International Science Community Association Research Journal of Chemical Sciences 2231 - 606X 6 1 2016 January 18 Evaluation of Ambient Air quality in parts of Imo state, Nigeria 41 52 EN A Ewais Hassan 1 Chemistry Department, Faculty of Science, King Abdulaziz University, P.O Box.80203, Jeddah, 21589, SAUDI ARABIA Abdel-Salam Ahmed H 2 Chemistry Department, Faculty of Science, Alexandria University, Alexandria, EGYPT Ismail Mohamed K 3 Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef City, EGYPT S.B. Dare 1 Department of Chemistry, New Arts Commerce and Science College, Ahmednagar, Maharashatra, INDIA A. Vijayalakshmi 1 Department of Chemistry, RMK Engineering College, Chennai, Tamilnadu, India Balraj Vidyavathy 2 Department of Chemistry, Velammal Engineering College, Chennai, Tamilnadu, India B. Chithra 3 Department of Chemistry, RMK Engineering College, Chennai, Tamilnadu, India V.S. Gavhane 1 Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, MS, India D.M. Suryawanshi 2 Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, MS, India A.S. Rajbhoj 3 Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, MS, India S.T Gaikwad 4 Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, MS, India Habeeb Jabrail Fawzi 1 Polymer Research Lab. Chemistry Department, Science College, Mosul University, Mosul, IRAQ E. Mahmood Mahmood 2 Polymer Research Lab. Chemistry Department, Science College, Mosul University, Mosul, IRAQ O.A. Ogbonna 1 Department of Environmental Management and Toxicology, Michael Okpara University of Agriculture, Umudike, Abia State, NIGERIA P.C. Ogbonna 2 Department of Environmental Management and Toxicology, Michael Okpara University of Agriculture, Umudike, Abia State, NIGERIA M.C. Dike 3 Department of Forestry and Environmental Management, Michael Okpara University of Agriculture, Umudike, Abia State, NIGERIA F.C. Ibe 1 Department of Chemistry, Imo State University P.M.B 2000, Owerri, Imo State, NIGERIA P.C. Njoku 2 Department of Chemistry, Federal University of Technology P. M.B. 1526, Owerri, Imo State, NIGERIA Jude I. Alinnor 3 Department of Chemistry, Federal University of Technology P. M.B. 1526, Owerri, Imo State, NIGERIA A.I. Opara 4 Department of Geology, Federal University of Technology 1526, Owerri, Imo State, NIGERIA > Research Paper 2015 8 30 2016 January 18 Evaluation of the ambient air quality in Imo State, Nigeria was carried out with reference to four criteria air pollutants which include PM10, NO2, SO2 and CO using Haze dust particulate monitor (µ10m) and Gasman air monitors. Air quality monitoring was conducted in three times daily (morning, Afternoon and evening) in 22 locations within the months of November, 2014 and June, 2015. The result showed that the mean concentration of the air pollutants ranged as follows: PM10 (5.22 – 7.43) mg/m3, NO2 (0.46 - 0.58) ppm, SO2 (0.46 - 0.56) ppm and CO (30.15 – 40.98) ppm. The mean concentration of the air pollutants obtained exceeded the Nigerian NAAQS and US NAAAQS but NO2 and SO2 are within the permissible limit in some of the monitoring stations. Also AQI (air quality index) analysis revealed that CO is the conditional pollutant responsible for the observed deteriorated air quality index in the study area which calls for adequate attention and concern. Copyright@ International Science Community Association