The physicochemical properties of aerosol and its pollution characteristics in different periods in spring in Chengdu
LIU Qin1, ZHANG Jun-ke1, HUANG Xiao-juan2, LUO Jin-qi1, LUO Bin3, ZHANG Wei3, SONG Hong-yi1
1. Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China;
2. Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, School of Atmospheric Sciences, Chengdu University of Information Technology, Chengdu 610225, China;
3. Sichuan Environmental Monitoring Center, Chengdu 610074, China
A continuous observation of air pollution was made in Chengdu using single particle aerosol mass spectrometer (SPAMS) and a variety of online devices in spring of 2017. The results showed that the average mass concentrations of PM2.5 and PM10 were (62±25) and (90±40)μg/m3, respectively. Single particles in the atmosphere can be divided into eight classes. Due to the differences in emission sources and aging process, there were obvious differences in mass spectrum characteristics and particle size distribution among all particle classes. The comparative analysis of the selected fine particle pollution, mixed pollution of fine and coarse particles (mixed pollution) and clean periods showed that:(1) the contribution of potassium-elemental carbon (KEC) particles was the highest in the fine particle pollution periods (42.8%~46.3%). Compared with the clean period, the contribution of carbonaceous particles from combustion process decreased in the mixed pollution period, but the contribution of DUST particles reached the highest of all periods. (2) Compared with the clean period, the mixing degree of most particles with secondary inorganic components in other two types of periods enhanced. (3) The air masses from the southwest of Chengdu dominated in fine particle pollution periods, the heavily polluted areas in southern Sichuan contributed greatly to the pollution process in Chengdu.
刘琴, 张军科, 黄小娟, 罗进奇, 罗彬, 张巍, 宋宏艺. 成都春季气溶胶理化性质及不同时段污染特征[J]. 中国环境科学, 2019, 39(12): 5009-5017.
LIU Qin, ZHANG Jun-ke, HUANG Xiao-juan, LUO Jin-qi, LUO Bin, ZHANG Wei, SONG Hong-yi. The physicochemical properties of aerosol and its pollution characteristics in different periods in spring in Chengdu. CHINA ENVIRONMENTAL SCIENCECE, 2019, 39(12): 5009-5017.
Wang H, Tian M, Chen Y, et al. Seasonal characteristics, formation mechanisms and source origins of PM2.5 in two megacities in Sichuan basin, China[J]. Atmospheric Chemistry and Physics, 2018,18(2):865-881.
[2]
Tao J, Gao J, Zhang L, et al. PM2.5 pollution in a megacity of southwest China:Source apportionment and implication[J]. Atmospheric Chemistry and Physics, 2014,14(16):8679-8699.
[3]
Sun Y L, Jiang Q, Wang Z F, et al. Investigation of the sources and evolution processes of severe haze pollution in Beijing in January 2013[J]. Journal of Geophysical Research:Atmospheres, 2014,119(7):4380-4398.
[4]
Wang Y, Yao L, Wang L, et al. Mechanism for the formation of the January 2013 heavy haze pollution episode over central and eastern China[J]. Science China Earth Sciences, 2014,57(1):14-25.
[5]
Xiao K, Wang Y, Wu G, et al. Spatiotemporal characteristics of air pollutants (PM10, PM2.5, SO2, NO2, O3, and CO) in the inland basin city of Chengdu, southwest China[J]. Atmosphere, 2018,9(2):74.
[6]
Li L, Huang Z X, Dong J G, et al. Real time bipolar time-of-flight mass spectrometer for analyzing single aerosol particles[J]. International Journal of Mass Spectrometry, 2011,303(2/3):118-124.
[7]
李梅,李磊,黄正旭,等.运用单颗粒气溶胶质谱技术初步研究广州大气矿尘污染[J]. 环境科学研究, 2011,24(6):632-636. Li M, Li L, Huang Z X, et al. Preliminary study of Guangzhou atmospheric mineral dust pollution by single particle aerosol mass spectrometry[J]. Environmental Science Research, 2011,24(6):632-636.
[8]
刘文彬,黄祖照,陈彦宁,等.广州市春季一次沙尘天气过程综合观测[J]. 中国环境监测, 2017,33(5):42-48. Liu W B, Huang Z Z, Chen Y N, et al. Comprehensive observation of dust weather process during spring in Guangzhou[J]. China Environmental Monitoring, 2017,33(5):42-48.
[9]
周静博,任毅斌,洪纲,等.利用SPAMS研究石家庄市冬季连续灰霾天气的污染特征及成因[J]. 环境科学, 2015,36(11):3972-3980. Zhou J B, Ren Y B, Hong G, et al. Using SPAMS to study the pollution characteristics and causes of continuous grey haze in winter in Shijiazhuang[J]. Environmental Science, 2015,36(11):3972-3980.
