A Review on Deposition, Distribution of Polycyclic Aromatic Hydrocarbons in Different Environmental Matrix and Study its Toxicity and Carcinogenic Effect

摘要

The main objectives of review work are to establish an association of polycyclic aromatic hydrocarbons (PAHs) signatures in bulk deposition in soil, street dust, river water and sediment. Polycyclic aromatic hydrocarbons are a unique class of organic pollutants containing 2 or more fused aromatic rings, which are very lethal and potent carcinogens. They are extensively studied compounds and their occurrence has been reported from various places over the world which indicates their ubiquitous nature. USEPA has already listed 16 PAHs as most priority ones to be analyzed in various environmental matrices. From the literature survey, it might be concluded that meteorological parameters played a significant role in atmospheric deposition of PAHs with temperature dependent scavenging for low molecular weight polycyclic aromatic hydrocarbons. The exposure risk for PAHs in all the environmental matrices was found to be the maximum during dry season. Finally, atmospheric bulk deposition was revealed as a significant contributor to other environmental matrices of the environment.