The Influence of Relative Humidity on Concentrations (PM10, TSP) in Baghdad City

Osama T. Al-Taai, and Zahraa M. Al-Ghabban

Department of Atmospheric Sciences, College of Science, Al-Mustansiriyah University, Baghdad, Iraq

Abstract: The aim of this research is to study effect of relative humidityon the concentrations of pollutants suspended particulate (Particulate Matter diameter less than 10 μm (PM10) and Total Suspended Particulates (TSP)) for Al-Andalus Square station (Commercial-Residential) in Baghdad city, through the use of methods and statistical programs. It was found that the relationship between relative humidity and suspended particulates (PM10, TSP) is an extrusive (positive) correlation to all hours of study. And found that the highest concentrations of suspended particulates (PM10, TSP) when hours morning and evening study reported in the days (20/6, 22/7, 15/8) of the summer months, followed by hours days (18/3, 17/4, 20/5) of the spring months and then-hour days (17/9, 22/10, 14/11) of the autumn months, and lower concentrations of the suspended particulates (PM10, TSP) when the hours of the morning and evening study reported in the days (17/12, 17/1, 15/2) of the winter months. And that the concentrations of suspended particulates (PM10, TSP) through high morning hours, and in the evening were a few.And found that there are exceeded in the concentrations of suspended particulates (PM10, TSP) world determinants and local at the morning and evening study hours to days (20/6, 22/7, 15/8), either at study hours to days (17/12, 17/1, 15/2) The concentrations of suspended particulates PM10oscillatory world and local determinants and two for concentrations TSP was higher than the world and less than the local determinant. But when study hours and days (18/3, 17/4, 20/5) was concentrations PM10 higher than the world and determinant local concentrations TSP was higher than the world and less than the local determinant fixed for station. But when the study hours to days (17/9, 22/10, 14/11) were concentrations PM10 higher than the world and local determinant and concentrations TSP was higher than the world determinant and oscillatory local determinant for Al-Andalus Square station.

Key words: relative humidity, suspended particulate, air pollutants, aerosols, Iraq