AAAR 36th Annual Conference October 16 - October 20, 2017 Raleigh Convention Center Raleigh, North Carolina, USA
Abstract View
Child Exposure by Aerosol Particles inside a Bicycle Trailer during the Usual City Ride
JAN BENDL, Jan Hovorka, Charles University in Prague
Abstract Number: 302 Working Group: Aerosol Exposure
Abstract This innovative study shows how children in bicycle trailers are exposed by aerosol particles in comparison to cyclist during typical rides across the city of Prague, Czech Republic. We hypothesize, that resuspended coarse aerosol particles from dusty roads and submicron/nanoparticles from vehicle engines efficiently penetrate into a bicycle trailer due to low emission heights. The measurements were conducted by a laser nephelometer and twin condensation nuclei counters connected to omnidirectional inlets and sheltered in a box. Two boxes of identical instrumental were used. The first box is placed on handlebars holder at the cyclist breathing zone while the second box is placed inside the bicycle trailer. Temperature, wind speed/direction and GPS position were also concurrently measured. Overall data were recorded with integration time of 1 second. 19 km route including cycling paths, roads with low and high traffic and city park trails with different surfaces is being repeated twenty times at various time of day and weather conditions. Hot-spots of concentration ratios between cyclist and child breathing zone will be revealed, evaluated and displayed on the colored map. Aerosol concentrations during the ride will be also confronted with the city background and actual meteorological conditions and rider observations. Practical recommendations for elimination child exposition by aerosol particles during cycling will be one part of results.
This project is supported by the Charles University Grant Agency GA UK, no. 1474217 and the study is in progress.