摘要
通过对前山河(珠海段)及主要支流底泥中镉、汞、砷、铅、铬、铜、锌、镍等重金属含量进行分析,采用潜在生态危害指数法确定底泥重金属的潜在生态风险情况,提出底泥治理和利用的建议.评估结果表明,前山河(珠海段)及主要支流重金属污染物潜在生态风险等级均为低风险,采集分析的个别样品中,总镉、总汞的单一污染物潜在生态风险系数评估为中风险或较高风险,若进行清淤处置,河流底泥或淤土不适用于回填农用地.
Abstract
This paper analyzes the content of heavy metals,such as cadmium,mercury,arsenic,lead,chromium,copper,zinc,nickel,etc.in the sediment of Qianshan River(Zhuhai section)and its tributaries.The potential ecological hazard index method is used to determine the potential ecological risk of heavy metals in the sediment.This study proposes suggestions for sediment treatment and utilization.The evaluation results indicate that Qianshan River(Zhuhai section)and its main tributaries have a low potential ecological risks of heavy metal pollutants.In individual samples,the potential ecological risk coefficients of single pollutants,such as total cadmium and total mercury,are assessed as medium or high risk.If dredging is carried out,the river sediment is not suitable for backfilling agricultural land.
维普
万方数据