Assessment of heavy metal contamination in surface sediments along the Mediterranean coast of Morocco

Environmental Monitoring and Assessment
Mohammed SaddikAbdelhadi Makan

Abstract

In this paper, heavy metal contamination in surface sediments along the Mediterranean coast of Morocco was investigated. Determining pollution degree as well as heavy metal origins were the main objectives of this investigation. For this reason, concentrations of nine heavy metals (Cd, Cu, Cr, Ni, Pb, Zn, Hg, Fe, and Mn) were analyzed at ten stations sampled during three different periods. The obtained concentrations showed significant variation between sampling periods, which was controlled by several environmental and chemical processes. According to contamination indices results using pollution load index (PLI), modified contamination degree (mCd), geoaccumulation index (Igeo), enrichment factor (EF), and potential ecological risk index (RI), sampling stations were classified between uncontaminated and strongly contaminated without detecting any intense heavy metal pollution in surface sediment. Likewise, the EF values were comprised between no enrichment and moderate to severe enrichment. According to sediment quality guidelines, the calculated M-ERM-Q indicated that heavy metal mixtures have between 9 and 49% probability for being toxic. This result revealed lowest to medium-low potential of adverse effects to biota popula...Continue Reading

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Citations

Dec 14, 2019·Environmental Science and Pollution Research International·Weijie LiZhongya Fan
Aug 30, 2020·Water Environment Research : a Research Publication of the Water Environment Federation·Kendrick Jaglal
Jul 23, 2020·Environmental Monitoring and Assessment·Sahar ElkaeeAnoushirvan Shirvany
Jun 28, 2021·Environmental Science and Pollution Research International·Rafet Çağrı ÖztürkErhan Mutlu

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