Investigation of Traffic air Pollution in Addis Ababa City around Selected Bus Stations Using Instrumental Neutron Activation Technique

Instrumental Neutron Activation Analysis (INAA) using high resolution gamma-ray spectrometry was used to monitor traffic air pollution in Addis Ababa city (Ethiopia) around selected bus stations. Bio-monitoring technique was applied for the research. The low neutron flux from our isotope source is compensated by taking relatively long irradiation time and large mass samples. Gamma photon mass absorption correction was made for the relative large mass sample. It was identified that more than 18 air pollutant elements are accumulated in the bio-monitor samples. The research reveals that the studied area were highly polluted due to mainly traffic air pollution.