武汉市长江北岸耕地中多环芳烃垂向与纵向分布特征

Vertical and Longitudinal Distribution of Polycyclic Aromatic Hydrocarbons of Agricultural Soil in the Northern Shore of Yangtze River in Wuhan City

文章对武汉市长江北岸农用耕地中多环芳烃的含量进行了调查。结果表明除紧靠马路边一个点位的荧蒽浓度高于荷兰制定的土壤修复标准之外,其余各点各类多环芳烃均在此标准值之内;随着点位距污染源越远多环芳烃的含量越来越低;并且多环芳烃在垂直方向上的迁移存在色谱效应。通过分析不同采样点土壤中的多环芳烃含量,分析得出结论汽车尾气所排放的多环芳烃要高于居民日常生活的排放量;土壤中不同环数多环芳烃所占的比例可指示其有不同的来源。

Distribution of polycyclic aromatic hydrocarbons（PAHs）of agricultural soil in the northern shore of Yangtze River in Wuhan City was investigated.Results indicated that the concentration of PAHs in the soil was less than that of the Holland standards for PAHs except fluoranthene in one point.With the points farther away from the pollution,the level of PAHs getting lower and lower,and PAHs concentration in the vertical direction abiding by the chromatographic effect.By analyzing the PAHs concentration from different sampling points,it was concluded that the PAHs emitted by vehicle exhaust was higher than the emissions of the daily life of residents,and the proportion of different PAHs can indicate different contamination sources.