Tang Zhi, Liao Hai-Qing, Zhang Liang, Guo Jian-Yang, Wu Feng-Chang, Guo Fei, Zhou Bei-Hai
Department of Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China.
Huan Jing Ke Xue. 2011 Sep;32(9):2639-44.
The USEPA 16 priority pollutant dominated polycyclic aromatic hydrocarbons (PAHs) in the surface river sediments of Sichuan Province and Chongqing City in southwest China were determined using GC-MS. The result showed the content of PAHs in the sediment ranged from 48.2 ng/g to 723.1 ng/g, with an average value of 276.1 ng/g. Among which, the maximum content was found in Shimenzi of Yangtze River, the minimum content was found in Baiqing of Fujiang River. The content order of PAHs in the sediments followed Yangtze River (358.6 ng/g) > Minjiang River (322.2 ng/g) > Tuojiang River (292.7 ng/g) > Qujiang River (260.6 ng/g) > Jialing River (240.2 ng/g) > Fujiang River (82.4 ng/g). The vertical profiles of c(An)/c(An + Phe), c(FlA)/c(FlA + Pyr) and c(InP)/c (InP + BghiP) suggested the PAHs in this zone were mainly originated from pyrogenic source, the main sources of PAHs were petroleum combustion, biomass combustion, and coal burning. Risk assessment suggested that the PAHs in the sediment of this zone had no significantly biological impairment and low toxicological risk.
采用气相色谱 - 质谱联用仪（GC - MS）测定了中国西南部四川省和重庆市地表河流沉积物中美国环境保护局（USEPA）确定的16种优先污染物多环芳烃（PAHs）。结果表明，沉积物中PAHs含量范围为48.2 ng/g至723.1 ng/g，平均值为276.1 ng/g。其中，长江石门子含量最高，涪江白清含量最低。沉积物中PAHs含量顺序为长江（358.6 ng/g）＞岷江（322.2 ng/g）＞沱江（292.7 ng/g）＞渠江（260.6 ng/g）＞嘉陵江（240.2 ng/g）＞涪江（82.4 ng/g）。c(An)/c(An + Phe)、c(FlA)/c(FlA + Pyr)和c(InP)/c (InP + BghiP)的垂直分布表明，该区域PAHs主要来源于热解源，PAHs的主要来源是石油燃烧、生物质燃烧和煤炭燃烧。风险评估表明，该区域沉积物中的PAHs没有明显的生物损害，毒理学风险较低。
