Correlation analysis between ∑COMB PAHs and ∑PAH16 in SCH sediments in NS. ∑COMB PAHs is the sum of [Flu, Pyr, BaA, BbF, BkF, BaP, DBahA, BghiP], while ∑PAH16 encompasses the 16 PAHs listed as US EPA priority pollutants. Coefficient of determination (R2) is presented (n=580).