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

Table 2

Overall mean metal concentrations (mg kg⁻¹, dry weight) in tree bark samples.

Parameters	Pb	Cd	Zn	Cu	Co	Cr
Total	389.06	5.99	1796.89	448.47	56.64	184.81
Mean SD
Range	75–29.74	<0.01–0.26	3.70–166.13	1.81–39.12	0.23–2.35	<0.01–8.34