“…It can be noticed that the industrial units of PVC, iron and steel, paper, machinery, gas power, sewage plants, and so forth, are situated north of the suburban site (Figure 1). Several studies have reported that BTEX and acetaldehyde are emitted in significant amounts from PVC, paper mills, coal power plants, landfill, and cement industries (Dave et al., 2020; Evans, 2009; Garcia et al., 1992; Liu et al., 2019; Scott et al., 2020; Tong et al., 2015). In addition, the emission from sewage treatment plants can also be a source of toluene, benzene, xylene, acetone, acetaldehyde and methanol (Byliński et al., 2019; Quigley & Corsi, 1995; Yang et al., 2012).…”