Aerosol optical properties and related chemical apportionment at Xinken in Pearl River Delta of China

Carbonaceous and Secondary Inorganic Aerosols during Wintertime Fog and Haze over Urban Sites in the Indo-Gangetic Plain

“…Thus, relatively higher b abs at Allahabad are attributed to the higher EC mass concentrations. The σ abs values, obtained in the present study, are relatively higher compared to those reported over Chinese regions; for example 7.7 m 2 /g (in PM 2.5 samples collected at urban Guangzhou) (Andreae et al, 2008), 9.3 ± 1.4 m 2 /g (for PM 1.0 ) at urban Xinken (Cheng et al, 2008) and 8.45 ± 1.7 m 2 /g for aerosol over Bejing during wintertime (Cheng et al, 2011). There is a lack of scattering coefficient (b scat ) measurements over northern India.…”

Mixing state of biomass burning particles by single particle aerosol mass spectrometer in the urban area of PRD, China

“…Rapid urbanization and industrialization in the last few decades have caused substantial atmospheric pollution. The Program of Regional Integrated Experiments of Air Quality over Pearl River Delta (PRIDE-PRD) was conducted in 2004 and 2006 to observe the chemical and physical processes controlling the key parameters of aerosol, including chemical composition, size distribution, and optical properties in the PRD region (Cheng et al, 2008;Hua et al, 2008;Zhang et al, 2008;Sugimoto et al, 2009;Xiao et al, 2009). The previous studies utilizing conventional filter aerosol sampling techniques showed that biomass burning had a strong impact on the air quality of the PRD region (Hagler et al, 2006;Wang et al, 2007;Bi et al, 2008).…”

Characteristics of individual particles in the atmosphere of Guangzhou by single particle mass spectrometry

“…Many measurements have shown that carbonaceous aerosols, sulfate and nitrate represent predominant fractions of fine particles, and significantly contribute to the regional haze formation in the PRD region (e.g., Andreae et al, 2008;Chan and Yao, 2008). Mixing state involving these compositions plays a substantially important role on the light extinction of ambient aerosols (Cheng et al, 2008;Yu Atmospheric Research 153 (2015) 286-295 et al, 2010). However, mixing state of atmospheric aerosols, relying on single particle measurement, remains poorly understood in the PRD region, since previous measurements were primarily based on bulk aerosol filter samples that represent average chemical compositions (Chan and Yao, 2008;Tan et al, 2009;Tao et al, 2012).…”