ZHANG Yan-lin1,2 , HU Jian1 , LIU Bao-jian1,2,3 , LI Si-liang1, GUAN Jin1

（1.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China;
2.Graduate University of Chinese Academy of Sciences, Beijing 100049, China;
3. State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China)

Abstract: Sixteen polycyclic aromatic hydrocarbons (PAHs) in surface water and suspended particulate matter (SPM) in the major rivers of the Liaohe River drainage basin were determined by GC/MS. The concentrations and distribution characteristics, pollution levels, and sources of PAHs were discussed. The total PAHs concentrations range from 0.41 to 76.45μg·g-1 (dry weight) in SPM, and 32.57 to 108.47ng·L-1 in surface water, respectively. The PAHs concentrations in western Liaohe River are higher than those in eastern Liaohe River and its main streams. The compositions of PAHs are predominant by low-ring PAHs (including two- and three-ring PAHs), while thepercentage of low-ring PAHs in dissolved form is higher than that in SPM. Thetwo-ring PAHs percentage is highest with an average of 68.19 % in dissolved PAHs, while the three-ring PAHs percentage is highest with an average of 66.28％in SPM, respectively. Compared with other rivers both at home and abroad, the PAHs concentrations in the Liaohe River drainage basin are at a lower level, and some rivers have suffered PAHs contamination to a certain extent. The main sources of PAHs are petroleum and fossil fuel combustion-based mixture, which are related to the complex energy structure of Liaoning Province.

Key words: LiaoHe River; PAHs; source apportionment

EARTH AND ENVIRONMENT Vol. 40, No.2, Tot No.288, 2012, Page 188-194