Table 2 . Plant tissue moisture content and concentrations of 16 individual PAHs (see methods for abbreviations) in leaf samples from two oil-polluted areas. Units for PAHs: µg kg-1 soil dry weight. Means compared by t-test (for each variable with value greater than zero in both locations). Units for PAHs: µg kg-1plant dry weight. For further information see caption to Table 1.