Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2004.380.383Barbula lambarenensis as a Monitor
of Local Atmospheric Pollution in Ile-Ife, Nigeria]]>OgunfowokanA.O. AsubiojoO.I. AdeniyiA.A. OluyemiE.A. 3200443Moss samples Barbula
lambarenensis (P. Vard) were taken along major and minor roads of Ile-Ife,
in the South Western part of Nigeria and were analysed after triple acid digestion
for the trace metals: Lead, Zinc and Copper by Graphite Furnace Atomic Absorption
spectrophotometry. The triplicate field data were averaged to yield mean concentrations
at each sample location. The lead and zinc levels ranged from 196.8 (0.04)-108.5
(0.03) μg g-1 and from 593.1 (0.02)-35.0 (0.10) μg g-1
dry weight, respectively in the moss samples. These results from the analysis
of the moss samples show that Pb and Zn levels were generally higher in areas
with relatively high traffic density than low traffic density areas. Similar
studies on Copper gave lower values (47.0 (0.01)-10.1 (0.01) μg Cu g-1)
dry weight in the samples which did not show any correlation with traffic density.
Analysis of standard plant reference materials (BCR:CRM 062) gave results Pb
26.7 (0.10); Zn 17.4 (0.46) and Cu 45.8 (0.40) which are found to be in good
agreement with the certified values for Pb 25.0 (1.5); Zn 16.0 (0.7) and Cu
46.6 (1.8). The average traffic volumes of the study area are 990 vehicles per
hour and 520 vehicles per hour for high and low traffic density areas, respectively.]]>Ruhling, A. and G. Tyler,1968121321342Thomas, W.,198611339346Goodman, G.T. and T.M. Roberts,1971231287292Clyde, A.H.,197121341341Valko Vic, V., D. Rendic and E.K. Biegert,197922727Osibanjo, O. and S.O. Ajayi,19804239244Fatoki, O.S. and E.T. Ayodele,199117455460Fatoki, O.S.,198713369373Ogunsola, O.J., A.F. Oluwole, O.I. Asubiojo and H.B. Olaniyi et al.,1994146175184Motto, H.L., R.A. Daines, D.M. Chilko and C.K. Motto,19704231237Cannon, H.L. and J.M. Bowels,1962137565566Oyedele, D.J., I.B. Obioh, J.A. Adejumo, A.F. Oluwole, P.O. Aina and O.I. Asubiojo,1995172189195Ogunsola, O.J., A.F. Oluwole, I.B. Obioh, O.I. Asubiojo, F.A. Akeredolu, O.A. Akanle and N.M. Spyrou,199379404407Nyangababo, J.T. and J.W. Hamya, 1986Brachiaria enimi and soil along a major Bombo road in Kampala City.]]>27115119Ogunfowokan, A.O. and O.A. Fakankun,199854145152Miller, J.C. and J.N. Miller,1988pp: 55-58pp: 55-58Williamson, S.J.,1973Moore, J.W. and E.A. Moore,1976Arah, A.R.O. and J.N. Nwankwo,19871987Dutta, A.C.,1974Fatoki, O.S.,200056501513