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Day-night differences and seasonal variations of chemical species in PM10 over Xi'an, northwest China
Shen, ZX (Shen, Zhenxing)[ 2,1 ]; Cao, JJ (Cao, Junji)[ 2 ]; Zhang, LM (Zhang, Leiming)[ 3 ]; Liu, L (Liu, Li)[ 1 ]; Zhang, Q (Zhang, Qian)[ 1 ]; Li, JJ (Li, Jianjun)[ 2 ]; Han, YM (Han, Yuemei)[ 1 ]; Zhu, CS (Zhu, Chongshu)[ 2 ]; Zhao, ZZ (Zhao, Zhuzi)[ 2 ]; Liu, SX (Liu, Suixin)[ 2 ]
2014-03-15
Source PublicationENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume21Issue:5Pages:3697-3705
Subtype期刊论文
Abstract

To investigate day-night differences and seasonal variations of PM10 and its chemical composition in an urban environment in Xi'an, northwest China, day- and nighttime PM10 mass and its chemical components including water-soluble ions (Na+, NH4 (+), K+, Mg2+, Ca2+, F-, Cl-, NO3 (-), and SO4 (2-)), organic carbon (OC), elemental carbon, and water-soluble organic carbon (WSOC) were measured on selected representative days from 20 December 2006 to 12 November 2007. Annual mean PM10 concentration in this city was five times of the China Ambient Air Quality Standard for annual average (70 mu g m(-3)). Carbonaceous fractions and water-soluble ions accounted for nearly one third and 12.4 %, respectively, of the annual mean PM10 mass. No dramatic day-night differences were found in the loadings of PM10 or its chemical components. Spring samples were highlighted by abundance of Ca2+, while the secondary aerosol species (SO4 (2-), NO3 (-), and NH4 (+)) and OC dominated in summer, autumn, and winter samples. Relatively low NO3 (-)/SO4 (2-) ratio suggested that stationary source emissions were more important than vehicle emissions in the source areas in this city. Strong relationships between WSOC and biomass markers (water-soluble K+, OC1, and OP) were observed in winter and autumn, indicating that WSOC was derived mainly from biomass burning in these seasons. This was also supported by analysis results on the biomass burning events. In contrast, poor correlations between WSOC and biomass markers were demonstrated in summer and spring, implying that WSOC was mainly formed as secondary organic carbon through photochemical activities.

KeywordPm10 Water-soluble Ions Wsoc Biomassburning Dust Storms
DOI10.1007/s11356-013-2352-z
Indexed BySCI ; EI
Language英语
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Cited Times:22[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/9777
Collection粉尘与环境研究室
Corresponding AuthorShen, ZX (Shen, Zhenxing)[ 2,1 ]
Affiliation1.Department of Environmental Science and Engineering, Xi’anJiaotong University, Xi’an 710049, China;
2.Key Laboratory of Aerosol, SKLLQG, Institute of EarthEnvironment, Chinese Academy of Sciences, Xi’an 710075, China;
3.Air Quality Research Division, Science and Technology Branch,Environment Canada, Toronto, Canada
Recommended Citation
GB/T 7714
Shen, ZX ,Cao, JJ ,Zhang, LM ,et al. Day-night differences and seasonal variations of chemical species in PM10 over Xi'an, northwest China[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2014,21(5):3697-3705.
APA Shen, ZX .,Cao, JJ .,Zhang, LM .,Liu, L .,Zhang, Q .,...&Liu, SX .(2014).Day-night differences and seasonal variations of chemical species in PM10 over Xi'an, northwest China.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,21(5),3697-3705.
MLA Shen, ZX ,et al."Day-night differences and seasonal variations of chemical species in PM10 over Xi'an, northwest China".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 21.5(2014):3697-3705.
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