Assessment of organic and metallic contamination in the surface sediment of Monastir Bay (Eastern Tunisia): Spatial distribution, potential sources, and ecological risk assessment

Damak, Mohamed; Fourati, Rania; Ellech, Boubaker; Kallel, Monem

doi:10.1016/j.marpolbul.2019.110500

Cited by 26 publications

(12 citation statements)

References 32 publications

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“…The concentrations of heavy metal are positively correlated to OM, i.e., sediment with relatively high OM tends to be more polluted by heavy metals. It was previously suggested that OM in sediment can adsorb heavy metals from the environment [52]. The grain size distribution of sediment is also an important factor that affects the enrichment of heavy metals [53].…”

Section: Effects Of Environmental Variables On the Heavy Metalsmentioning

confidence: 99%

Risk assessment of heavy metals in the surface sediment at the drinking water source of the Xiangjiang River in South China

et al. 2020

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Background: The Xiangjiang River is an important drinking water resource for the Hunan Province of China. It is crucial to ascertain the pollution status, influencing factors, ecological risks, and possible sources of heavy metals in the sediments of the Xiangjiang River. Sediment is both a source and a sink of heavy metals in aquatic ecosystems. In this study, surface sediment was collected from the Zhuzhou Reach of the Xiangjiang River and eight heavy metals were investigated. Results:In all sediment samples, all eight heavy metals were detected and their average concentration fell in the order of Zn > Pb > As > Cu > Cr > Ni > Cd > Co. Assessment shows extremely serious Cd pollution and a very high potential ecological risk from Cd. According to correlation analysis and principal component analysis (PCA), As, Cu, Ni, Pb, and Zn originate from industrial wastewater and mineral smelting activities, whereas Co, Cr, and Ni come from natural sources. Redundancy analysis (RDA) reveals that the organic matter content and the particle size of the sediment have a certain influence on the enrichment of heavy metals. Conclusion:Among all eight examined heavy metals in the surveyed area, the content of Zn, Pb, and As is the highest, and that of Cd and Co is the lowest. Despite a low level of absolute content, the Cd in sediment already renders a high ecological risk and thus calls for urgent attention. Anthropogenic activities are the main source of heavy metals in the sediment. The distribution of heavy metals may also be influenced by sediment properties. The results provide guidance for controlling heavy metal pollution and protecting drinking water sources in the Xiangjiang River.

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Section: Effects Of Environmental Variables On the Heavy Metalsmentioning

confidence: 99%

Risk assessment of heavy metals in the surface sediment at the drinking water source of the Xiangjiang River in South China

et al. 2020

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“…High organic matter content in KS might also be explained by the aquaculture farming activity available in the area. A recent study in Monastir Bay, Tunisia indicates the high levels of sediment organic matter are due to excretions of fish and faecal materials from fish farming activity [67].…”

Section: Discussionmentioning

confidence: 99%

Bulk Chemical and Optical Spectroscopy Characterisations of Dissolved Organic Matter Extracted from the Tropical Coastal Sediment

Dzulkafli

Mahdzir

Hara

2021

JMSE

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The study of organic matter characterisation in coastal sediment is useful for understanding how dissolved organic matter (DOM) reactivity influences the fate of pollutants in the aquatic environment. However, there is little information available on the structural properties of DOM in coastal sediment. Chemical analysis, UV-Visible (UV-Vis) absorbance, fluorescence, and Fourier-transform infrared (FTIR) spectroscopy were used in this work to characterise and compare the components of water-extractable organic matter (WEOM) fractions from sediment from an estuary, a coastal area, and a port in Peninsular Malaysia, Malaysia. The elemental analysis (H/C and C/N ratios) of the three samples differed, which coincided with the findings of optical indices estimated from UV-Visible and fluorescent spectroscopy analyses. WEOM had an average output of 7.05 to 8.47 mg/L and was very dominating with heavy fraction organic carbon (HFOC). In DOM-KS and DOM-K sediments, the allochthonous component with a high degree of condensation and the aromatic compound was the dominating composition. Meanwhile, the DOM-KT possessed a high autochthonous composition as well as carboxylic and phenolic content. Correlation analysis indicates that the aromaticity index SUVA254 and humification index (HIX) have positive correlations. The combined results of the chemical and spectroscopic analyses indicate that different coastal ecosystems, with the integration of various human and land activities, produce variations in DOM in the coastal area.

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“…The correlation between Mn and OM within site 1, especially at the depth of 10 cm, might be attributed to the recent accumulation of OM on the surface of sediments from East El-Burullus drain also might be correlated with EC as a result of the seawater intrusion in this area. Organic matter can adsorb metal ions from sediments (Damak et al, 2019). Co showed positive correlation within sites 4 and 5 represented El-Hoks and El-Shakhlouba areas.…”

Section: Index Categoriesmentioning

confidence: 94%

Distribution and Ecological Risk Assessment of Heavy Metals in Core Sediments of Burullus Lake, Egypt

El‐Amier¹,

El-Alfy²,

Darwish³

et al. 2021

Egypt. J. of Aquatic Biolo. and Fish.

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Assessment of organic and metallic contamination in the surface sediment of Monastir Bay (Eastern Tunisia): Spatial distribution, potential sources, and ecological risk assessment

Cited by 26 publications

References 32 publications

Risk assessment of heavy metals in the surface sediment at the drinking water source of the Xiangjiang River in South China

Risk assessment of heavy metals in the surface sediment at the drinking water source of the Xiangjiang River in South China

Bulk Chemical and Optical Spectroscopy Characterisations of Dissolved Organic Matter Extracted from the Tropical Coastal Sediment

Distribution and Ecological Risk Assessment of Heavy Metals in Core Sediments of Burullus Lake, Egypt

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