[10]
Xu L, Lingaswamy A P, Zhang Y, et al. Morphology, composition, and sources of individual aerosol particles at a regional background site of the YRD, China[J]. Journal of Environment Sciences (China), 2019, 77:354-362.
[11]
An Z, Huang R J, Zhang R, et al. Severe haze in northern China:A synergy of anthropogenic emissions and atmospheric processes[J]. Proceedings of the National Academy of Sciences of the United States of America, 2019,116(18):8657-8666.
[12]
Wang Y C, Huang R J, Ni H Y, et al. Chemical composition, sources and secondary processes of aerosols in Baoji city of northwest China[J]. Atmospheric Environment, 2017,158:128-137.
[13]
Wang G H, Zhang R Y, Gomez M E, et al. Persistent sulfate formation from London fog to Chinese haze[J]. Proceedings of the National Academy of Sciences of the United States of America, 2016,113(48):13630-13635.
[14]
Wu Z, Wang Y, Tan T, et al. Aerosol liquid water driven by anthropogenic inorganic salts:Implying its key role in haze formation over the north China plain[J]. Environmental Science & Technology Letters, 2018,5(3):160-166.
[15]
Zhang X, Zhong J, Wang J, et al. The interdecadal worsening of weather conditions affecting aerosol pollution in the Beijing area in relation to climate warming[J]. Atmospheric Chemistry and Physics, 2018,18(8):5991-5999.
[16]
Zhong J, Zhang X, Dong Y, et al. Feedback effects of boundary-layer meteorological factors on cumulative explosive growth of PM2.5 during winter heavy pollution episodes in Beijing from 2013 to 2016[J]. Atmospheric Chemistry and Physics, 2018,18(1):247-258.
[17]
Petaja T, Jarvi L, Kerminen V M, et al. Enhanced air pollution via aerosol-boundary layer feedback in China[J]. Scientific Reports, 2016,6:18998.
[18]
Zheng G J, Duan F K, Su H, et al. Exploring the severe winter haze in Beijing:The impact of synoptic weather, regional transport and heterogeneous reactions[J]. Atmospheric Chemistry and Physics, 2015, 15(6):2969-2983.
[19]
Tian M, Liu Y, Yang F, et al. Increasing importance of nitrate formation for heavy aerosol pollution in two megacities in Sichuan basin, southwest China[J]. Environmental Pollution, 2019,250:898-905.
[20]
Li W J, Sun J X, Xu L, et al. A conceptual framework for mixing structures in individual aerosol particles[J]. Journal of Geophysical Research:Atmospheres, 2016,121(22):13784-13798.
[21]
田鹏山,曹军骥,韩永明,等.关中地区冬季PM2.5中碳气溶胶的污染特征及来源解析[J]. 环境科学, 2016,37(2):427-434. Tian P S, Cao J J, Han Y M, et al. Pollution characteristics and source analysis of carbon aerosols in PM2.5 in winter in Guanzhong region[J]. Environmental Science, 2016,37(2):427-434.
[22]
Bi X H, Zhang G H, Li L, et al. Mixing state of biomass burning particles by single particle aerosol mass spectrometer in the urban area of PRD, China[J]. Atmospheric Environment, 2011,45(20):3447-3453.
[23]
温杰,史旭荣,田瑛泽,等.利用SPAMS研究天津市夏季环境空气中细颗粒物化学组成特征[J]. 环境科学, 2018,39(8):3492-3501. Wen J, Shi X R, Tian Y Z, et al. Study on chemical composition characteristics of fine particulate matter in ambient air of Tianjin city in summer using SPAMS[J]. Environmental Science, 2018,39(8):3492-3501.
[24]
Li L, Li M, Huang Z, et al. Ambient particle characterization by single particle aerosol mass spectrometry in an urban area of Beijing[J]. Atmospheric Environment, 2014,94:323-331.
[25]
Pratt K A, Murphy S M, Subramanian R, et al. Flight-based chemical characterization of biomass burning aerosols within two prescribed burn smoke plumes[J]. Atmospheric Chemistry and Physics, 2011, 11(24):12549-12565.
[26]
Li W, Shao L, Zhang D, et al. A review of single aerosol particle studies in the atmosphere of east Asia:Morphology, mixing state, source, and heterogeneous reactions[J]. Journal of Cleaner Production, 2016,112(2):1330-1349.
[27]
Zhang R, Wang G, Guo S, et al. Formation of urban fine particulate matter[J]. Chemical Reviews, 2015,115(10):3803-3855.
[28]
Guo S, Hu M, Zamora M L, et al. Elucidating severe urban haze formation in China[J]. Proceedings of the National Academy of Sciences of the United States of America, 2014,111(49):17373-17378.
