对上海市区延安高架道路两旁绿地土壤和沿线灰尘中铅的含量调查发现,延安高架道路沿线绿地土壤中全铅平均质量浓度为93.61mg/kg,是上海市土壤背景值的3.7倍,沿线灰尘全铅平均质量浓度为324.62mg/kg,远远超过了绿地土壤中铅的含量。研究区域土壤和灰尘中铅的空间分布差异较大,部分地区出现严重积累。土壤和灰尘中铅的分布规律趋于一致,均表现为延安东路最高,其次是延安中路,延安西路最低。所选区域随着垂直道路水平距离的增加,土壤中铅含量的分布呈现一定的规律性,却易受人为影响而变得复杂多样。
Characterization and distribution of lead in soil and dust along Yanan Overhead Road in Shanghai City were studied. The total lead content in soil was 93.61 mg/kg in average, 3.7 times of the background value in Shanghai, and the total lead content in dust was 324.62 mg/kg. Lead content in Yanan East Road was the highest; and the Yanan Middle Road the lowest.