Ecological risk assessment of heavy metals in sediments of Xiawan Port based on modified potential ecological risk index

作者：ZHU Hui na; YUAN Xing zhong; ZENG Guang ming; JIANG Min; LIANG Jie; ZHANG Chang; YIN Juan; HUANG Hua jun; LIU Zhi feng; JIANG Hong wei

来源：Transactions of Nonferrous Metals Society of China (English Edition), 2012, 22(6).

DOI：10.1016/S1003-6326(11)61343-5

• heavy metals
• chemical speciation
• modified potential ecological risk index
• sediments
• Xiawan Port

Modified potential ecological risk index (MRI) was proposed based on the potential ecological risk index (RI) and risk assessment code (RAC) by modifying an index.The modified index was relevant to the chemical speciation of heavy metals.Xiawan Port,a typical region contaminated by industrial production,was selected as a case study area.The total concentrations and chemical speciation of heavy metals in sediments of Xiawan Port were analyzed.The experimental data indicate that Xiawan Port is seriously polluted by heavy metals,especially by Cd.The risks of heavy metals are evaluated by RI,RAC and MRI,respectively.The resluts of MRI show that the risks of heavy metals are in the decreasing order of Cd＞Pb＞Cu＞Zn.Comparison of results by different methods reveals that MRIintegrates the characters of RI and RAC.MRI is recognized to be useful for risk managennt of heavy metals in sediments.

• 单位
  ppp; 湖南大学