Monte Carlo simulation on potential ecological risk evaluation of heavy metals in surface sediments from adjacent waters of Dushan Port,Jiaxing

doi:10.3969/j.issn.1001-909X.2016.02.009

Abstract

Abstract: The uncertainties and randomness are the most general issues existing in the risk assessment of heavy metals in sediments, the Monte Carlo technique was introduced for simulating the Hakanson potential ecological risk index, in order to make the risk assessment more scientific and rational. Potential ecological risk assessment modified with the Monte Carlo technique was used to analyze the ecological risk of heavy metals (Cu、Pb、Zn、Cr、Cd、Hg、As) in surface sediments from adjacent waters of Dushan Port. The results show that the pollution degrees of Cu, Pb and Zn are medium contaminated, while others belongs to slight contaminated. The results also illuminate that the probabilities for slight degree and medium degree pollution levels of C_d (the comprehensive pollution index) are 38.32% and 61.68% respectively.As for the ecological risk, all of 7 heavy metals and RI(the potential ecological risk index) are at a slight risk 1evel. The sensitive analyses indicate that Cu、Zn and Cr play leading roles in C_d and RI.

Key words: Dushan Port, surface sediment, heavy metal, potential ecological risk evaluation, Monte Carlo simulation

CLC Number:

CHEN De-hui, XU Heng-tao, QIAN Jian, ZHOU Qing-song, SONG Wei-hua. Monte Carlo simulation on potential ecological risk evaluation of heavy metals in surface sediments from adjacent waters of Dushan Port,Jiaxing[J]. Journal of Marine Sciences, 2016, 34(2): 65-74.

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