When I started studying environmental engineering, I discovered an interest in the balance that can be found between industry and the environment. As my undergraduate studies progressed, I increased my interest in air quality and the impact it has on the life and health of people. Therefore I chose to do my thesis on the study of pollutants that are harmful to human health such as particulate matter and its behaviour during the mandatory quarantine in the city of Bogota due to the contingency caused by covid 19.