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| Distribution and Sources of Polycyclic Aromatic Hydrocarbons in Ice of Toudaoguai Section of the Yellow River |
| Received:May 14, 2014 |
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| KeyWord:Toudaoguai section;ice body;polycyclic aromatic hydrocarbon(PAH);distribution;source apportionment |
| Author Name | Affiliation | E-mail | | ZHANG Qi | College of Water Conservancy and Civil Engineering, Inner Mongolia Agriculture University, Hohhot 010018, China | | | PEI Guo-xia | College of Water Conservancy and Civil Engineering, Inner Mongolia Agriculture University, Hohhot 010018, China | peiguoxia@126.com | | LI Han-qing | College of Water Conservancy and Civil Engineering, Inner Mongolia Agriculture University, Hohhot 010018, China | | | LIU Geng-yun | College of Water Conservancy and Civil Engineering, Inner Mongolia Agriculture University, Hohhot 010018, China | |
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| Abstract: |
| Polycyclic aromatic hydrocarbons(PAHs) are ubiquitous and carcinogenic in nature. We collected ice samples from Toudaoguai section of the Yellow River and analyzed residual levels of 16 US EPA PAHs using GC-FID. The results showed that overall recoveries were ranged from 80.3%~106.1% with detection limits of 0.01~0.12 ng·L-1. The method approved to be fit for the determination of PAHs in ice samples. The concentrations of PAHs were in the ranges of 0.71~11.04 ng·L-1, with a mean concentration of 3.88 ng·L-1. The detection frequency for major pollutants Fluoranthene(Fla) and Pyrene(Pyr) was 72.70% and 86.40%, respectively. The concentrations of PAHs showed a decline as the thickness of ice increased, and were higher in the lower than in the upper part of ice body. Principal component analysis identified that three sources were the major contributor to PAHs. They were coal combustion(36.6%), traffic source(36.4%), and coking and wood combustion(7.5%). |
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