广州城市地表堆积物的Pb污染

Pb Pollution of Urban Surface Sediment of Guangzhou

以地表堆积物中的Pb作为重点研究对象,在广州市分3个功能区进行地表堆积物样品的采集。从生物可利用度、对比度、浓度富集率、环境浓度界限等方面对堆积物中Pb的总体污染程度进行评估,并定量分析了不同粒径级部分对堆积物总体污染的贡献程度。研究结论可以为广州城市非点源的防治与管理提供理论依据。

Pb in the urban surface sediment was taken as a key object in this study.The surface sediments in three functional areas in Guangzhou were collected.The total contaminant level of Pb in the sediment was assessed from different aspects,such as bioavailability,contrast,concentration enrichment ratio and environmental concentration guidelines.And individual fractions' pollution contribution to total sediment was analyzed quantificationally.The achievements be taken as theory bases for controlling and managing nonpoint source pollution of Guangzhou.