Contamination and health risks of trace metals in water and sediments of May Sieley stream, Ethiopia

The Stockholm Convention underpins the significance of monitoring the toxic trace metals in ecosystems. This study was conducted in May Sieley stream, North Ethiopia, in 2020. The main aim was to assess the spatial-temporal variation of trace metals in water and sediments using the ICP-OES technique...

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Bibliographic Details
Published in:Physics and chemistry of the earth. Parts A/B/C 2023-02, Vol.129, p.103315, Article 103315
Main Authors: Habineza, Elias, Makwinja, Rodgers, Inagaki, Yoshihiko
Format: Article
Language:English
Subjects:
Carcinogenic risk levels
Non-carcinogenic levels
Trace elements
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Summary:The Stockholm Convention underpins the significance of monitoring the toxic trace metals in ecosystems. This study was conducted in May Sieley stream, North Ethiopia, in 2020. The main aim was to assess the spatial-temporal variation of trace metals in water and sediments using the ICP-OES technique and further evaluate their health risks. PCA and correlation analysis identified the sources of pollution, mutual dependence, and identical behavior of trace metals. Except for Hg, the Cu, Zn, Ni, As, Cr, Cd, and Pb were high in water during the post-rainy season. The trace metals concentrations were lower in dry season sediment than in post-rainy season except for Cu and Zn. The post-rainy season showed a higher upstream concentration than the rest. There was a strong positive correlation (0.84 
ISSN:1474-7065
1873-5193
DOI:10.1016/j.pce.2022.103315