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Distribution of polycyclic aromatic hydrocarbons (PAHs) in commonly consumed seafood from coastal areas of Bangladesh

Publication Date - 2019-01-23 00:00:00

Publication Title : Distribution of polycyclic aromatic hydrocarbons (PAHs) in commonly consumed seafood from coastal areas of Bangladesh

Publicationed By : Dr. Md Saiful Islam

Publication Publication Date : 2019-01-23 00:00:00

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Publication Description :

Levels, distribution, possible sources and  potential risks of 16 USEPA priority polycyclic  aromatic hydrocarbons (PAHs) were investigated  comprehensively in frequently consumed seafood  species collected from the coastal areas of Bangladesh.  Samples were collected in winter and summer, 2015.  The total concentration of PAHs (PPAHs) in the  examined seafood was 184.5–2806.6 ng/g wet weight  (ww) in winter and 117.9–4216.8 ng/g ww in summer,  respectively. The levels of PPAHs were comparable  to or higher than those reported from other coastal  areas. Seasonal variation was not significant for the  majority of the monitored PAHs. Spatial distribution  revealed that the seafood collected from areas with  recent urbanization and industrialization (Chittagong,  Cox’s Bazar and Sundarbans) was more contaminated  with PAHs than those from the unindustrialized area  (Meghna Estuary). Low-molecular-weight isomers  dominated the PAH composition. Molecular ratios  suggested the abundance of mixed sources of PAHs in  the Bangladeshi coastal areas with a slight imposition  toward the petrogenic origin. A preliminary evaluation  of human health risk indicated that the dietary PAH  exposure from consumption of Bangladeshi seafood  would certainly induce adverse health effects. This  finding suggests the need to enhance risk management  regarding seafood consumption through public advisory  in Bangladesh.

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