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Compositional assessment of PAHs in sediments of NS SCHs by the number of atomic rings. US EPA Priority 16 PAHs were included within the atomic ring categories, while 1 and 2-methylnapthalene (1-MN and 2-MN) and perylene (pery) excluded. Concentrations of these compounds (1-MN, 2-MN and pery) were included to calculate the total PAH value and subsequently form the remaining percentage for each region.
