Seasonal Characterization and Source Apportionment of VOCs in Suzhou's Qingjian Lake Area
LIU Jinrong
ZHANG Ninghong
TANG Lili
YAO Shenliang
WANG Zhuang
ZHANG Ru
YANG Xiaoxiao
HUA Yan
ZHOU Hongcang
Abstract：Volatile organic compounds (VOCs) are key precursors of atmospheric photochemical pollution, so it is of significance to investigate their characteristics and sources for the purpose of efficient VOCs emission control. In this paper, atmospheric VOCs were observed by use of TH-300 on-line monitor system in Qingjian Lake area in Suzhou City. The investigation involved integrated analysis of VOCs concentration levels and the characteristics in spring and summer, respectively;source apportionment of VOCs was performed using a receptor model of positive matrix factorization (PMF) . Results of the investigation showed that the average volume fraction of total VOCs in spring and summer was 28.67×10-9 and 31.26×10-9, respectively; and the diurnal variations of the total VOCs presented two evident peaks which appeared in the morning and evening rush hours. Furthermore, a major VOCs source of the industrial park surrounding Qingjian Lake was identified according to the analysis by a species-ratio method; and the PMF analysis suggested that vehicle exhaust, industrial emissions and extensive use of solvent/coating were the major sources for the ambient VOCs in this area, especially during the severe ozone pollution period, VOCs mainly came from solvent/coating and industrial emissions.
Keywords：Qingjian Lake in SuzhouVOCspollution characteristicssource apportionment
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：9( 126-134 )