@Article{pakinsight,
AUTHOR = {},
TITLE = {Gaseous Air Quality Indicators along Traffic Routes in Greater Freetown, Sierra Leone},
JOURNAL = {International Journal of Geography and Geology},
VOLUME = {6},
YEAR = {2017},
NUMBER = {2},
PAGES = {32-39},
URL = {http://www.pakinsight.com/archive/10/02-2017/2},
ISSN = {2305-7041},
ABSTRACT = {Urban air pollution is increasingly getting attention in developing 
countries in recent years. It was against this backdrop that this piece 
of work examined three indices of air pollution along a single carriage 
road (Kissy Road) and dual carriage road (Wilkinson Road) on either 
direction. Brief monitoring spell of nitrogen dioxide (NO2); sulphur 
dioxide (SO2) and carbon monoxide (CO) were made between August 2015 and
 September 2015 using the Drager X am 5000 realtime monitor for the 
different gases. Diurnal monitoring was made in the morning, afternoon 
and evening periods representing peak and off peak periods. Results 
indicated higher levels of pollution at Kissy Road relative to Wilkinson
 Road. Considerable variation were also observed among the pollutants 
for the two sites and the hourly average values revealed levels that are
 within ambient air quality standards except for SO2. Field observations
 revealed poorly maintained vehicles, human behavioral pattern, frequent
 traffic jams were attributed to the observed values.},
DOI = {10.18488/journal.10/2017.6.2/10.2.32.39}
}