Abstract
Environment in India is contaminated with polycyclic aromatic hydrocarbons (PAHs) due to occurring of large anthropogenic activities i.e. fuel combustion, mineral roasting and biomass burning. Hence, contamination of 13 toxic PAHs: phenanthrene, anthracene, fluoranthene, pyrene, benz (a) anthracene, ben-zo (b) fluoranthene, benzo (k) fluoranthene, benzo (a) pyrene, benzo (ghi) perylene, dibenz (ah) anthracene, indeno1,2,3-(cd) pyrene, coronene and coronene in the environment (i.e. ambient particulate matter, road dust, sludge and sewage) of the most industrialized area: Raipur city, India is described. The ΣPAH13 concentration in the 16 environment materials was ranged from 7980 - 1,051,300 μg/kg with mean value of 172,613 ± 154,726 μg/kg. The concentration variations, toxicities and sources of the PAHs in various environmental compartments are discussed.
Highlights
Polycyclic aromatic hydrocarbons (PAHs) are a large group of chemical compounds, I, with a similar structure comprising two or more joined aromatic carbon rings [1]
Very low content of organic carbon (OC) and carbonate carbon (CC) was observed in the dust, sludge and sewage samples unlikely to PM samples may be due to their degradation and water solubility, Figure 1
The sum of total concentration of PAHs (ΣPAH13) in the road dust of Raipur city (n = 8) was ranged from 10,427 - 26,031 μg/kg with mean value of 15,282 ± 3377 μg/kg
Summary
Polycyclic aromatic hydrocarbons (PAHs) are a large group of chemical compounds, I, with a similar structure comprising two or more joined aromatic carbon rings [1]. These compounds differ substantially in their physical, chemical and toxicological properties and their quantification in the environment is needed. The most potent carcinogens have been shown to be benzo [a] anthracene, benzo [a] pyrene and dibenz [ah] anthracene They are multimedia contaminants, reported at elevated levels in several environmental samples i.e. dust, particulate matter, sludge and sewage of various region of the World [4]-[26]
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