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muestreo evidencian niveles con riesgo
              para la salud; los niveles de CO2 fluctúan
              en los rangos permisibles, alcanzando
              valores de 418ppm, límite que puede
              llegar a riesgoso, teniendo en cuenta el
              tiempo de exposición; en el caso de las
              mediciones para el material particulado,
              el 70% de las tomas alcanza niveles
              con riesgo; es importante destacar que
              el tiempo de las tomas de medición era
              de una hora, en diferentes momentos
              del día, lo cual, infiere directamente en
              los niveles registrados; esto representa
              una referencia, pero es necesario
              hacer un estudio más detallado, para
              evaluar el tiempo de exposición y los
              niveles perjudiciales para las personas
              que  se  encuentran  en  estas  zonas,
              constantemente.










              SUMMARY





                  arge cities and those in progress of   cities, these are some of the factors   an estimate of the quality in which they
                  growth or intermediate cities have   that contribute to development, but also   are find the air we breathe. Constant
             Lseen accelerated growth in some   affect the minimum-basic environmental   review is pertinent so that they are met
              lines that move and boost their economy,   conditions required by the population.   within the established standards, which
              these socioeconomic phenomena that   The state of air quality today becomes   give the peace of mind of circulating in
              augur a future also have an impact   a primary factor to evaluate according   ideal environments for people’s health.
              on the quality of life. The increase in   to the lifestyle of people, whose habits   In the study, the concentrations of CO,
              the number of vehicles, the use of   in their actions lead to it being able to   CO2 and particulate matter PM 2.5ppm
              refrigerators and air conditioners, mass   improve or worsen. The evaluation of   and PM 10ppm were quantified in the
              production in factories, increasingly tall   gases such as carbon monoxide (CO),   main parks of Pereira in the hours
              buildings that generate less ventilated   carbon dioxide (CO2), particulate matter   of  the day where there  is  a greater
              and closed spaces, destruction of   less than 2.5 microns (PM 2.5) and less   influx of cars and pedestrians. Gases
              peripheral and internal green areas of   than 10 microns (PM 10), allows to have   and particulate matter samples were



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