malathion and permethrin, used in the control of domestic pests, presented the highest concentrations (537 pg m-3 and 625 pg m-3 respectively) due to the wide use in this area. The highest values of daily inhalation exposure were for heptachlor in infants, 2 x 10-4 mg kg-1 day-1. All values of the hazard quotients are lower than 1.0 indicating that there is no danger to human health by inhalation. Cancer risk was found for heptachlor in adults, infants and children in the three years.

Pesticides concentrations in the atmosphere of an urban area in Brazil: Risk assessment for human health

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.