Using air pollution detecting equipments ITX,ATX620 and IBRID-MX6 Multi gas monitors a pioneer research was carried out to assess the levels of the exhausted gas emission in double-floored car parks of the Holy Prophe...Using air pollution detecting equipments ITX,ATX620 and IBRID-MX6 Multi gas monitors a pioneer research was carried out to assess the levels of the exhausted gas emission in double-floored car parks of the Holy Prophet Mosque in Al-Madinah A l-Munawarah from early 12:00 to 14:00 of Friday and from 19:00 to 22:30 at holy month,Ramadan.The percentage of both carbon monoxide(CO)and nitrogen dioxide(NO2)had significantly increased(p〈0.05-0.005).The peak levels of these air pollutants were between 13:15-13:20 during Fridays.The increase in the emission of these exhausted gases was concomitant with the significant decrease(p〈0.05)in oxygen(02)levels but the latter recovered its levels after 13:20 hours.The arithmetic total mean density of vehicle per minute(vpm)at Salam Road,the busiest road of Al-Madinah,during hours(07:00-09:00),(13:00-15:00)and(17:00-19:00)of both Friday and Saturdays respectively were(8/45,16/40 and 36/43).The increase in air pollution has been attributed to a dramatic increase in number of public cars use the car parks during these times,the consequent congestion at entries,the excess or/and poor consumption of fuels being utilized and the inadequate ventilation.展开更多
文摘Using air pollution detecting equipments ITX,ATX620 and IBRID-MX6 Multi gas monitors a pioneer research was carried out to assess the levels of the exhausted gas emission in double-floored car parks of the Holy Prophet Mosque in Al-Madinah A l-Munawarah from early 12:00 to 14:00 of Friday and from 19:00 to 22:30 at holy month,Ramadan.The percentage of both carbon monoxide(CO)and nitrogen dioxide(NO2)had significantly increased(p〈0.05-0.005).The peak levels of these air pollutants were between 13:15-13:20 during Fridays.The increase in the emission of these exhausted gases was concomitant with the significant decrease(p〈0.05)in oxygen(02)levels but the latter recovered its levels after 13:20 hours.The arithmetic total mean density of vehicle per minute(vpm)at Salam Road,the busiest road of Al-Madinah,during hours(07:00-09:00),(13:00-15:00)and(17:00-19:00)of both Friday and Saturdays respectively were(8/45,16/40 and 36/43).The increase in air pollution has been attributed to a dramatic increase in number of public cars use the car parks during these times,the consequent congestion at entries,the excess or/and poor consumption of fuels being utilized and the inadequate ventilation.