[29]
Sitaras I E, Siskos P A. The role of primary and secondary air pollutants in atmospheric pollution:Athens urban area as a case study[J]. Environmental Chemistry Letters, 2008,6(2):59-69.
[30]
叶兴南,陈建民.大气二次细颗粒物形成机理的前沿研究[J]. 化学进展, 2009,21(Z1):288-296. Ye X N, Chen J M. Frontier research on formation mechanism of secondary fine particulate matter in atmosphere[J]. Progress in Chemistry, 2009,21(Z1):288-296.
[31]
Liu L, Wang Y L, Du S Y, et al. Characteristics of atmospheric single particles during haze periods in a typical urban area of Beijing:A case study in October, 2014[J]. Journal of Environmental Sciences, 2016, 40:145-153.
[32]
Taiwo A M, Harrison R M, Beddows D C S, et al. Source apportionment of single particles sampled at the industrially polluted town of port talbot, United Kingdom by ATOFMS[J]. Atmospheric Environment, 2014,97:155-165.
[33]
Zhang J K, Luo B, Zhang J Q, et al. Analysis of the characteristics of single atmospheric particles in Chengdu using single particle mass spectrometry[J]. Atmospheric Environment, 2017,157:91-100.
[34]
Li W J, Shao L Y. Observation of nitrate coatings on atmospheric mineral dust particles[J]. Atmospheric Chemistry and Physics, 2009, 9(6):1863-1871.
[35]
Li W J, Wang T, Zhou S, et al. Microscopic observation of metal-containing particles from Chinese continental outflow observed from a non-industrial site[J]. Environmental Science & Technology, 2013,47(16):9124-9131.
[36]
秦鑫,张泽锋,李艳伟,等.南京北郊春季含Pb气溶胶粒子来源分析[J]. 环境科学学报, 2015,35(3):641-646. Qin X, Zhang Z F, Li Y W, et al. Source analysis of Pb containing aerosol particles in northern suburbs of Nanjing in spring[J]. Journal of Environmental Science, 2015,35(3):641-646.
[37]
Wang S, He B, Yuan M, et al. Characterization of individual particles and meteorological conditions during the cold season in Zhengzhou using a single particle aerosol mass spectrometer[J]. Atmospheric Research, 2019,219:13-23.
[38]
陈多宏,李梅,黄渤,等.区域大气细粒子污染特征及快速来源解析[J]. 中国环境科学, 2016,36(3):651-659. Chen D H, Li M, Huang B, et al. Characteristics and rapid source analysis of regional atmospheric fine particle pollution[J]. China Environmental Science, 2016,36(3):651-659.
[39]
岳建华,陶俊,林泽健,等.成都春季生物质燃烧和沙尘期间气溶胶散射特征及其重建[J]. 环境科学, 2012,33(7):2151-2157. Yue J H, Tao J, Lin Z J, et al. Characteristics and reconstruction of aerosol scattering during biomass burning and sand dust in Chengdu in spring[J]. Environmental Science, 2012,33(7):2151-2157.
[40]
Huang X, Liu Z, Zhang J, et al. Seasonal variation and secondary formation of size-segregated aerosol water-soluble inorganic ions during pollution episodes in Beijing[J]. Atmospheric Research, 2016, 168:70-79.
[41]
Li W, Shao L. Transmission electron microscopy study of aerosol particles from the brown hazes in northern China[J]. Journal of Geophysical Research, 2009,114:148-227.
[42]
Pósfai M, Buseck P R. Nature and climate effects of individual tropospheric aerosol particles[J]. Annual Review of Earth and Planetary Sciences, 2010,38:17-43.
[43]
Moffet R C, Prather K A. In-situ measurements of the mixing state and optical properties of soot with implications for radiative forcing estimates[J]. Proceedings of the National Academy of Sciences of the United States of America, 2009,106(29):11872-11877.
[44]
Baltrusaitis J, Chen H, Rubasinghege G, et al. Heterogeneous atmospheric chemistry of lead oxide particles with nitrogen dioxide increases lead solubility:Environmental and health implications[J]. Environmental Science & Technology, 2012,46(23):12806-12813.
[45]
Moffet R C, Foy B D, Molina L T, et al. Measurement of ambient aerosols in northern Mexico city by single particle mass spectrometry[J]. Atmospheric Chemistry and Physics, 2008,8(16):4499-4516.
[46]
Li L, Tan Q, Zhang Y, et al. Characteristics and source apportionment of PM2.5 during persistent extreme haze events in Chengdu, southwest China[J]. Environment Pollution, 2017,230:718-729.
[47]
Huang X, Zhang J, Luo B, et al. Water-soluble ions in PM2.5 during spring haze and dust periods in Chengdu, China:Variations, nitrate formation and potential source areas[J]. Environment Pollution, 2018,243:1740-1749.
