Assessment of heavy metal contamination status in sediments and identification of pollution source in Ichkeul Lake and rivers ecosystem, northern Tunisia

Ouchir, Nesrine; Aïssa, Lassaâd Ben; Boughdiri, Mabrouk; Aydi, Abdelwaheb

doi:10.1007/s12517-016-2560-1

Cited by 25 publications

(11 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The assessment of the potential eco-risk is performed using sediment quality guidelines (SQGs) and potential ecological risk indices (E r and RI) (Håkanson 1980;MacDonald et al 2000). Such factors as the establishment of aquatic sediment quality guidelines and development of different geochemical and ecotoxicological criteria have resulted in the evaluation of bottom sediment quality in many countries (e.g., Varol 2011;Selvam et al 2012;Wang et al 2012;Zhang et al 2014;Soliman et al 2015;Ouchir et al 2016;Aleksander-Kwaterczak and Plenzler 2019;El-Kady et al 2019). However, the SQGs do not reflect in situ conditions, as sediment chemistry is diversified and pollutants bioavailability depends on physiochemical properties of deposits and local conditions, which additionally may be easily altered during the sampling and operation processes.…”

Section: Responsible Editor: Tomas Matys Grygarmentioning

confidence: 99%

Multiparameter assessment of select metal distribution in lacustrine sediments

Aleksander-Kwaterczak

Kostka

Leśniak

2020

J Soils Sediments

View full text Add to dashboard Cite

Purpose The main objective of the study was the determination of the Cd, Cr, Cu, Pb, and Zn distribution in Wigry Lake sediments, as well as the contamination and ecotoxicological risk assessment on the basis of a large data set. Materials and methods Select metal concentrations were determined via AAS or ICP-MS. Contamination assessment was achieved via the implementation of different geochemical background values, selected pollution indices, and by way of comparison with the limit values of the sediment quality guidelines and supported by cartographic methods. Results and discussion Metal concentrations presented in the paper were associated with a specific type of sediment and sedimentation environment. The highest concentrations of metals were found in the fluvial-lacustrine sediment covering the bottom of the bay of eutrophic character. The lowest amounts were found in the lacustrine chalk and clastic sediment present in the littoral parts of the lake, while profundal sediments were more enriched with metals. Studies revealed that the examined metals have mostly natural, but also anthropogenic origin. The assessment of lake sediments, with the use of geochemical background values and different indices, yielded highly diversified results associated with the variability of background values applied in the study. However, ultimately, the Wigry Lake sediments were found to be only slightly contaminated with Cd, Cr, Cu, and Zn, while Pb concentrations were considered to be more disturbing. The potential ecotoxicological risk was assessed as low. Conclusions Particular attention in this study was paid to the significance of the geochemical background values adopted for calculations, which, in the case of Wigry Lake, gave very divergent results. A uniquely large data set facilitated the performance of a thorough analysis of metal distributions in recent lacustrine sediments and highlighted the necessity of using integrated approaches in aquatic ecosystem studies.

show abstract

Section: Responsible Editor: Tomas Matys Grygarmentioning

confidence: 99%

Multiparameter assessment of select metal distribution in lacustrine sediments

Aleksander-Kwaterczak

Kostka

Leśniak

2020

J Soils Sediments

View full text Add to dashboard Cite

show abstract

“…In our case, the significant Pb contamination in the Ichkeul Lagoon, in the tissue of the mullets and their acanthocephalan, was expected due to the presence of an old lead mine and a metallurgical company ‘Elfouledh’ near the lagoon. The latter is responsible for the release of large quantities of Pb and Cd, which considerably increased the pollution levels in the lagoon (water column, sediments) (Ouchir et al ., 2016). Regarding the rest of the metals, although their source remains unclear, their presence can be attributed mainly to urban inputs, the influx of agricultural products and the discharging of wastewater through wadis that flow into the lagoon (Ouchir et al ., 2016; Ben Salem et al ., 2017).…”

Section: Discussionmentioning

confidence: 99%

“…In addition, we tried to evaluate the potential risk to human health since those two fish species are frequently taken for human consumption. This field survey was performed in one of the most important coastal lagoons in Tunisia (Ichkeul Lagoon), which is known to be impacted by combined pollution from natural and anthropogenic sources (Ben Mbarek, 2001; Ouchir et al ., 2016). Both the water and sediments in this lagoon contain high concentrations of heavy metals such as copper (Cu), iron (Fe), lead (Pb) and zinc (Zn) (Ouchir et al ., 2016; Yazidi et al ., 2017).…”

