Table 8 The effect of vehicular air pollution on of carotenoids (mg/g) contents of selected tree species in the Kumasi Metropolis

Control

0.19 ± 0.01^b

0.17 ± 0.02^b

0.19 ± 0.01^b

0.18 ± 0.02^a

Arterial road I

0.12 ± 0.03^a

0.14 ± 0.03^ab

0.16 ± 0.01^ab

0.17 ± 0.01^a

Arterial road II

0.16 ± 0.03^b

0.12 ± 0.01^a

0.14 ± 0.01^a

0.14 ± 0.01^a

Arterial road III

0.11 ± 0.02^a

0.13 ± 0.01^ab

0.14 ± 0.01^a

0.15 ± 0.02^a