CIESC Journal

• 能源和环境工程 • 上一篇    下一篇

焦化厂土壤中的累积、垂向分布特征及来源分析

贾晓洋,姜林,夏天翔,姚珏君,梁竞,樊艳玲,钟茂生   

  1. 北京市环境保护科学研究院,北京 100037
  • 出版日期:2011-12-05 发布日期:2011-12-05

Analysis on accumulation, distribution and origin of polycyclic aromatic hydrocarbons in soils under a coking plant

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  • Online:2011-12-05 Published:2011-12-05

Abstract:

Anthropogenic polycyclic aromatic hydrocarbons (PAHsare one of the most major pollutants in soil under coking plants.In order to understand the characteristics of accumulation and vertical distribution of 16 USEPA priority PAHs in soil, GC/MS was used to analyze 16 PAHs in 587 soil samples taken from different depths of 018 m under coking plant.The results showed that, the highest and average concentration of total PAHs were 14363.7 mg·kg-1 and 190.4 mg·kg-1 respectively, indicating that the soil under coking plant had been polluted.The dominant components were low molecular weight PAHs, accounting for about 85%.The concentrations of PAHs had obvious fluctuation at various layers, and their concentration change was parallel.There was an obvious cumulative effect in 56 m soil layer, which might be due to different filtration capability of soil in different layers and PAHs leaching ability.Based on the principal component and Q-clustering analysis, the entire soil profile could be classified into 5 different layers01 m, 13 m, 35 m, 5

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