Concentrations and source identification of priority polycyclic aromatic hydrocarbons in sediment cores from south and northeast Thailand

Sources, Occurrences, and Risks of Polycyclic Aromatic Hydro-Carbons (PAHs) in Bangladesh: A Review of Current Status

“…The sources of PAHs in airborne p cles mainly originate from coal combustion, petroleum, and biomass resulting from w disposal [52]. When comparing sources of PAH pollution in other countries, similar terns were identified [53][54][55][56][57][58]. For instance, in the coastal areas of China, dominant sou of PAH pollution included coal, wood, and straw combustion.…”

“…In Nigeria, PAH sources comprised automobile repair industries, waste dumping, oil spills, and shipbreaking. Similarly, petroleum burning and transport in Iran, biomass burning in Thailand, oil refineries in Iraq, and petroleum combustion in India emerged as major sources of PAH pollution in sediments [54][55][56][57][58]. Overall, global sources of PAH pollution exhibited similarities across most countries, with petroleum contamination being the predominant source in Bangladesh.…”

“…Polycyclic aromatic hydrocarbons (PAHs) are common organic pollutants in sediments worldwide [54][55][56][57][58]. Due to their hydrophobic characteristics, these compounds are settled in the sediment of aquatic environments [53].…”

“…The deposition of PAHs in sediment is a continuous process that can indicate environmental changes in pollutants in sediments over time [59]. In these circumstances, the research on PAHs in sediment can evaluate the PAHs cycles in sediments, historical trends, accumulation, and risks to aquatic ecosystems [50][51][52][53][54][55][56][57][58][59][60]. The studies of PAHs pollution in sediment in Bangladesh suggest that coastal sediment had the highest PAHs concentration compared to urban and river sediments (Table 1).…”

Impacto da queima de biomassa na concentração de compostos policíclicos aromáticos e na toxicidade >i<in vitro>/i< do material particulado atmosférico de Ribeirão Preto-SP

“…Polycyclic aromatic hydrocarbons (PAHs) are a class of organic compounds formed by carbon and hydrogen atoms, with chemical structures consisting of two or more aromatic rings condensed together . They are widespread environmental contaminants present in different compartments, such as air, soils, sediments and agricultural products (Pongpiachan, 2022;Pongpiachan et al, 2022a). PAHs derivatives such as nitrated PAHs (NPAHs) and oxygenated PAHs (OPAHs) have substitutions of one or more hydrogen atoms by oxygen and nitrogen atoms, respectively .…”