Research Article

Assessment of Trace Metals Concentration in Tree Barks as Indicator of Atmospheric Pollution within Ibadan City, South-West, Nigeria

Table 1

Summary of results for tree bark metal concentration (mean ± SD, mg kg−1, dry weight) in all zones.

MetalParameterIndustrial zoneHigh traffic
commercial zone
Residential
high traffic zone
Residential
low traffic zone
Control zone

PbMean ± SD
CdMean ± SD
ZnMean ± SD
CuMean ± SD
CoMean ± SD
CrMean ± SD