Seasonal trends in PM2.5 source contributions in Beijing, China

Polycyclic aromatic hydrocarbons in PM2.5 in Guangzhou, southern China: Spatiotemporal patterns and emission sources

“…In this study, The VE profile was from data collected in Zhujiang Tunnel in Guangzhou [30]. Because of large variations of CC emission factors [5,33] and high uncertainties in BB emissions [34] in PRD, more profiles were selected for these two sources. The BB profiles were obtained from rice straw and sugar cane burning in open field burning in the PRD [31], and from the BB measured in dilution chamber in South Asia [32].…”

Estimation of the direct and indirect impacts of fireworks on the physicochemical characteristics of atmospheric PM<sub>10</sub> and PM<sub>2.5</sub>

“…By scattering and absorbing incoming solar radiation and outgoing terrestrial radiation directly, or by acting as cloudcondensation nuclei and thereby influencing the optical properties of clouds indirectly, atmospheric aerosols can influence the radiation balance of the earth's atmosphere (Lin et al, 2013;Shen et al, 2013). Ambient PM is a complex mixture of components from a variety of sources, including those natural and anthropogenic (Zheng et al, 2005;Zhao et al, 2013a). In recent years, concerns about short-term air quality degradation events and their continuous negative effects on human health has increased, especially for PM pollution caused by high-intensity anthropogenic activities.…”

Spatial-temporal characteristics and determinants of PM2.5 in the Bohai Rim Urban Agglomeration

“…In BTHA, most of the studies about PM 2.5 have been carried out in Beijing. Most studies have focused on the chemical composition (Ye et al 2003;Duan et al 2014), concentrations (Guo et al 2014), seasonal variations (Han et al 2010;Liu et al 2014;Yun et al 2013), or sources (Zheng et al 2005;Peng et al 2013). Zhao et al (2013) analyzed the characteristics of concentrations and chemical composition of PM 2.5 in the BTHA with the data of four urban monitoring sites (Gu et al 2014).…”