[Characteristics and Source Apportionment of VOCs of High Pollution Process at Chemical Industrial Area in Winter of China].

Online GC was adopted to monitor VOCs of high pollution process near a chemical industrial area in winter. PMF model was used to identify the major sources of VOCs and evaluate their contributions. The result showed that the main components during the period of observation were toluene, xylene, C3-C4 hydrocarbon and chloroform, etc.

[Characteristics and sources of organic carbon and elemental carbon in PM2.5 in Shanghai urban area].

Organic carbon (OC) and elemental carbon (EC) in PM2.5 samples collected in Shanghai urban area during June 2010 to May 2011 were analyzed with IMPROVE-TOR protocol. The results showed that the annual average concentrations of OC and EC in PM2.

[Estimation of the formation potential of ozone and secondary organic aerosol in Shanghai in spring].

The concentration and speciation of ambient volatile organic compounds (VOCs) in Shanghai downtown and suburban areas were analyzed and measured by using online gas chromatography with flame ionization detection systems (GC-FID) during the spring period (from Mar. 1st to Mar. 31st, 2013) and 55 kinds of VOCs were detected.

[Secondary aerosol formation through photochemical reactions estimated by using air quality monitoring data in the downtown of Pudong, Shanghai].

Analyses of diurnal patterns of PM10 in the downtown of Pudong, Shanghai have been performed in this study at different daily ozone maximum concentrations (O(3,max)) from May to October, 2010. In order to evaluate secondary aerosol formation at different ozone levels, CO was used as a tracer for primary aerosol, and 0(3, max) was used as an index for photochemical activity. Results show that along with increasing of O3 concentration, the concentration of primary and secondary aerosol was increased respectively from 0.

[Characteristics of ambient VOCs and their role in O3 formation: a typical air pollution episode in Shanghai urban area].

The concentration, speciation and chemical reactivity of ambient volatile organic compounds (VOCs) in shanghai city were analyzed and measured by using online gas chromatography with flame ionization detection systems (GC-FID) during a typical air pollution episode (from Oct. 30th to Nov. 2nd, 2010) and 55 kinds of VOCs were detected.