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Table 5 The effect of vehicular air pollution on leaf extracts pH of selected tree species in the Kumasi Metropolis

From: Roadside air pollution in a tropical city: physiological and biochemical response from trees

Sampling siteTree species
Terminalia catappaMangifera indicaFicus platyphyllaPolyalthia longifolia
Control6.15 ± 0.03c6.11 ± 0.01d6.13 ± 0.04d6.75 ± 0.02d
Arterial road I5.48 ± 0.01b5.08 ± 0.04a5.73 ± 0.01c5.73 ± 0.02a
Arterial road II5.09 ± 0.06a5.60 ± 0.01c5.13 ± 0.02a5.85 ± 0.02b
Arterial road III5.10 ± 0.01a5.47 ± 0.01b5.42 ± 0.01b5.95 ± 0.02c
  1. Mean ± SE in the same column with different letters in superscript is significantly different (P < 0.05)