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| 1 | Particle number concentration, size distribution and chemical composition during haze and photochemical smog episodes in Shanghai显示文摘The aerosol number concentration and size distribution as well as size-resolved particle chemical composition were measured during haze and photochemical smog episodes in Shanghai in 2009.The number of haze days accounted for 43%,of which 30%was severe(visibility<2 km)and moderate(2 km≤visibility<3 km)haze,mainly distributed in winter and spring.The mean particle number concentration was about 17,000/cm3in haze,more than 2 times that in clean days.The greatest increase of particle number concentration was in 0.5–1μm and 1–10μm size fractions during haze events,about 17.78times and 8.78 times those of clean days.The largest increase of particle number concentration was within 50–100 nm and 100–200 nm fractions during photochemical smog episodes,about 5.89 times and 4.29 times those of clean days.The particle volume concentration and surface concentration in haze,photochemical smog and clean days were102,49,15μm3/cm3and 949,649,206μm2/cm3,respectively.As haze events got more severe,the number concentration of particles smaller than 50 nm decreased,but the particles of 50–200 nm and 0.5–1μm increased.The diurnal variation of particle number concentration showed a bimodal pattern in haze days.All soluble ions were increased during haze events,of which NH4+,SO42-and NO3-increased greatly,followed by Na+,K+,Ca2+and Cl-.These ions were very different in size-resolved particles during haze and photochemical smog episodes. | Xuemei Wang Jianmin Chen Tiantao Cheng Renyi Zhang Xinming Wang | 2014 | Journal of Environmental Sciences2014，26，9： | 17 |
| 2 | Chemical properties and origin of dust aerosols in Beijing during springtime显示文摘Ground observation of dust aerosols was conducted in Beijing in the spring of 2005 in order to investigate the element composition and origin of mineral dust. Mass concentrations of most mineral elements of particles increased during dust events. Mineral elements were predominant in the sums of total element loadings in both dusty and non-dusty days. Mg, Si, Fe, Al or Ti can be used as an indicator of dust out?ow; Cl can be viewed as an evidence of dust particles mixing with anthropogenic emissions. Mineral and pollutant elements showed a bimodal mass particle-size distribution (MSD) in non-dusty days, and a trimodal distribution in dusty days, but their peak concentrations fell in different size stages. Zn and S were mainly enriched in fine particles, whereas Cl was enriched in medium particles, but most mineral elements and Cu were enriched in coarse particles. Mineral elements were dominated by crustal material in dusty even non-dusty days, but pollutant elements were from non-crustal material including local and remote sources. Back trajectory analysis indicated that dust particles in Beijing mainly originated from the Gobi and desert regions of Mongolian and northern China. | Renjian Zhang Zhiwei Han Tiantao Cheng Jun Tao | 2009 | Particuology2009，7，1： | 13 |
| 3 | Optical properties and chemical composition of PM_(2.5) in Shanghai in the spring of 2012显示文摘The semi-diurnal mean aerosol mass concentration, chemical composition, and optical properties of PM2.5were investigated in Shanghai during the spring of 2012. Slight pollution was observed during the study period. The average PM2.5 concentration was 64.11 土 22.83(xg/m3. The mean coefficients of extinction,scattering, and absorption at 532 nm were 125.9 士 78.5,91.1 士 56.3,and 34.9 士 23.6 Mm-1, respectively. A relatively low mean single scattering albedo at 532 nm(0.73 士 0.04) and low level of elemental carbon(EC,2.67 士 1.96 |xg/m3) suggested that the light absorption was enhanced due to the internal mixing of the EC.Sulfate contributed the most to aerosol light scattering in Shanghai. The chemical composition of PM2.5was dominated by particulate organic matter, sulfate, nitrate, ammonium, and EC. Anthropogenic sources made a significant contribution to the emission and loading of the particulate pollutants. A relatively good correlation between the aerosol chemical composition and the cloud condensation nuclei(CCN) activation indicated that aerosol chemistry is an important factor that influences the saturated hygroscopicity and growth of the aerosol. | Guanghan Huang Tiantao Cheng Renjian Zhang Jun Tao Chunpeng Leng Yunwei Zhang Shuping Zha Deqin Zhang Xiang Li Chunyang Xu | 2014 | Particuology2014，12，2： | 4 |
| 4 | Comparison of aerosol characteristics during haze periods over two urban agglomerations in China using CALIPSO observations显示文摘 | Qiong Liu Xiaojun Ma Yanrong Yu Yan Qin Yonghang Chen Yanming Kang Hua Zhang Tiantao Cheng Yan Ling Yujie Tang | 2017 | Particuology2017，15，4： | 2 |
