Table 7 The effect of vehicular pollution on total chlorophyll (mg/g) contents of selected tree species in the Kumasi Metropolis

Control

1.21 ± 0.01^d

1.53 ± 0.02^d

1.52 ± 0.01^d

1.41 ± 0.03^d

Arterial road I

0.53 ± 0.01^a

0.67 ± 0.03^a

0.97 ± 0.01^c

0.93 ± 0.01^c

Arterial road II

0.84 ± 0.01^b

1.01 ± 0.03^b

0.65 ± 0.01^a

0.58 ± 0.03^a

Arterial road III

1.02 ± 0.01^c

1.13 ± 0.01^c

0.70 ± 0.03^b

0.74 ± 0.01^b