江苏省不同典型生态示范区土壤中多环芳烃污染调查

Investigation on PAHs Soil Pollution in Different Typical Ecological Demonstration Area of Jiangsu Province

对江苏省南京和苏州2个典型生态示范区土壤中多环芳烃污染现状进行了调查。结果表明,生态示范区土壤中多环芳烃污染程度随土地利用类型不同而污染程度有所不同,以工业用地为主的土壤中多环芳烃含量明显高于以农业用地为主的土壤,其总量呈现出由工业区用地到蔬菜瓜果用地逐渐降低的趋势。2个示范区4环及其以上PAH含量明显高于2环—3环PAH,主要为石化燃料高温燃烧造成;而以农业为主的蔬菜生产基地等,多环芳烃主要来源于石油类污染。

Investigation was performed on polycyclic aromatic hydrocarbons （PAHs） pollutions in the soils form two typical ecological demonstration areas of Nanjing and Suzhou in Jiangsu Province. The results indicated that the level of PAHs pollutions in the soils of ecological demonstration areas were different with the economic purpose in use. The content of PHAs in the soils of industrial land was evident higher than that of agricultural land, and the pollution trend was gradually decreased from industrial land to vegetable land. The contents of 2 cycles PAHs or 3 cycles PAHs were much more that of 4 cycles PAHs in two demonstration areas, which mostly caused by burning fossil fuel with high temperature. The PAHs mostly come from the petroleum pollution in the vegetable product base and the 2 cycles PAHs or 3 cycles PAHs pollution can not be neglected in Suzhou demonstration area.