SPATIAL AND TEMPORAL VARIATION OF PARTICULATE MATTER (TSP, PM10, PM2.5) IN URBAN AND RURAL AREAS OF NIGER DELTA REGION NIGERIA

T F Ediagbonya

Abstract



Atmospheric environmental problems which had previously received scanty attention in Nigeria have become a subject of increasing National Significance in the last two years. In this study the TSP, Inhalable and Respirable fraction were captured in ten locations in Sapele and five locations in Obaretin (rural) area gravimetrically between December 2008 and October 2009 using programmable Air check XR 5000 High volume sampler model 210-5000, with glass filter and respirable foam. The result showed that the mean TSP, Inhalable and Respirable fractions were significantly (P less than 0.05) higher in Urban than Rural. Also, the urban TSP was above the limit set by the Federal Ministry of Environment (FMEV) while the Inhalable and respirable particles were higher than the limit set by National Ambient Air Quality Standard(NAAS).There was a decline in particles from April 2009 to October 2009 over December 2008 to March 2009. The mean concentration of TSP was 471.64µg/m3 in Sapele(urban area) and 388.27 µg/m3 in Obaretin(rural area) and the mean concentration of inhalable particulate matter was 313.45 µg/m3 in Sapele and 200.67 µg/m3 in Obaretin (rural area) while the mean concentration of respirable particulate matter was 179.93µg/m3 in Sapele (urban area) and 140.15 µg/m3 in Obaretin (rural area).

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