中科院地环所与国外合作完成关于二次气溶胶的源解析发表在nature上

deanchen

High secondary aerosol contribution to particulate pollution during haze events in China，一作为华人青年科学家

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deanchen

High secondary aerosol contribution to particulate
pollution during haze events in China
Ru-Jin Huang1,2*, Yanlin Zhang3,4, Carlo Bozzetti1, Kin-Fai Ho5, Jun-Ji Cao2, Yongming Han2, Kaspar R. Daellenbach1,
Jay G. Slowik1, Stephen M. Platt1, Francesco Canonaco1, Peter Zotter1, RobertWolf1, Simone M. Pieber1, Emily A. Bruns1,
Monica Crippa1{, Giancarlo Ciarelli1, Andrea Piazzalunga6, Margit Schwikowski3,4, Gu¨lcin Abbaszade7, Ju¨rgen Schnelle-Kreis7,
Ralf Zimmermann7,8, Zhisheng An2, So¨nke Szidat3, Urs Baltensperger1, Imad El Haddad1* & Andre′ S. H. Pre′voˆt1
Abstract
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 nations1. In China,
particulate pollution is a serious environmental problem that is
influencing air quality, regional and global climates, and human
health2,3. 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 China3,7,8.
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/SIAratios
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.

kongfeng0824

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deanchen

kongfeng0824 发表于 2014-9-18 19:47
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hugo

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hugo

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浪子

呵呵 好东西 谢谢分享！