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Child exposure to aerosol particles inside bicycle trailer during the usual ride
Nechvátalová, Karolína ; Bendl, Jan (advisor) ; Mašková, Ludmila (referee)
Bicycle trailers represent a popular way of transporting children during cycling, however increased exposure to aerosol particles due to the location of the trailer in the immediate vicinity of the cycle path surface and of the bike tire may pose a health risk. Some aerosol particles can cause respiratory as well as other severe diseases, since the surface of the paths may also contain toxic substances, such as those produced by traffic. Children are more prone to developing respiratory and other diseases than adults, and therefore more attention is needed. The aim of this project is to find out how many times are the concentrations of PM10, PM4, PM2,5 and PM1 aerosol size fractions and the particle number concentrations higher in the trailer in comparison to the cyclist in front of it at different driving speeds while driving on dusty roads and to confirm the hypothesis that the particles are resuspended from the surface of the road and penetrate into the trailer, which has not been quantified so far. The possible health consequences are also discussed in this project. We did three measurements on two roughly 200 m long dusty sections of cycle paths (Stromovka park, cycle path A22 in Braník) in Prague. For the measurement, the trailer (Chariot Cougar 2, Thule) and the box placed on the handlebar...
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PM10 hot-spot identification and characterisation in Prague 7 city district
Nechvátalová, Karolína ; Hovorka, Jan (advisor) ; Kozáková, Jana (referee)
Many cities suffer from poor air quality as they concentrate a large number of anthropogenic sources of air pollution, especially aerosol particles with an aerodynamic diameter of less than 10 m, PM10. Due to high urbanization, more than 50 % of the world population is exposed to urban PM10. Exposure to elevated PM10 can cause respiratory and cardiovascular diseases or premature deaths. Therefore, the Prague 7 city district concluded an agreement with the Laboratory for Air Quality Studies (Charles University, Faculty of Science) to perform detailed spatial and temporal PM10 concentrations survey on its territory. For this purpose, mobile measurements of PM10 were performed in Prague 7. The study area was divided into 6 smaller localities. One fixed route (3,4-4,5 km) was determined at each locality. In the period from December 2019 to May 2020, a total of 174 errands were performed during 10 days, regularly at 8:00, 12:00 and 17:00. The team members conducted prescribed walks with DustTrak and Garmin GPS devices, which detected every second the PM10 mass concentrations and the exact location for a purpose to synchronize the PM10 data with the detection site. Meteorological conditions were recorded by a professional meteorological station. During most of the observed days, PM10 concentrations in...
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Child exposure to aerosol particles inside bicycle trailer during the usual ride
Nechvátalová, Karolína ; Bendl, Jan (advisor) ; Mašková, Ludmila (referee)
Bicycle trailers represent a popular way of transporting children during cycling, however increased exposure to aerosol particles due to the location of the trailer in the immediate vicinity of the cycle path surface and of the bike tire may pose a health risk. Some aerosol particles can cause respiratory as well as other severe diseases, since the surface of the paths may also contain toxic substances, such as those produced by traffic. Children are more prone to developing respiratory and other diseases than adults, and therefore more attention is needed. The aim of this project is to find out how many times are the concentrations of PM10, PM4, PM2,5 and PM1 aerosol size fractions and the particle number concentrations higher in the trailer in comparison to the cyclist in front of it at different driving speeds while driving on dusty roads and to confirm the hypothesis that the particles are resuspended from the surface of the road and penetrate into the trailer, which has not been quantified so far. The possible health consequences are also discussed in this project. We did three measurements on two roughly 200 m long dusty sections of cycle paths (Stromovka park, cycle path A22 in Braník) in Prague. For the measurement, the trailer (Chariot Cougar 2, Thule) and the box placed on the handlebar...
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