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Journal of Chemistry
Volume 2017, Article ID 4976574, 10 pages
Research Article

Sedimentary Record of Polycyclic Aromatic Hydrocarbons from the Shuanglong Catchment, Southwest China

1School of Geography Science, Nanjing Normal University, 1 Wenyuan Road, Qixia, Nanjing 210023, China
2Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, China
3Centre of Lake Engineering & Technology, State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China

Correspondence should be addressed to Yan-hua Wang; nc.ude.unjn@auhnaygnaw

Received 27 May 2017; Revised 18 September 2017; Accepted 9 October 2017; Published 13 November 2017

Academic Editor: Andrea Gambaro

Copyright © 2017 Yu-ping Liu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Polycyclic aromatic hydrocarbons (PAHs) in the dated sediments from the Shuanglong catchment in the southwest of China were measured to characterize source inputs. The PAHs concentrations in the priority controlling list of US EPA (∑PAHs) ranged within 102.47~563.24 ng g−1, with an average value of 207.18 ng g−1. The 2-3 rings PAHs were predominant, accounting for 73.77% of ∑PAH. According to the classification of pollution levels, ∑PAHs concentrations in the sediments are within the range of moderate pollution level. Both the total and individual PAH concentrations changed with the depth. The profile distribution of PAHs concentration in the sediments suggested that PAHs acted as an effective way to reconstruct the historical trends of socioeconomic changes in the study areas. Results of Ant/(Ant + Phe), Fla/(Fla + Pyr), and BaA/(BaA + Chry) show that petroleum and petrogenic matter are attributed to the potential pollution source in the Shuanglong catchment. The coal combustion and incomplete combustion of gasoline and fossil fuel are dominant. TOC contents had positive correlation with ∑PAHs (, ), 2-3 rings (, ), 4-ring (, ), and 5-6 rings (, ).