Zhao Xia, Qiu Haoran, Zhao Yangli, Shen Jimin, Chen Zhonglin, Chen Jixiang
College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730050, China,
Environ Sci Pollut Res Int. 2015 May;22(9):6950-6. doi: 10.1007/s11356-014-3846-z. Epub 2014 Dec 6.
The concentrations of 16 polycyclic aromatic hydrocarbons (PAHs) in water, suspended particulate matters (SPMs), and sediments in the Lanzhou reach of the Yellow River were investigated in this study. The total PAH concentrations ranged from 548 to 2598 ng/L in water, 1502 to 11,562 ng/g in SPMs, and 181 to 1583 ng/g in sediments. The compositions of PAHs showed that 2- to 3-ring PAHs were abundant in water, 2- to 4-ring PAHs were predominant in SPMs, and 2- to 5-ring PAHs were abundant in sediments. The spatial distribution of PAHs was site-specific and PAHs varied at different sampling locations. The diagnostic ratio analysis indicated that the PAHs mainly had a pyrolytic source. The ecological risk assessment showed that the ecosystem risk of PAHs was low in the Lanzhou reach of the Yellow River.
本研究调查了黄河兰州段水体、悬浮颗粒物（SPM）和沉积物中16种多环芳烃（PAH）的浓度。水体中总PAH浓度范围为548至2598 ng/L，悬浮颗粒物中为1502至11562 ng/g，沉积物中为181至1583 ng/g。PAH的组成表明，水体中2至3环PAH含量丰富，悬浮颗粒物中2至4环PAH占主导，沉积物中2至5环PAH含量丰富。PAH的空间分布具有位点特异性，不同采样地点的PAH有所不同。诊断比值分析表明，PAH主要有热解来源。生态风险评估显示，黄河兰州段PAH的生态系统风险较低。
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