“…Also, WWTPs can become the atmospheric sources of some organic pollutants, such as volatile organic compounds (Simonich et al, 2000;Escalasa et al, 2003;Wu et al, 2006), perfluorooctanoic acid (Webster et al, 2010), polyfluoroalkyl compounds (Ahrens et al, 2011) and PAHs (Byrns, 2001;Seth et al, 2008). Recently, intense attention has been paid on PAHs in the atmosphere (Simcik et al, 1999;Park et al, 2002;Omar et al, 2006;Zhang et al, 2011a), as the most carcinogenic, mutagenic and toxic contaminants (Deng et al, 2006).…”