Spatial and Temporal Variability of Polycyclic Aromatic Hydrocarbons in Sediments from Yellow River-Dominated Margin

Figure 2

Cross plot of PAHs based on different diagnostic ratios for surface sediments from the Yellow River-dominated continental margin. (a) IcdP/(IcdP + Bpe) versus Fla/(Fla + Pyr); (b) BaA/(BaA + Chr) versus Fla/(Fla + Pyr); (c) MP/P versus Fla/(Fla + Pyr). IcdP: indeno[1,2,3-cd]pyrene; Bpe: benzo[g,h,i]perylene; Fla: fluoranthene; Pyr: pyrene; BaA: benz[a]anthracene; Chr: chrysene; MP: methyl phenanthrenes; P: phenanthrenes. The dash lines represent the thresholds for different sources [1].