@article{jap2017514,
author={{Ite, Aniefiok E. and Ogunkunle, Clement O. and Obadimu, Clement O. and Asuaiko, Ekpedeme R. and Ibok, Udo J.},
title={Particulate Matter and Staff Exposure in an Air-Conditioned Office in Akwa Ibom State University 每 Nigeria},
journal={Journal of Atmospheric Pollution},
volume={5},
number={1},
pages={24--32},
year={2017},
url={http://pubs.sciepub.com/jap/5/1/4},
issn={2381-2990},
abstract={Indoor air quality parameters were investigated in an occupied air每conditioned office and unoccupied air每conditioned office located in the Faculty of Natural and Applied Sciences Complex in Akwa Ibom State University 每 Nigeria, during the rainy (June 每 July) and dry (November 每 December) seasons of 2016. Particulate matter (PM1, PM2, PM5, PM10), temperature, relative humidity, carbon monoxide (CO) and carbon dioxide (CO2) levels were simultaneously measured in fourteen (14) sampling days using Fluke 985 Particle Counter and Fluke 975 AirMeter. The concentrations of particulate matter in the occupied air每conditioned office during the rainy season ranged from 5152 每 5984 米g/m3 for PM1; 2744 每 3015 米g/m3 for PM2; 137 每 149 米g/m3 for PM5 and 36 每 50 米g/m3 for PM10 and in the unoccupied air每conditioned office, the concentrations of particulate matter ranged from 1898 每 2556 米g/m3 for PM1; 987 每 1311 米g/m3 for PM2; 38 每 59 米g/m3 for PM5 and 15 每 24 米g/m3 for PM10. During the dry season, the concentrations of particulate matter in the occupied air每conditioned office ranged from 5852 每 6510 米g/m3 for PM1; 4490 每 4992 米g/m3 for PM2; 335 每 362 米g/m3 for PM5 and 59 每 69 米g/m3 for PM10 and in the unoccupied air每conditioned office, the concentrations of particulate matter ranged from 2598 每 3112 米g/m3 for PM1; 1168 每 1694 米g/m3 for PM2; 153 每 257 米g/m3 for PM5 and 29 每 42 米g/m3 for PM10. This study has revealed that the particulate matter (PM1, PM2, PM5, PM10) concentrations in an occupied air每conditioned office were significantly (P < 0.001) higher than those obtained in unoccupied air每conditioned office during both rainy and dry seasons. However, the concentrations of PM10 obtained in the present study were found to be much lower than the ambient maximum contaminant level for airborne PM10 standard promulgated by the United States Environmental Protection Agency (USEPA) (150 米g/m3 daily average and 50 米g/m3 annual average) and World Health Organization (WHO) PM10 guidelines values (50 米g/m3 daily average and 20 米g/m3 annual average). Although there were no significant relationships among PM1, PM2, PM5, and PM10 in occupied air-conditioned office, correlation analysis indicated that PM1, PM2 and PM5 were significantly correlated at P < 0.01 in unoccupied air-conditioned office and correlation coefficients were different. Apart from suspended atmospheric dust and settling dust, human activities in the occupied air每conditioned office significantly influenced the particulate matter concentrations obtained compared to those obtained in unoccupied air每conditioned office in both rainy and dry seasons. Although the concentrations of CO and CO2 were below detection limit (BDL), they indicated adequate air exchange at the time of the assessment in the air每conditioned office during the sampling period. The results obtained have revealed important contributions towards the understanding of particulate matter distribution patterns and provided baseline data that can be used for potential identification of human health risks associated with airborne particulate matter in air每conditioned offices in Akwa Ibom State University 每 Nigeria.},
doi={10.12691/jap-5-1-4}
publisher={Science and Education Publishing}
}