Concentration and chemical characteristics of PM2.5 in Beijing, China: 2001-2002.

Weekly PM2.5 samples were simultaneously collected at a semi-residential (Tsinghua University) and a downtown (Chegongzhuang) site in Beijing from August 2001 through September 2002. The ambient mass concentration and chemical composition of PM2.5 were determined. Analyses including elemental composition, water-soluble ions, and organic and elemental carbon were performed. The annual average concentrations of PM2.5 were 96.5 microg m(-3) and 106.9 microg m(-3) at CGZ and HU site, respectively. More than 80% of the PM2.5 mass concentrations were explained by carbonaceous species, secondary particles, crustal matters and trace elements at the two sites. Carbonaceous species were the most abundant components, constituting about 45% and 48% of the total PM2.5 mass concentrations at CGZ and THU site, respectively. SO4(2-), NO3- and NH4+ were three major ions, accounting for 37%, 23% and 20%, respectively, of the total mass of inorganic water-soluble ions.

[1]  Y. J. Kim,et al.  Characteristics of PM2.5 carbonaceous aerosol in the Sihwa industrial area, Korea , 2001 .

[2]  J Schwartz,et al.  Particulate air pollution and chronic respiratory disease. , 1993, Environmental research.

[3]  Tong Yu,et al.  Identification and estimate of biomass burning contribution to the urban aerosol organic carbon concentrations in Beijing , 2004 .

[4]  Judith C. Chow,et al.  Characteristics of carbonaceous aerosol in Pearl River Delta Region, China during 2001 winter period , 2003 .

[5]  Shixiang Gao,et al.  Characterization of water-soluble species of PM10 and PM2.5 aerosols in urban area in Nanjing, China , 2002 .

[6]  Wang Wei.  Study on pollution characteristics of aerosols during sand-dust storm weather in Beijing , 2002 .

[7]  S. Eisenreich,et al.  Characterization of atmospheric trace elements on PM2.5 particulate matter over the New York-New Jersey harbor estuary , 2002 .

[8]  J. Penner,et al.  Large contribution of organic aerosols to cloud-condensation-nuclei concentrations , 1993, Nature.

[9]  Y. Xue,et al.  Superconductivity above 150 K in HgBa2Ca2Cu3O8+δ at high pressures , 1993, Nature.

[10]  J. Chow,et al.  Results of the "Carbon Conference" International Aerosol Carbon Round Robin Test Stage I , 2001 .

[11]  T. D. Zaiacomo,et al.  Mutagenic activity of total and particle-sized fractions of urban particulate matter , 1996 .

[12]  F. Duan,et al.  Atmospheric aerosol concentration level and chemical characteristics of water-soluble ionic species in wintertime in Beijing, China. , 2003, Journal of environmental monitoring : JEM.

[13]  A. Wexler,et al.  Hydrophobic particles can activate at lower relative humidity than slightly hygroscopic ones: A Köhler theory incorporating surface fixed charge , 1998 .

[14]  D. Dockery,et al.  Acute respiratory effects of particulate air pollution. , 1994, Annual review of public health.

[15]  F. Duan,et al.  Determination of organic carbon and elemental carbon in chinese urban aerosols by using CHN elemental analyzer , 2000 .

[16]  B. R. Appel,et al.  Visibility as related to atmospheric aerosol constituents , 1985 .

[17]  Chen Zonglian,et al.  Measurement and Analysis for Atmospheric Aerosol Particulates in Beijing , 1994 .

[18]  I. Uno,et al.  Seasonal variation in atmospheric aerosols concentration covering northern Kyushu, Japan and Seoul, Korea , 1996 .

[19]  Haizhen Yang,et al.  Concentration and chemical composition of PM2.5 in Shanghai for a 1-year period , 2003 .

[20]  Hélène Cachier,et al.  Determination of atmospheric soot carbon with a simple thermal method , 1989 .

[21]  Y. Kim,et al.  Visibility study in Seoul, 1993 , 1996 .

[22]  D. Ning,et al.  Aerosol size distribution and elemental composition in urban areas of northern China , 1996 .

[23]  W. Wilson,et al.  Ambient Concentrations and Elemental Compositions of PM10 and PM2.5 in Four Chinese Cities , 1999 .

[24]  R. Wyzga,et al.  Air pollution and mortality: issues and uncertainties. , 1995, Journal of the Air & Waste Management Association.

[25]  Concentrations of carbonaceous species in particles at Seoul and Cheju in Korea , 1999 .

[26]  J. W. Winchester,et al.  Fine and coarse aerosol composition in an urban setting: A case study in Beijing, China , 1984 .

[27]  R. Grieken,et al.  Chemical relations between atmospheric aerosols, deposition and stone decay layers on historic buildings at the mediterranean coast , 1997 .

[28]  J. Seinfeld,et al.  Atmospheric Chemistry and Physics: From Air Pollution to Climate Change , 1997 .

[29]  Min Hu,et al.  Seasonal variation of ionic species in fine particles at Qingdao, China , 2002 .

[30]  Kebin He,et al.  The characteristics of PM2.5 in Beijing, China , 2001 .

[31]  Y. Chan,et al.  Source apportionment of visibility degradation problems in Brisbane (Australia) using the multiple linear regression techniques , 1999 .

[32]  J. W. Winchester,et al.  Fine and coarse aerosol composition from a rural area in north China , 1981 .

[33]  H. Tai,et al.  Concentrations and distributions of carbonaceous species in ambient particles in Kaohsiung City, Taiwan , 2001 .

[34]  Risto Hillamo,et al.  Organic and black carbon in PM2.5 and PM10: 1 year of data from an urban site in Helsinki, Finland , 2002 .

[35]  Robert J. Charlson,et al.  Perturbation of the northern hemisphere radiative balance by backscattering from anthropogenic sulfate aerosols , 1991 .

[36]  Kebin He,et al.  The water-soluble ionic composition of PM2.5 in Shanghai and Beijing, China , 2002 .

[37]  C. Chan,et al.  Size distributions and formation of ionic species in atmospheric particulate pollutants in Beijing, China: 1-inorganic ions , 2003 .