Levels of Some Trace Metals in Fishes Tissues, Water and Sediment at Tendaho Water Reservoir, Afar Region, Ethiopia

Asefa, Wondimagegne; Beranu, Tarekegn

doi:10.4172/2161-0525.1000313

Cited by 5 publications

(6 citation statements)

References 25 publications

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“…Previous studies in Lake Hawassa focused on water, sediment and fish tissue to assess the extent of pollution with regard to selected metals and have reported high levels of mercury (Hg) in the carnivorous African big barb (Barbus intermedius) (Desta et al, 2006;Desta et al, 2008). Though none of the detected metal concentrations were hazardous to humans (Asefa & Birhanu, 2015;Dsikowitzky et al, 2013), the environmental risks they pose to the lake's ecosystem have not been examined yet. Furthermore, these studies were all conducted during the dry season, in which concentrations are often higher (Obasohan and Eguavoen, 2008).…”

Section: Introductionmentioning

confidence: 99%

Distribution of metals in water, sediment and fish tissue. Consequences for human health risks due to fish consumption in Lake Hawassa, Ethiopia

Melake

Nkuba

Groffen

et al. 2022

Science of The Total Environment

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Section: Introductionmentioning

confidence: 99%

Distribution of metals in water, sediment and fish tissue. Consequences for human health risks due to fish consumption in Lake Hawassa, Ethiopia

Melake

Nkuba

Groffen

et al. 2022

Science of The Total Environment

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“…For the digestion of water and sediment samples, optimization of the analytical standards [31] and literature materials [11,32] were used. During the optimization process, the volume of chemical mixture ratio, the clearness of the solution and time were all considered.…”

Section: Sample Digestion and Analysismentioning

confidence: 99%

“…Digestion continued for 40 min at 180 • C. After 5 min of further cooling, 10 mL 1:1 HCl was added and digested for 20 min at 240 • C. After digestion was completed, the remaining digestate (approx 20 mL) was cooled. The end volume of the digestate was adjusted to 50 mL and filtered using 0.45 µm Whatman GFF prior to analysis [31,32]. Concentrations were analyzed using Graphite Furnace Atomic Absorption Spectrophotometer (GFAAS, model NOVA300) at Amhara design soil chemistry and water quality laboratory.…”

Section: Heavy Metals From Watermentioning

confidence: 99%

“…Contents were cooled for 5 min and 3 mL of H 2 O 2 was added and heated for 10 min at 240 • C. The digestate produced was dissolved in 10 mL of 30% HNO 3 and filtered through Whatman filter paper (pore size 0.45 µm GFF). Finally, heavy metals were analyzed after the end volume of the remaining digestate was adjusted to 50 mL [31,32]. The analysis was conducted using GFAAS (model NOVA300).…”

Section: Heavy Metals From Sedimentmentioning

confidence: 99%

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Heavy Metal Distribution in Surface Water and Sediment of Megech River, a Tributary of Lake Tana, Ethiopia

2022

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Excess heavy metal concentrations caused by severe anthropogenic activities are among the major threats of aquatic pollution in developing countries like Ethiopia. So far, there is limited information regarding concentrations of selected toxic heavy metals in the freshwater bodies of northern Ethiopian highlands. Therefore, this study aimed to assess the current status and spatial distributions of heavy metals in water and sediment samples of the Megech River located in the North Gondar zone of the Amhara region from November 2018 to January 2019. Six different sampling sites (M1–M6) were identified based on the anthropogenic influence. A total of 30 water and 30 sediment samples were collected along the course of the river. Results revealed that concentrations of Cu (0.11 to 0.17 mg L−1), Zn (0.11 to 0.16 mg L−1) and Cr (0.03–0.05 mg L−1) in the water were within international guidelines for domestic use. In the sediment, maximum concentrations of heavy metals detected at site M2 were within the recommended sediment quality guideline for aquatic systems. Generally, higher concentrations of heavy metals were observed at sites with higher anthropogenic activity (M2). Therefore, continuous monitoring and seasonal studies with representative samples including benthic organisms and macrophytes are needed to quantify the impact on downstream sections.

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“…Digestion of water sample was done according to Julius et al 2015 [17]. Sediment samples was digestion according to Asefa, 2015 [18].…”

Section: Site Descriptionmentioning

confidence: 99%

Determination of Heavy Metals Status in Osara Dam

Kabiru¹,

Abdullahi²

2022

JCSN

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Environmental risk assessment and water quality management are becoming increasingly important issues, particularly in view of the large number of contaminants entering the aquatic environment that are harmful to the functioning of an ecosystem. Interest in metals like Zn, Cu, Fe and Mn, which are required for metabolic activities in organisms, lies in the narrow "window" between their essentiality and toxicity. Other heavy metals like Cd, Hg, Cr and Pb may exhibit extreme toxicity even at low levels under certain conditions, thus necessitating regular monitoring of sensitive aquatic environments. The study determines the heavy metal concentrations of water from Osara dam in Kogi central area, as well as their sediments and edible parts of two fish species using ICP-OES. Water samples were collected from eight selected sampling sites from Osara dam. There results were below or within the range of the recommended limit of WHO and other recognized regulatory bodies. Similarly, the head, gills, muscle, and liver of the two fishes sample collected from Osara dams were found to contain all the analysed heavy metals (Mn, Cu, Pb, Cd, Fe, Zn, Cd, Cr, Ni, and Hg) at different levels. Some of the determine metals in the parts of the fishes may not be harmful to consumers because the observed values of heavy metals were below the permissible limits issued by WHO and other recognized regulatory bodies for human consumption however, elements like Cr, Ni and Pb call for serious concerned. Finally, Pearson’s correlation at 95% confidence levels of significance was calculated for finding relationship between elements content in water and fish sample. Significantly positive and negative correlation was observed between different elements in water and fish samples.

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Levels of Some Trace Metals in Fishes Tissues, Water and Sediment at Tendaho Water Reservoir, Afar Region, Ethiopia

Cited by 5 publications

References 25 publications

Distribution of metals in water, sediment and fish tissue. Consequences for human health risks due to fish consumption in Lake Hawassa, Ethiopia

Distribution of metals in water, sediment and fish tissue. Consequences for human health risks due to fish consumption in Lake Hawassa, Ethiopia

Heavy Metal Distribution in Surface Water and Sediment of Megech River, a Tributary of Lake Tana, Ethiopia

Determination of Heavy Metals Status in Osara Dam

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