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Seasonal variation and source identification of water-soluble organic carbon in PM10 over Xi'an, China

  • Zongquan Huo
  • , Zhenxing Shen
  • , Jing Tian
  • , Junji Cao
  • , Kun Zhang
  • , Xin Wang
  • Xi'an Jiaotong University
  • CAS - Institute of Earth Environment

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

PM10 samples were collected in four seasons to investigate the seasonal variation of water-soluble organic carbon (WSOC) over Xi'an, China. The total organic carbon analyzer and the thermal optical carbon analyzer were used to detect the concentration of WSOC, organic carbon (OC), and element carbon (EC), respectively. The results show that the average concentration of WSOC was 17.2 μg/m3, 14.9 μg/m3, 28.3 μg/m3, and 32.5 μg/m3 from spring to winter. The percentage of WSOC in OC was highest in summer and lowest in winter. WSOC had a good correlation with OC (R=0.86) and had a poor relationship with EC (R=0.22). Moreover, the significant correlation was observed between WSOC and secondary organic carbon (SOC) (R=0.87), indicating that the WSOC in PM10 might be mainly caused by the photochemical reaction.

Original languageEnglish
Pages (from-to)128-132
Number of pages5
JournalHsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University
Volume44
Issue number9
StatePublished - Sep 2010

Keywords

  • PM
  • Seasonal variation
  • Water soluble organic carbon

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