A comparative study of the organic matter in PM2.5 from three Chinese megacities in three different climatic zones

A wintertime study of polycyclic aromatic hydrocarbons in PM2.5 and PM2.5–10 in Beijing: Assessment of energy structure conversion

“…In addition, the ratio of InP/(InP + BghiP) has been widely used to distinguish PAHs emission from traffic and coal burning. Ratios of 0.18, 0.37 and 0.56 were reported for gasoline vehicles, diesel vehicles and coal burning, respectively [12,13,25]. In this study, the ratio of InP/(InP + BghiP) was between 0.34 and 1 with mean of 0.6 for PM 2.5 , 0.29 to 0.97 with 0.51 as average for PM 2.5-10 , indicating a mixed emission of engine exhaust and coal burning in winter [20].…”

“…The lowest concentration detected was at a residential area (site bj-1) and a commercial zone (bj-2) in the northwest part for PM 2.5 and PM 2.5-10 separately. Average concentration of individual PAHs in PM 2.5 and PM 2.5-10 (Table 1) [12]. To investigate the interannual difference of individual PAHs, least significant difference (LSD) method was used.…”

“…Hence, it is necessary to monitor the air quality concurrent. Several studies on PAHs in aerosol in Beijing have been reported recently [7,[12][13][14]. However, these reports focus on limited sites in this city, which cannot illustrate the general pollution level of Beijing.…”

Polycyclic aromatic hydrocarbons (PAHs) in continental shelf sediment of China: Implications for anthropogenic influences on coastal marine environment

“…Therefore, the different compositional profiles (Fig. 3) were likely to be caused by the region-specific source profiles and/or regional difference of gas-particle partitioning which was a function of ambient temperature (Feng et al, 2006;Liu et al, 2007b). Other unknown factors, such as benthic biota, possibly accounted for the spatial differences of PAHs (Rust et al, 2004).…”

Atmospheric polycyclic aromatic hydrocarbons in rural and urban areas of northern China

“…High concentrations of PAHs were extensively detected around this country (Bi et al, 2003;Guo et al, 2003;Feng et al, 2006a;Feng et al, 2006b;Li et al, 2006;Luo et al, 2010), inducing elevated lung cancer risk to Chinese population via inhalation exposure (Zhang et al, 2009). PAHs released in China could also be dispersed rapidly through air, and many recent studies have shown that the elevated PAH concentrations are monitored in surrounding countries and continents located downwind of China, including Korea, Japan, and North America, which can be attributed to the outflow of PAHs from China under certain meteorological conditions (Killin et al, 2004;Lee et al, 2006;Tamamura et al, 2007;Lang et al, 2008).…”