Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6358035 | Marine Pollution Bulletin | 2014 | 8 Pages |
Abstract
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 gâ1 (dry weight) (average: 550 ± 565 ng gâ1) and 54-5564 ng gâ1 (average: 517 ± 838 ng gâ1), 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.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Oceanography
Authors
Chuanliang Ma, Siyuan Ye, Tian Lin, Xigui Ding, Hongming Yuan, Zhigang Guo,