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Characterization of Particulate-Phase High Molecular Weight Mono-Carbonyls (C# > 5) and Dicarbonyls in Urban Atmosphere of Xi'an, China
Dai, WT (Dai, Wen-Ting)[1]; Ho, SSH (Ho, Steven Sai Hang)[1,2]; Ho, KF (Ho, Kin-Fai)[1,3]; Cao, JJ (Cao, Jun-Ji)[1,4]
2012-10-31
Source PublicationAEROSOL AND AIR QUALITY RESEARCH
Volume12Issue:5Pages:892-901
Subtype期刊论文
Abstract

An analytical method to quantify particulate-phase high molecular weight mono-carbonyls (C# > 5) and di-carbonyls has been developed by adopting 2,4-dinitrophenylhydrazine (DNPH) derivatization followed by high performance liquid chromatography/ultra-violet (HPLC/UV) detection. Satisfactory reproducibility and precision of the measurements were achieved. This method was applied to measure the carbonyls in PM2.5 collected on quartz-fiber filters, sampled in Xi'an, China, from 2008 to 2009. Nonanaldehyde was the most abundant compound, followed by octanaldehyde, hexanaldehyde and heptaldehyde, accounting for 40%, 20%, 12% and 11% in the total quantified carbonyls. For dicarbonyls, the concentration of methylglyoxal was much higher than that of glyoxal. The seasonal variations of the particulate-phase mono-carbonyls and dicarbonyls were similar to those in the gas-phase, namely winter > autumn > spring > summer (except octanaldehyde). A strong correlation among those carbonyls was observed in winter, resulting from low temperature partitioning, weaker photochemical reaction, and more primary emission sources. In contrast, in summer, vehicle emissions, cooking emissions and photochemical reactions are the major pollution source in Xi'an.

KeywordHigh Molecular Mono-carbonyls Glyoxal Methylglyoxal Pm2.5 Xi’an
DOI10.4209/aaqr.2011.12.0228
Indexed BySCIE ; EI
Language英语
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/10089
Collection粉尘与环境研究室
Corresponding AuthorHo, KF (Ho, Kin-Fai)[1,3]
Affiliation1.Key Laboratory of Aerosol, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, 710075, China;
2.Division of Atmospheric Sciences, Desert Research Institute, Reno, NV 89512, USA;
3.School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong, China;
4.Institute of Global Environmental Change, Xi’an Jiaotong University, Xi'an, China
Recommended Citation
GB/T 7714
Dai, WT ,Ho, SSH ,Ho, KF ,et al. Characterization of Particulate-Phase High Molecular Weight Mono-Carbonyls (C# > 5) and Dicarbonyls in Urban Atmosphere of Xi'an, China[J]. AEROSOL AND AIR QUALITY RESEARCH,2012,12(5):892-901.
APA Dai, WT ,Ho, SSH ,Ho, KF ,&Cao, JJ .(2012).Characterization of Particulate-Phase High Molecular Weight Mono-Carbonyls (C# > 5) and Dicarbonyls in Urban Atmosphere of Xi'an, China.AEROSOL AND AIR QUALITY RESEARCH,12(5),892-901.
MLA Dai, WT ,et al."Characterization of Particulate-Phase High Molecular Weight Mono-Carbonyls (C# > 5) and Dicarbonyls in Urban Atmosphere of Xi'an, China".AEROSOL AND AIR QUALITY RESEARCH 12.5(2012):892-901.
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