الخلاصة

As a result of urban expansion, industrial, and population growth in the city of Hilla. So there were many sources of air pollution and should study the gas ratios and to identify the fact that air pollutants. This study included estimating the concentrations of some gases such as O2, O3, SO2, NO2, NO, Co, Co2, Ch4, TNMHC, O-xylene, and benzene with simultaneous measurement of weather conditions at the time of sampling during 2012 in Hilla station. The concentration of the gases varies with temperature, humidity, and wind speed.