Section: Introductionmentioning

confidence: 99%

Trace element assessment in Neoechinorhynchus agilis (Rudolphi, 1918) (Acanthocephala: Neoechinorhynchidae) and its fish hosts, Mugil cephalus (Linnaeus, 1758) and Chelon ramada (Risso, 1827) from Ichkeul Lagoon, Tunisia

et al. 2021

View full text Add to dashboard Cite

Acanthocephalans belonging to the species Neoechinorhynchus agilis were collected from two mullets, Mugil cephalus and Chelon ramada from Ichkeul Lagoon in northern Tunisia. Collected parasites, as well as tissues of their hosts (muscle, liver and intestine), were analysed for trace elements (silver, arsenic, cadmium, cobalt, copper, iron, manganese, nickel (Ni), lead (Pb), selenium, vanadium (V), zinc) using inductively coupled plasma mass spectrometry. Our results showed different accumulation patterns of trace elements in fish tissues and parasites. Among the host tissues, liver accumulated the highest metal amounts. Acanthocephalans showed Ni, Pb and V in significantly higher concentrations compared to their host's tissues. Further, the calculated bioconcentration factors demonstrated a 390-fold higher Pb accumulation in the parasite compared to fish muscle. This study is the first field survey in Tunisia dealing with elements’ uptake in parasites and their hosts. Our results corroborate the usefulness of the acanthocephalans for biomonitoring of metal pollution in aquatic ecosystems and promote more research in order to understand host–parasite systems in brackish waters of the Mediterranean area.

show abstract

“…The values of the Igeo allow for an evaluation of the pollution intensity with heavy metals, according to Table 2. The contamination factor describes the pollution level of sediment with a given heavy metal and is calculated as the ratio between the concentration of each measured heavy metal (Cn) and its background value (C bn ) (Equation ( 2)) [39,40]…”

Section: Sample Collection and Analysismentioning

confidence: 99%

Assessment of Heavy Metal Pollution Levels in Sediments and of Ecological Risk by Quality Indices, Applying a Case Study: The Lower Danube River, Romania

Calmuc

Călmuc

Arseni

et al. 2021

Water

View full text Add to dashboard Cite

It is a well–known fact that heavy metal pollution in sediments causes serious problems not only in the Danube basin, but also in the large and small adjacent river streams. A suitable method for assessing the level of heavy metals and their toxicity in sediments is the calculation of pollution indices. The present research aims to assess heavy metal pollution in the Lower Danube surface sediments collected along the Danube course (between 180 and 60 km) up to the point where the Danube River flows into the Danube Delta Biosphere Reserve (a United Nations Educational, Scientific and Cultural Organization – UNESCO, protected area). In addition, this monitored area is one of the largest European hydrographic basins. Five heavy metals (Cd, Ni, Zn, Pb, Cu) were analyzed in two different seasons, i.e., the autumn of 2018 and the spring of 2019, using the Inductively Coupled Plasma Mass Spectrometry (ICP– MS) technique. Our assessment of heavy metal pollution revealed two correlated aspects: 1. a determination of the potential risks of heavy metals in sediments by calculating the Potential Ecological Risk Index (RI), and 2. an evaluation of the influence of anthropogenic activities on the level of heavy metal contamination in the surface sediments, using three specific pollution indices, namely, the Geo–Accumulation Index (Igeo), the Contamination Factor (CF), and the Pollution Load Index (PLI). The results of this pioneering research activity in the region highlighted the presence of moderate metal (Ni and Cd) pollution and a low potential ecological risk for the aquatic environment.

show abstract

Assessment of heavy metal contamination status in sediments and identification of pollution source in Ichkeul Lake and rivers ecosystem, northern Tunisia

Cited by 25 publications

References 43 publications

Multiparameter assessment of select metal distribution in lacustrine sediments

Multiparameter assessment of select metal distribution in lacustrine sediments

Trace element assessment in Neoechinorhynchus agilis (Rudolphi, 1918) (Acanthocephala: Neoechinorhynchidae) and its fish hosts, Mugil cephalus (Linnaeus, 1758) and Chelon ramada (Risso, 1827) from Ichkeul Lagoon, Tunisia

Assessment of Heavy Metal Pollution Levels in Sediments and of Ecological Risk by Quality Indices, Applying a Case Study: The Lower Danube River, Romania

Contact Info

Product

Resources

About