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Mexico City aerosol analysis during MILAGRO using high resolution aerosol mass spectrometry at the urban supersite (T0) – Part 1: Fine particle composition and organic source apportionment
Submicron aerosol was analyzed during the MI- LAGRO field campaign in March 2006 at the T0 urban super- site in Mexico City with a High-Resolution Time-of-Flight Aerosol Mass Spectrometer…
Markedly enhanced absorption and direct radiative forcing of black carbon under polluted urban environments
- Jianfei Peng, Min Hu, Renyi Zhang
- Environmental ScienceProceedings of the National Academy of Sciences
- 28 March 2016
The results indicate that BC under polluted urban environments could contribute significantly to both pollution development and large positive radiative forcing, implying that reduction of BC emissions under polluted environments achieves a cobenefit in simultaneously controlling air pollution and protecting climate, especially for developing countries.
Enhanced light absorption and scattering by carbon soot aerosol internally mixed with sulfuric acid.
- A. Khalizov, H. Xue, Lin Wang, Jun Zheng, Renyi Zhang
- Environmental ScienceThe journal of physical chemistry. A
- 15 January 2009
The results imply that optical properties of soot are significantly altered within its atmospheric lifetime, leading to greater impact on visibility, local air quality, and radiative climate forcing.
Submicron aerosol analysis and organic source apportionment in an urban atmosphere in Pearl River Delta of China using high-resolution aerosol mass spectrometry
 The Pearl River Delta (PRD) region in South China is one of the most economically developed regions in China while also noted for its severe air pollution, especially in the urban environments.…
The roles of sulfuric acid in new particle formation and growth in the mega-city of Beijing
Abstract. Simultaneous measurements of gaseous sulfuric acid and particle number size distributions were performed to investigate aerosol nucleation and growth during CAREBeijing-2008. The analysis…
Atmospheric nanoparticles formed from heterogeneous reactions of organics
Nanoparticles are a key component of atmospheric aerosols, growing rapidly under ambient conditions. Exposure of nanoparticles to organic vapours shows that various organic species can enhance the…
Atmospheric new particle formation from sulfuric acid and amines in a Chinese megacity
Investigation of new particle formation in Shanghai found that the observed concentration of sulfuric acid was high enough to explain the particle growth to ~3 nanometers under the very high condensation sink, whereas the subsequent higher growth rate beyond this size is believed to result from the added contribution of condensing organic species.
Primary sources and secondary formation of organic aerosols in Beijing, China.
The significant SOA enhancement with increasing water uptake and acidification indicates that the aqueous-phase reactions are largely responsible SOA formation in Beijing.
Effects of dicarboxylic acid coating on the optical properties of soot.
- H. Xue, A. Khalizov, Lin Wang, Jun Zheng, Renyi Zhang
- Environmental SciencePhysical chemistry chemical physics : PCCP
- 2 September 2009
The results indicate that the enhancement in the optical properties of soot by transparent coatings is strongly related to the ability of the coating materials to change the morphology ofSoot aggregates.
Use of a mobile laboratory to evaluate changes in on-road air pollutants during the Beijing 2008 Summer Olympics
Abstract. China implemented systematic air pollution control measures during the 2008 Beijing Summer Olympics and Paralympics to improve air quality. This study used a versatile mobile laboratory to…