| 5 | Impacts of biomass-burning on aerosol properties of a severe haze event over Shanghai显示文摘Anthropogenic aerosols have significant impacts on the environment and human health in the Yangtze River Delta region,one of the most densely populated regions in the world.A biomass-burning plume swept across this area(Shanghai) in May 2009,leading to changes in the physical and optical properties of aerosols,which were investigated using ground-based remote sensing and in situ measurements via comparisons with dust pollution and background conditions.Experiments show that the biomass-burning plume led to an increase in the average aerosol optical depth(AOD) at 500 nm from 0.73 to 1.00(37%higher),an absorption Angstrom exponent(AAE) of 1.48,and an increase in the Angstrom exponent(α) up to 1.53.Furthermore,local dust aerosols derived from road dust and/or construction dust also led to higher values of AOD(2.68) and AAE(2.16),and a daily average value of α of 1.05.For the biomass-burning plume,the aerosol particles exhibited significant variations in short-wavelength spectra.The single scattering albedo at 670 nm decreased remarkably under the influence of the biomass-burning plume,indicating the significant absorptive ability of the biomass-burning pollution and higher ratio of absorption aerosols within the plume.Under the effects of the biomass-burning,the volume concentration of fine-mode aerosols increased significantly and the PM-fine/PM-coarse volume concentration ratio reached 12.33.This relatively large change in fine-mode particles indicates that biomass-burning has a greater impact on fine-mode aerosols than on coarse-mode aerosols. | Qianshan He Xiaoyan Zhao Jing Lu Guangqiang Zhou Hequn Yang Wei Gao Wei Yu Tiantao Cheng | 2015 | Particuology2015，13，3： | 2 |
| 6 | Insights into summertime haze pollution events over Shanghai based on online water-soluble ionic composition of aerosols显示文摘 | Huanhuan Du Lingdong Kong Tiantao Cheng Jianmin Chen Jianfei Du Ling Li Xiangao Xia Chunpeng Leng Guanghan Huang | 2011 | Atmospheric Environment2011，，29： | 2 |
| 7 | Physical characterization of aerosol particles during the Chinese New Year’s firework events显示文摘 | Min Zhang Xuemei Wang Jianmin Chen Tiantao Cheng Tao Wang Xin Yang Youguo Gong Fuhai Geng Changhong Chen | 2010 | Atmospheric Environment2010，，39： | 1 |
| 8 | Physical characterization of aerosol particles during the Chinese New Year’s firework events显示文摘 | Min Zhang Xuemei Wang Jianmin Chen Tiantao Cheng Tao Wang Xin Yang Youguo Gong Fuhai Geng Changhong Chen | 2010 | Atmospheric Environment2010，，39： | 1 |
| 9 | A la-boratory study of agricultural crop residue combustion in Chi-na: emission factors and emission inventory 显示文摘 | ZHANG Hefang YE Xingnan CHENG Tiantao | 2008 | AtmosphericEnvironment2008，42，36： | 1 |
| 10 | A laboratory study of agricultural crop residue combustion in China:Emission factor and emission inventory显示文摘 | Zhang Hefeng Ye Xingnan Cheng Tiantao | 2008 | Atmospheric Environment2008，42，36： | 1 |
| 11 | Optical properties and chemical composition of PM 2.5 in Shanghai in the spring of 2012显示文摘 | Guanghan Huang Tiantao Cheng Renjian Zhang Jun Tao Chunpeng Leng Yunwei Zhang Shuping Zha Deqin Zhang Xiang Li Chunyang Xu | 2013 | Particuology2013，，： | 1 |
| 12 | Alaboratory study of agricultural crop residue combustionin China: Emission factor and emission inventory 显示文摘 | Zhang Hefeng Ye Xingnan Cheng Tiantao | 2008 | Atmospheric Environment2008，42，36： | 1 |
| 13 | NSI into ammonium particle-to-gas conversion based on chemical coupling between non-sulfate ammonium and nitrate or nitrate plus chloride显示文摘 | Du Huanhuan Kong Lingdong Cheng Tiantao | 2010 | Aerosol and Air Qual- ity Research2010，10，6： | 1 |
| 14 | Insights into summertime haze pollution events over Shanghai based on online water-soluble ionic composition of aerosols 显示文摘 | DU Huanhuan KONG Lingdong CHENG Tiantao | 2011 | AtmosEnviron2011，45，： | 1 |
| 15 | Climatology of aerosol optical properties in northern China显示文摘 | Cheng Tiantao Wang Hua Xu Yongfu | 2006 | Atmospheric Environment2006，40，8： | 1 |
| 16 | Insights into summer time haze pollution events over Shanghai based on online water-soluble ionic composition of aerosols 显示文摘 | Huanhuan Du Lingdong Kong Tiantao Cheng | 2011 | Atmospheric Environment2011，，45： | 1 |
| 17 | , Measurements of surface cloud condensation nuclei and aerosol activity in downtown Shanghai 显示文摘 | Leng Chunpeng Cheng Tiantao Chen Jianmin | 2013 | Atmospheric Environment2013，，69： | 1 |
| 18 | A comparison of dust properties between China continent and Korea,Japan in East Asia显示文摘 | Yu Xingna Cheng Tiantao Chen Jianmin | 2006 | Atmospheric Environment2006，40，30： | 1 |
| 19 | Laboratory simulation of SO_2 heterogeneous reactions on hematite surface under different SO_2 concentrations显示文摘The variations of sulfate formation and optical coefficients during SO2 heterogeneous reactions on hematite surface under different SO2 concentrations were examined using in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) and ion chromatograph (IC). Laboratory experiments revealed that within ambient SO2 of 0.51–18.6 ppmv, sulfate product, producing velocity, absorption and backward scattering coefficients showed an increasing trend with SO2 concentration. Under given SO2 concentration, the velocity of sulfate producing performed an evolution of initial increasing, midterm decreasing and final stabilizing. The reactive uptake and Brunauer-Emmett-Teller (BET) uptake coefficients of heterogeneous reactions rose with SO2 and exhibited high reactivities. Considering global warming, this result is important for the knowledge of heterogeneous reactions of SO2 on mineral particle surface in the atmosphere and the assessment of their impacts on radiative forcing. | CUI Huxiong CHENG Tiantao YU Xingna CHEN Jianmin XU Yongfu FANG Wen | 2009 | Journal of Environmental Sciences2009，21，8： | 1 |
| 20 | A comparison of dust properties between China continent and Korea,Japan in East Asia显示文摘 | YU Xingna CHENG Tiantao CHEN Jianmin | 2006 | Atmospheric Environment2006，40，： | 1 |
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