Figure 2From: Accumulation of phenanthrene by roots of intact wheat (Triticum acstivnmL.) seedlings: passive or active uptake?Concentration dependence of phenanthrene uptake into intact wheat roots. Phenanthrene concentrations varied from 0 to 6.74 μM in Hoagland nutrient solutions (pH 5.5). Data points represent mean and SD values of triplicates. Error bars do not extend outside all data points. fr wt, Fresh weight.Back to article page