Particulates, as measured by three different methods, in the Helwan City atmosphere

ABSTRACT

Total suspended particulate, smoke and dustfall were monitored at the same site in Helwan City atmosphere. The present investigation shows that air pollution situaion in the residential city of Helwan is critical. Air quality is influenced mainly by the emission from cement industry to the south of the city and the incomplete combustion processes in traffics, power station and other industries to the north of the city. Smoke and total suspended dust in the atmosphere were not associated and gave a negative correlation of r = -0.4. Rates of dust-fall gave a good correlation with the concentration of total suspended dust, but their chemical composition are quite different