Figure 6From: Distribution of polycyclic aromatic hydrocarbons in subcellular root tissues of ryegrass (Lolium multiflorumLam.)Subcellular fraction concentration factors (SFCF) of phenanthrene (a) and pyrene (b) for ryegrass root uptake as a function of time 0~240 h. SFCF was defined as the ratio of PAH concentration in subcellular fractions including cell wall and organelle to that in cell water-soluble components.Back to article page