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Biomonitoramento dos efeitos genotóxicos relacionados à poluição atmosférica em ambientes de intenso tráfego de veículos: Contribuições para a vigilância em saúde ambiental de populações expostas
Summary
This paper is not about microplastics; it reports a biomonitoring study using the plant Tradescantia pallida to measure genotoxic effects of vehicle traffic air pollution at urban intersections in Brazil.
A biological assessment of environmental quality was performed using the tropical plant species Tradescantia pallida (Rose) D.R. Hunt. var. purpurea exposed to different levels of air contamination in urban intersections with high volume of vehicle traffic. Air quality (average daily levels of particulate material in the PM1, 2.5, 10 fractions) and traffic volume in crossing intersections were monitored for 30 days before the collection of plants. Frequency of micronuclei and pollen abortivity in inflorescences collected at different intersections with gradual levels of traffic volume were evaluated as biomarkers of genotoxicity. In addition, the concentrations of bioaccumulated heavy metals in the leaves of the collected plants were also investigated. The proposed biological assessment model found a positive association between the environmental variables (traffic volume; concentration of particulate material) and biological effects (leaf concentration of Cr and Cd; micronucleus frequencies and pollen abortivity).
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