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High secondary aerosol contribution to particulatepollution during haze events in China
Huang,RJ(Huang,Rujin)[1,2]; Zhang,YL(Zhang,Yanlin)[3,4]; Bozzetti,C(Bozzetti,Carlo)[1]; Ho,KF(Ho,Kin-Fai)[5]; Cao,JJ(Cao,Junji)[2]; Han,YM(Han,Yongming)[2]; Daellenbach,KR(Daellenbach,Kaspar R.)[1]; Slowik,JG(Slowik,Jay G.)[1]; Platt,SM(Platt,Stephen M.)[1]; Canonaco,F(Canonaco,Francesco)[1]; Zotter,P(Zotter,Peter)[1]; Wolf,R(Wolf,Robert)[1]; Pieber,SM(Pieber,Simone M.)[1]; Bruns,EA(Bruns,Emily A.)[1]; Crippa, M(Crippa, Monica)[1]; Ciarelli,G(Ciarelli, Giancarlo)[1]; Piazzalunga,A(Piazzalunga,Andrea)[6]; Schwikowski,M(Schwikowski,Margit)[3,4]; Abbaszade,G(Abbaszade,Gu¨lcin)[7]l; Schnelle-Kreis,J(Schnelle-Kreis,Ju¨rgen)[7]; Zimmermann,R( Zimmermann,Ralf)[7,8]; An,ZS(An,Zhisheng)[2]; Szidat,S(Szidat,So¨nke)[3]; Baltensperger,U(Baltensperger,Urs)[1]; Haddad,IE(Haddad,Imad EI)[1]; Pre´voˆt,ASH(Pre´voˆt,Andre´ S. H.)[1]
Source PublicationNature

Rapid industrialization and urbanization in developing countries has led to an increase in air pollution, along a similar trajectory to that previously experienced by the developed nations. In China, particulate pollution is a serious environmental problem that is influencing air quality, regional and global climates, and human health. In response to the extremely severe and persistent haze pollution experienced by about 800 million people during the first quarter of 2013 (refs 4, 5), the Chinese State Council announced its aim to reduce concentrations of PM2.5 (particulate matter with an aerodynamic diameter less than 2.5 micrometres) by up to 25 per cent relative to 2012 levels by 2017 (ref. 6). Such efforts however require elucidation of the factors governing the abundance and composition of PM2.5, which remain poorly constrained in China. Here we combine a comprehensive set of novel and state-of-the-art offline analytical approaches and statistical techniques to investigate the chemical nature and sources of particulate matter at urban locations in Beijing, Shanghai, Guangzhou and Xi'an during January 2013. We find that the severe haze pollution event was driven to a large extent by secondary aerosol formation, which contributed 30-77 per cent and 44-71 per cent (average for all four cities) of PM2.5 and of organic aerosol, respectively. On average, the contribution of secondary organic aerosol (SOA) and secondary inorganic aerosol (SIA) are found to be of similar importance (SOA/SIA ratios range from 0.6 to 1.4). Our results suggest that, in addition to mitigating primary particulate emissions, reducing the emissions of secondary aerosol precursors from, for example, fossil fuel combustion and biomass burning is likely to be important for controlling China's PM2.5 levels and for reducing the environmental, economic and health impacts resulting from particulate pollution.

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Document Type期刊论文
Affiliation1.Laboratory of Atmospheric Chemistry, Paul Scherrer Institute (PSI), 5232 Villigen, Switzerland;
2.State Key Laboratory of Loess and Quaternary Geology (SKLLQG), and Key Laboratory of Aerosol ChemistryandPhysics, Institute of Earth Environment, Chinese AcademyofSciences, Xi’an 710075, China;
3.Department of Chemistry and Biochemistry, andOeschger Centre for Climate Change Research, University ofBern, 3012 Bern, Switzerland;
4.Laboratory of Radiochemistry and Environmental Chemistry, Paul Scherrer Institute (PSI), 5232 Villigen, Switzerland;
5.The Jockey Club School of Public Health and PrimaryCare, The ChineseUniversity of Hong Kong, Hong Kong, China;
6.Department of Earth and Environmental Sciences,University ofMilano Bicocca,Piazza dellaScienza 1,Milan 20126, Italy;
7.Helmholtz ZentrumMu¨nchen, German Research Center for Environmental Health (GmbH), Joint Mass Spectrometry Centre, Cooperation Group Comprehensive Molecular Analytics and Helmholtz Virtual Institute of ComplexMolecular Systems in Environmental Health — Aerosol and Health (HICE), 85764 Neuherberg, Germany;
8.University of Rostock, Joint Mass Spectrometry Centre, Institute of Chemistry, Analytical Chemistry,18015 Rostock, Germany
Recommended Citation
GB/T 7714
Huang,RJ,Zhang,YL,Bozzetti,C,et al. High secondary aerosol contribution to particulatepollution during haze events in China[J]. Nature,2014,514(7521):218-222.
APA Huang,RJ.,Zhang,YL.,Bozzetti,C.,Ho,KF.,Cao,JJ.,...&Pre´voˆt,ASH.(2014).High secondary aerosol contribution to particulatepollution during haze events in China.Nature,514(7521),218-222.
MLA Huang,RJ,et al."High secondary aerosol contribution to particulatepollution during haze events in China".Nature 514.7521(2014):218-222.
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