| Abstrakt: |
Polycyclic aromatic hydrocarbons (PAHs) are known for environmental persistence and causes for eco toxicological effects. They release mainly during combustion processes, and ubiquitously distributed in the environment matrices including air, soil, water, and sediment. Sediments are considered as sink and re-emission sources in tropical climates. During the past 20 years, PAH contaminations in sediments are reported from various locations in India. However, no inclusive review for their input sources and health risk is available. Data reported during 2006–2021 on PAHs in sediments from different sources of wide geographical location in India is retrieved, compiled, and analyzed. The observations of the data analyzed in this review provide conclusive information on their sources, spatial variability, and risk in Indian sediments. The review article briefly reviews the various methods suitable for resource apportionment and health risk assessment. Identification of sources shows predominance of pyrogenic to the east and petrogenic to the west zone of India. Based on recommended methodologies, quantitative cancer risks, ecological risks, and biological health risks were evaluated and discussed. The assessment indicated that the population may have been exposed to higher levels of PAH at the west, north, and south region sampling sites. Because of the health impact of PAHs, additional studies that include more toxic PAHs (such as 7H-benzo[c]pyrene and dibenzopyrene derivatives) than BaP in sediments from larger geographic regions of India are recommended. [ABSTRACT FROM AUTHOR] |
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