Spatial distribution, contamination assessment and potential ecological risk of some trace metals in the surface sediments of the Gulf of Tunis, North Tunisia

Mna, Haïfa Ben; Helali, Mohamed Amine; Oueslati, Walid; Amri, Sirine; Aleya, Lotfi

doi:10.1016/j.marpolbul.2021.112608

Cited by 15 publications

(4 citation statements)

References 78 publications

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“…In our study, recorded TOC rates were slightly lower than those recorded by Bloundi et al (2008) (up to 7.59%), consistent with those published by Oujidi et al (2021) and higher than the results of Aknaf et al (2022). The high values of TOC are related to hydrodynamic regime, muddy fraction; which is mostly composed of fine clay minerals with a high ability to interact with organic matter, and the strong movement of terrigenous organic matter delivered toward the lagoon, as reported by Ben Mna et al (2021). Comparing our results with those obtained in other marine and lagoon ecosystems, the total organic carbon content of the surface sediments of Marchica lagoon was similar to, and in some cases higher than, some Mediterranean and lagoons ecosystems; in the Gulf of Tunis TOC values ranged from 0.14-12%, with lowest concentrations (0.14-2 mg/g) in the (Zaaboub et al 2014).…”

Section: Resultssupporting

confidence: 90%

“…Our results show that total phosphorus concentrations in sediments are higher than those reported by Oujidi et al (2021). Comparing our results with those obtained from other lagoons, TN contents in sediment of the Gulf of Tunis ranged from 0.170 to 1.46 mg/g, with an average of 0.66 mg/g, and TP con-tents ranged from 0.1 to 0.68 mg/g (Ben Mna et al 2021), and in the Bizert Lagoon, phosphorus ranges from 464-619 mg/g 15-20 mmol P/g in surface core sediment (Zaaboub et al 2014). In the Gulf of Gdansk total nitrogen, and organic phosphorus shows respectively concentrations of (0.1-14.3 mg/g DW) and (0.9-76.1 µg/g DW) (Łukawska-Matuszewska et al 2014).…”

Section: Resultssupporting

confidence: 58%

“…Coelho et al (2004) reported that phosphorus bound to Al, Ca, Fe, and Mn, the calcium bound P fraction increased with increasing marine influence, the organic P content decreased with depth, due to continuous mineralisation in the deeper sediment layers and vegetation. Furthermore, there is a strong positive correlation between TN and TP and TOC and Fine fractions in relation to their high proportions in organic form (Ben Mna et al 2021).…”

Section: Resultsmentioning

confidence: 95%

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Assessment of old eutrophication in the sediments of Marchica Lagoon (a post-restored lagoon, Mediterranean): The role of geochemistry and granulometry of the sediments

Rahhou,

Layachi,

Akodad

et al. 2023

Soil & Water Res.

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The aim of this study is to present the seasonal variation of organic matter (OM), total organic carbon (TOC), total nitrogen (TN), and total phosphorus (TP) in the bottom sediments of Marchica Lagoon, a post-restorated lagoon located in the Moroccan Mediterranean, and to estimate the potential role of the geochemistry and granulometry of bottom sediments in the retention of old eutrophication. The organic index of bottom sediment was found generally higher in old-eutrophic and enclosed areas. The surface sediments show variable levels of OM, TOC, TP, and TN; high in some cases (12.3%, 6.71%, 0.70%, and 0.30% respectively). These high levels were recorded in the central part of the lagoon and in areas subjected to high anthropogenic pressure, including wastewater discharges. Our results indicated that sediments are an excellent immobilizer of organic matter (C, N, and P), although, there was no correlation between sediment grain size and organic matter content. The absence of correlation might be explained by currentology and hydrodynamics, but also by the bathymetry of the lagoon. Therefore, sediments must be implicated in any lagoon restoration strategy and the site development plan.

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Section: Resultssupporting

confidence: 90%

Section: Resultssupporting

confidence: 58%

Section: Resultsmentioning

confidence: 95%

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Assessment of old eutrophication in the sediments of Marchica Lagoon (a post-restored lagoon, Mediterranean): The role of geochemistry and granulometry of the sediments

Rahhou,

Layachi,

Akodad

et al. 2023

Soil & Water Res.

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“…The PERI (Ke et al,2017;Ben Mna Haïfa et al,2021;Islam Md Saiful et al,2018;Shi et al,2016;Chai et al,2017)was used to assess the comprehensive potential ecological risk of heavy metals in sediment and was initially introduced by…”

Section: Risk Quotientmentioning

confidence: 99%

Distributions, Compositions, And Ecological Risk Assessment Of Typical Pollutants In Surface Sediment Of Xihe River, China

Sun

Yan

2022

Preprint

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Distributions and compositions of six phthalic acid esters (PAEs), eight phenol compounds and seven heavy metals in riverbed sediments of the Xihe River in Shenyang, China. The ecological risks of these typical pollutants were investigated and evaluated based on the risk quotient (RQ) and potential ecological risk index (PERI) methods. The concentrations of total ∑6PAEs, ∑8phenols and ∑7heavy metals in sediments varied from 92.83 to 293.66 μg/g dw, 8.87 to 83.73 μg/g dw and 0.46 to 419μg/g dw. The main pollutants in Xihe River sediments are DEHP, DIBP, phenol, P-methylphenol and Cd. More than half target PAEs and phenol compounds in sediment of the Xihe River exhibited medium or high ecological risk. Cd poses a very high ecological risk to the Xihe River Basin. It is imperative to take some effective measures to reduce the pollution of those contaminants.

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Mobility and risk assessment of heavy metals in benthic sediments using contamination factors, positive matrix factorisation (PMF) receptor model, and human health risk assessment

Goswami

Kalamdhad

2022

Environ Sci Pollut Res

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Spatial distribution, contamination assessment and potential ecological risk of some trace metals in the surface sediments of the Gulf of Tunis, North Tunisia

Cited by 15 publications

References 78 publications

Assessment of old eutrophication in the sediments of Marchica Lagoon (a post-restored lagoon, Mediterranean): The role of geochemistry and granulometry of the sediments

Assessment of old eutrophication in the sediments of Marchica Lagoon (a post-restored lagoon, Mediterranean): The role of geochemistry and granulometry of the sediments

Distributions, Compositions, And Ecological Risk Assessment Of Typical Pollutants In Surface Sediment Of Xihe River, China

Mobility and risk assessment of heavy metals in benthic sediments using contamination factors, positive matrix factorisation (PMF) receptor model, and human health risk assessment

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