Estimation of carbon monoxide (co)‎ concentration in crowded streets at Hilla city

الملخص EN

Carbon monoxide is one of the most important pollutants in the urban air.

This pollutant results generally from vehicles exhausts.

In Hilla city, Carbon monoxide (CO) is dominated by the large streets in the center of the city.

The most crowded streets in Hilla city are Nader, 40, Al-Tayhrah, 60, and Al-Imam Ali street.

These streets (Figure 1) were chosen as physical models in this study.

Data, which covered April and May of year 2005, such as average cars speed, traffic volume, and traffic density were obtained by using manual counting and field observations.

Box model method was used to estimate Carbon monoxide (CO) concentrations.

The results of this study showed that the peak Carbon monoxide (CO) concentration in all of the studied streets usually happen between 11.00 am – 1.00 pm, and (CO) was within the allowable limits by considering inversion layers and prevailing wind velocities in Hilla city.