|
| |
|
|
Exoposure of Citizen and Emplyee of Municipal Transport to Polycyclic Aromatic Hydrocarbons (PAHs) Contained in the Atmosphere at Travelling in Prague
Tydlitát, Vratislav ; Kotlík, B. ; Mikešová, M.
Concentration of PAHs, the number of aerosol particles of wide size spectrum, mass content of PM10 , PM2,5 and microclimatic parameters in atmosphere of Prague tram were measured in november 2008 and may 2009 on ost/west and south/nord lines. Concentration of PAHs TEFs does not overstep 30% over recomended limit 1ng.m-3. Mean concentration of PM10 during 8 hours oversteps permitted limit 50 g.m-3 more than three times, at PM2,5 oversteps the limit two times. At pollution asserts oneself emissions from vehicles at frequent parallel tram lines and transport lines. It is estimate the measure of exposure of the participant of tram tarffic to polycyclic aromatic hydrocarbons and to aerosole particles . PM10 , PM2,5 a PM1.
|
|
|
Polycyclic Aromatic Hydrocarbons in the Prague Atmosphere during the Years 2006 and 2007
Tydlitát, Vratislav ; Kotlík, B. ; Janota, J.
Six dependances of the sums of twelve selected polycyclic aromatic hydrocarbons content in the atmosphere on mean temperature in Prague atmoshere are presented in graphs. The data for PAHs with TEFs from 0,01 to 1 were measured in Prague in the years 2006 and 2007 on three monitoring stations in the town. Dependences shows steep grow of concentrations of PAHs with descending temperature. Similar results obtained authors at measurements of PAHs on aerosols PM10 in the year 2005. The high concentration values of PAHs occures at temperatures under 10°C. At these temperatures operates heating of buildings. I t is not a reason to expect at low teperatures the growing of traffic emissons. The authors hence adjudge the majoritarian growing of PAHs content at temperatures below 10°C to emissions from heating of buildings, in particular by the use of solid fuels.
|
|
| |
|
| |
|
| |
|
| |
guest ::
RSS feed.