Source apportionment of polycyclic aromatic hydrocarbons in soils of wetlands in the Liao River Delta, Northeast China.
The polycyclic aromatic hydrocarbons (PAHs) of 55 surface soil samples from the wetlands in the Liao River Delta, Northeast China were measured in order to apportion their sources. The total concentrations of 16 US EPA priority PAHs and alkyl-PAHs in this region ranged 106-3148 ng g⁻¹ (dry weight) (average: 550 ± 565 ng g⁻¹) and 54-5564 ng g⁻¹ (average: 517 ± 838 ng g⁻¹), respectively. Based on the positive matrix factorization analysis of alkylated and parent PAHs, six sources of PAHs were identified including petroleum (23%), biomass burning (23%), air-soil exchange (18%), coal combustion (17%), traffic emission (14%) and biogenic origin (6%). The positive correlation between low molecular weight (LMW) PAHs and TOC contents could demonstrate a potential positive influence of TOC on the accumulations of LMW PAHs in soils by the air-soil exchange. The petrogenic PAHs may pose a limited harmful effect on aquatic organisms although they were abundant in the area.
Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China. Electronic address: 12110740014@fudan.edu.cn.
Chuanliang
C
Ma
Key Laboratory of Coastal Wetland Biogeosciences, China Geologic Survey, Qingdao Institute of Marine Geology, Qingdao 266071, China. Electronic address: ye_siyuan@sina.com.
Siyuan
S
Ye
State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China. Electronic address: lintian@vip.gyig.ac.cn.
Tian
T
Lin
Key Laboratory of Coastal Wetland Biogeosciences, China Geologic Survey, Qingdao Institute of Marine Geology, Qingdao 266071, China. Electronic address: xiguiding@126.com.
Xigui
X
Ding
Key Laboratory of Coastal Wetland Biogeosciences, China Geologic Survey, Qingdao Institute of Marine Geology, Qingdao 266071, China. Electronic address: Hongming.yuan@163.com.
Hongming
H
Yuan
Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China. Electronic address: guozgg@fudan.edu.cn.
Zhigang
Z
Guo
D002681:China; D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000737:chemistry; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D045483:Rivers / Q000737:chemistry; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*; D053833:Wetlands
D011084:Polycyclic Aromatic Hydrocarbons; D012987:Soil; D012989:Soil Pollutants; D014874:Water Pollutants, Chemical
PAHs; PMF; Risk assessment; Soils; Source apportionment; Wetlands in the Liao River Delta in China