CORRELATION ANALYSIS BETWEEN THE LEVELS OF ENVIRONMENTAL AND BREATHABLE PARTICULATE MATTER IN A BICYCLE LANE IN THE CITY OF BOGOTA-COLOMBIA
Keywords:air quality, personal exposure, pm10, bicycle user, microenvironments.
One of the challenges of urban development is to avoid the degradation of environmental resources, including the quality of air its inhabitants breathe. Rapid industrial growth and urbanization have generated pressures on the environment, so large cities such as Bogotá face the challenge of balancing economic development with environmental equilibrium. Due to the increase in air quality alerts in the city of Bogotá D.C. in Colombia during the last 3 years, added to the rate of diseases associated with respiratory problems and complaints of exposure to breathable particulate matter by bicycle users who represent 18% of daily trips in the city, it is necessary to identify the relationship between the levels of ambient air quality by PM 10 particulate matter and the levels of exposure in microenvironments such as that of bicycle users in their travels. This article shows the results of direct measurements of breathable particulate matter of Bicycle users on a bicycle route in the city of Bogotá D.C., and compares them with the level of air quality by PM10 particulate matter recorded by the Air Quality Stations of the Air Quality Monitoring Network of Bogotá (RMCAB) closest to the route, in order to demonstrate causal relationships and define which variables make the Bicycle user more susceptible to be exposed to a level of particulate matter as a risk factor of their trip. Using sampling techniques and deductive statistical analysis based on information from direct measurements and secondary information from Bogotá's air quality measurement stations, it was found that the exposure levels to which bicycle users are exposed are higher than the ambient air quality levels, with differences of 0.95 µg/m between the measured values and those of the RMCAB. The canonical correlation coefficients between exposure levels and air quality levels at the stations were greater than 0.5. The meteorological variables relative humidity and wind speed had an influence on the exposure levels of the Bicycle users. This work is a contribution to the definition of public policies that affect the critical variables of this phenomenon not only at the global level of the city but with a functional approach with its inhabitants who move by bicycle, as a contribution not only to sustainable mobility but also to the use of cleaner means of transportation.