Jiao Wen-Tao, Lü Yong-Long, Wang Tie-Yu, Li Jing, Luo Wei, Shi Ya-Juan
State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
Huan Jing Ke Xue. 2009 Apr 15;30(4):1166-72.
Concentrations and composition of 16 polycyclic aromatic hydrocarbons (PAHs) listed for prior control by US EPA were detected by analyzing 28 surface soil samples from the chemical industrial areas of Tianjin Binhai New Area with a gas chromatography equipped with mass spectrometry (GC/MS). Relative concentrations of PAH compounds with different benzene rings and principal component analysis were used to identify the possible sources of soil PAHs. The maximum PAH concentration in all the samples was 5,991.7 ng x g(-1), with a mean values of 1,185.0 ng x g(-1). The concentrations of four and five rings PAH components were higher than that of the other PAH components in Tanggu and Hangu chemical industrial areas, and three rings PAH components were major PAHs in Dagang petroleum industrial area. There is significant positive correlation (n = 28, R2 = 0.847, p < 0.01) between PAH concentrations and total organic carbon (TOC) contents in the soil samples. Coal combustion was the dominant source of PAHs in chemical industrial areas, while petroleum volatilization and leakage were main contributors of PAHs in Dagang petroleum industrial area.
通过使用配备质谱仪的气相色谱仪（GC/MS）分析天津滨海新区化工工业区的28个表层土壤样品，检测了美国环境保护局（US EPA）先前规定需控制的16种多环芳烃（PAHs）的浓度和组成。利用不同苯环的PAH化合物的相对浓度和主成分分析来确定土壤PAHs的可能来源。所有样品中PAH的最大浓度为5991.7 ng x g(-1)，平均值为1185.0 ng x g(-1)。在塘沽和汉沽化工区，四环和五环PAH组分的浓度高于其他PAH组分，而在大港石油工业区，三环PAH组分是主要的PAHs。土壤样品中PAH浓度与总有机碳（TOC）含量之间存在显著正相关（n = 28，R2 = 0.847，p < 0.01）。煤炭燃烧是化工区PAHs的主要来源，而石油挥发和泄漏是大港石油工业区PAHs的主要贡献因素。
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