Abstract
Aromatic hydrocarbons and n-alkanes were analyzed in shellfish collected from 13 different sites along the Egyptian Red Sea coast. All samples were analyzed for n-alkanes (C8–C40) and polycyclic aromatic hydrocarbons (EPA list of PAHs). n-Alkanes in shellfish samples from 13 locations were found to be in the range of 71.0–701.1ng/g with a mean value of 242.2±192.1ng/gdrywt. Different indices were calculated for the n-alkanes to assess their sources. These were carbon preference index (CPI), average chain length (ACL), terrigenous/aquatic ratio (TAR), natural n-alkane ratio (NAR) and proxy ratio (Paq). Most of the collected samples of n-alkanes were discovered to be from natural sources. Aromatic hydrocarbons (16 PAHs) from 13 sites varied between 1.3 and 160.9ng/g with an average of 47.9±45.5ng/gdrywt. Benzo(a)pyrine (BaP), a cancer risk assessment, was calculated for the PAHs and resulted in ranges between 0.08 and 4.47 with an average of 1.25ng/gdrywt.
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