“…Physico-chemical behavior of particulate polycyclic aromatic hydrocarbons (PAHs) have been extensively investigated in most cities worldwide during the past few years (Dachs et al, 2002;Bartkow et al, 2004;Ciganek et al, 2004;Dallarosa et al, 2005a, b;Fang et al, 2005;Schnelle-Kreis et al, 2005;Pongpiachan, 2006;Wang et al, 2006;Vasilakos et al, 2007;Pongpiachan, 2013a, b;Pongpiachan et al, 2013a, b). PAHs are a group of organic compounds that are generated during the incomplete burning of lignite (Liu et al, 2012), fuels (Lu et al, 2012), volcanic eruption (Schwandner et al, 2013), biomass (Sanchis et al, 2014), garbage (Chen et al, 2013), or other organic substances, such as tobacco (Chalbot et al, 2012).…”