Estimación de la fracción inhalada de contaminantes primarios del aire en la ciudad de Medellín

Intake fraction was estimated for measured pollutants in Medellín city: suspended particulates (PM₁₀ and PM_2.5), carbon monoxide (CO) and nitrogen oxides (NO_x). The applicable method for primary pollutants was used, according to the existing air quality data in terms of emissions and concentrations, as a factor that can be used in the evaluation of the impact on human health due to the sources of air pollution. The data of emissions, attributable exposure concentration, amount population and breathing rates were processed for calculation. Given the importance of the spatial and temporal relationship of the variables, all data were from 2015, the last period in which the inventory of atmospheric emissions was updated. Areas of spatial representativeness were considered, obtaining cells with a CSF greater than 0.9 in Politécnico Jaime Isaza Cadavid (MED-PJIC) (PM₁₀ and CO) and Universidad Nacional Núcleo el Volador (MED-UNNV) (PM_2.5 and NO_x) stations. Yearly averages of the intake fraction were: 475 and 29 ppm for PM₁₀ and CO, respectively, at MED-PJIC sta-tion, and 151 and 64 ppm for PM_2.5 and NO_x, respectively, at MED-UNNV station. The intake fraction values were analyzed too by weighted respiration rates by age groups, and by hourly, daily, monthly and daily weekday averages of concentration and pollutant emission values.