IEECAS OpenIR  > 粉尘与环境研究室
Variations of Particle Size Distribution, Black Carbon, and Brown Carbon duringa Severe Winter Pollution Event over Xi’an, China
Zhang,Q(Zhang,Qian)1,2; Shen,ZX(Shen,Zhenxing)1,2; Lei,YL(Lei,Yali)1; Wang,YS(Wang,Yueshe)4; Zeng,YL(Zeng,Yaling)1; Wang, QY(Wang,Qiyuan)2; Ning,Z(Ning,Zhi)3; Cao,JJ(Cao,Junji)1; Wang,LQ(Wang,Linqing)1; Xu,HM(Xu,Hongmei)1; Shen,Zhenxing
2018-09-28
Source PublicationAerosol and Air Quality Research
Volume18Issue:6Pages:1419-1430
Subtype期刊论文
Other AbstractReal-time particulate matter (PM) size distributions, 4-hour time resolution, PM2.5, carbonaceous materials, and their optical properties were measured during a severe pollution event in Xi’an, China. High PM2.5/PM10 ratios were observed on both pollution (0.83) and non-pollution (0.73) days, emphasizing the abundance of fine particles during sampling days. The particle number (PN) first peaked with a wide size range (30–100 nm) before morning rush hours (approximately 01:00–05:00) on pollution and non-pollution days, demonstrating that PN was governed by the accumulation of freshly emitted diesel particles and characterized by distinct aerosol condensation growth. By contrast, the second peak time and size range differed between pollution and non-pollution days because of different formation mechanisms. The light-absorbing coefficients of both black carbon (BC, babs-880nm, BC) and brown carbon (BrC, babs-370nm, BrC) were high on pollution days and decreased to approximately half of those values on non-pollution days, indicating that the degree of light absorption is reduced by rain. The diurnal variation in babs-880nm, BC pollution peaked with traffic on January 1 and 2. By contrast, it remained in relatively stable and high ranges (120–160 Mm–1) in the second period (January 3–5) without traffic peaks, illustrating that the dominant sources changed even during the same pollution period. High values of both babs-370nm, BrC and babs-880nm, BC coincided in the afternoon and evening due to emissions from primary sources, and abundant aqueous secondary organic carbon, respectively. A highly variable mass absorption coefficient of BrC also indicated the variety of fuel combustion sources of primary BrC in Xi’an.
KeywordSevere Pollution Periods Particle Size Distribution Black Carbon Brown Carbon
DOI10.4209/aaqr.2018.01.0007
Indexed BySCI
Project Number41573101 ; 2017YFC0212205 ; SKLLQG1616 ; xkjc2015002
Language英语
Funding OrganizationNational NaturalScience Foundation of China ; National NaturalScience Foundation of China ; NationalKey Research and Development Plan of China ; NationalKey Research and Development Plan of China ; a grant from the SKLLQG at theChinese Academy of Sciences ; a grant from the SKLLQG at theChinese Academy of Sciences ; Fundamental Research Funding for Central Universities inChina ; Fundamental Research Funding for Central Universities inChina
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Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5370
Collection粉尘与环境研究室
Corresponding AuthorShen,Zhenxing
Affiliation1.Department of Environmental Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China
2.Key Lab of Aerosol Chemistry & Physics, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an710061, China
3.School of Energy and Environment, City University of Hong Kong, Hong Kong, China
4.State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Recommended Citation
GB/T 7714
Zhang,Q(Zhang,Qian),Shen,ZX(Shen,Zhenxing),Lei,YL(Lei,Yali),等. Variations of Particle Size Distribution, Black Carbon, and Brown Carbon duringa Severe Winter Pollution Event over Xi’an, China[J]. Aerosol and Air Quality Research,2018,18(6):1419-1430.
APA Zhang,Q.,Shen,ZX.,Lei,YL.,Wang,YS.,Zeng,YL.,...&Shen,Zhenxing.(2018).Variations of Particle Size Distribution, Black Carbon, and Brown Carbon duringa Severe Winter Pollution Event over Xi’an, China.Aerosol and Air Quality Research,18(6),1419-1430.
MLA Zhang,Q,et al."Variations of Particle Size Distribution, Black Carbon, and Brown Carbon duringa Severe Winter Pollution Event over Xi’an, China".Aerosol and Air Quality Research 18.6(2018):1419-1430.
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