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Sediment Records and Source Analysis of PolycyclicAromatic Hydrocarbons in Jurong Catchment(PDF)

南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2020年01期
Page:
66-75
Research Field:
环境科学与工程
Publishing date:

Info

Title:
Sediment Records and Source Analysis of PolycyclicAromatic Hydrocarbons in Jurong Catchment
Author(s):
Qiu Yu1; Wang Yanhua1; 2; 3; Chen Xi1; Sun Tian1; Wang Fangfang1; Zhang Maoheng1; 3; Li Chunhua4
(1.School of Geography,Nanjing Normal University,Nanjing 210023,China)(2.Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application,Nanjing 210023,China)(3.Key Laboratory of Virtual Geographic Environmen
Keywords:
Jurong; small catchment; polycyclic aromatic hydrocarbons; vertical distribution; source identification
PACS:
X824
DOI:
10.3969/j.issn.1672-1292.2020.01.010
Abstract:
In this study,Jurong small catchment,located in the Qinhuai River basin with rapid economic development,is taken as the research target area. Statistical analysis and the PMF model are used to analyze the sources of polycyclic aromatic hydrocarbons(PAHs)in Jurong catchment and a preliminary assessment of their risks is studied. The results of principal component analysis and PMF model analysis are consistent with the molecular ratio method,indicating that the PAHs in the catchment are mainly derived from high-temperature combustion of fossil fuels. The first input source is deduced to be the exhaust gas emission,and the second one is the coal combustion. The result of the PMF model shows that the dominant sources are tail gas(diesel and gasoline combustion)(28.31%),followed by coal combustion(25.02%)and mixed sources(14.83%). Coke combustion source(14.60%),petroleum combustion source(12.07%)and biomass combustion source(5.17%)are also the contributors to the sedimentary PAHs. The result of ERL/ERM shows that the average concentration of three PAHs of Ace,Ant and Flua exceed the low value of ecological effect interval by 4.76,5.06 and 8.37 times. In addition,the mean values of BaP and IcdP are higher,and there is an ecological risk. The result of TEF shows that the toxic equivalent concentration of ∑PAHs in the catchment ranges from 3.29 to 757.77 ng/g,and the overall pollution level is higher. The toxic equivalent concentration of BaP and IcdP exceeds 100 ng/g,which is the main toxic equivalent of Jurong small catchment.

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Last Update: 2020-03-15