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B[a]A/(B[a]A + Chry) ratio plotted against the I[c,d]P/(I[c,d]P + B[g,h,i]P ratio on a scatter plot for marine product subsamples. Reference ranges for diagnostic ratios were applied (Yan et al., 2005). B[a]A stands for Benz[a]pyrene, whereas Chry, Indeno[1,2,3-cd]pyrene, and B[g,h,i]P stand for Benzo[g,h,i]perylene
