Determination of levels of gaseous air pollutants emitted at Ajakanga dump site, Ibadan, Nigeria
Abstract
Municipal solid waste dump sites have been reported to generate different kinds of air
pollutants the world over. Air pollutants, such as CO, H2S, NH3, NOx and SO2 have significant
adverse effects on man, plants and other animals. There is a need for regular monitoring of
their levels in the atmosphere. In this study, the concentrations of three gaseous air pollutants
(SO2, NOx and NH3) emitted from municipal solid waste at Ajakanga dump site, Ibadan,
Nigeria, were determined using uv/visible spectrophotometry. The ranges of concentrations
obtained for SO2, NOx and NH3 were 255.86–503.66 µg/m3
; 246.67–1,155.79 µg/m3
and
777.51–1,852.48 µg/m3
respectively in air samples collected at the dump site. The increasing
order of the gaseous air pollutants at the dump site is SO2 < NOx < NH3. The emission rates
of SO2, NOx and NH3 must be controlled because of their adverse health effects on the
environment.
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