搬迁化工厂区土壤中多环芳烃污染及来源分析

分析南通某搬迁化工厂区土壤中16种优控多环芳烃（PAHs）污染物的含量特征及污染水平。结果表明，车间和仓库土壤中多环芳烃总量为200—300ng／g，在南通市耕地土壤污染水平范围内。停车场土壤中PAHs含量为3435ng／g，污染水平高于普通耕地，与交通干线两侧土壤相当，土壤中PAHs以4环及4环以上PAHs为主，为汽车尾气污染，若继续用于道路或停车场等功能无需进行PAHs修复。

Analysis of the Sources of Polycyclic Aromatic Hydrocarbons in Surface Soil of a relocated Chemical Industrial

The concentrations andpollution levels of 16 polycyclic aromatic hydrocarbons （PAHs） in the soil of a relocated chemical industry of Nantong were studied. The results showed that the PAHs concentrations of workshop and warehouse soils are in the range of 200 - 300 ng/g, within the PAHs pollution level of farmland soil of Nantong City. PAHs concentration of the parking lot soil is 3 435 ng/g. The pollution level is higher than the normal farmland, and comparable to the PAHs level of the soil of transpor- tation routes. The PAHs pollution is mainly come from automotive exhaust pollution and the main pollutants are PAHs with 4 or more than 4 rings. If the parking lot zone continues to be used for roads or parking lot, PAHs remediation is not needed.