广州入海河口沉积物重金属污染及潜在生态风险初步评价

The Heavy Metal Pollution of Coastal Sediment in Guangzhou and its Potential Ecological Risk

采用单因子指数法和Hakanson潜在生态危害指数法对广州入海河口沉积物中重金属进行评价。结果表明:广州入海河口的综合污染程度由重到轻的排列顺序为黄埔港>莲花山>小虎>蕉门>洪奇沥;潜在生态风险由高到低的排列顺序和污染程度顺序一致,黄埔港具有较高潜在生态风险。

Based on the concentration data of heavy metals in the coastal sediment from Guangzhou, the pollution of heavy metals and its potential ecological risk were analyzed and assessed by using the index number techniques of single factor and Hakanson ecological risk. The results show that the order of pollution was Huangpugang 〉 Lianhuashan 〉 Xiaohu 〉 Jiaomen 〉 Hongqili ,and that the order of potential ecological risk was the same as the order of pollution, while the potential ecological risk of Huangpugang sediment was rather high.