Pollution and ecological risk assessments for heavy metals in coastal, river, and road-deposited sediments from Apia City in Upolu Island, Samoa
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Title
- Pollution and ecological risk assessments for heavy metals in coastal, river, and road-deposited sediments from Apia City in Upolu Island, Samoa
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Author(s)
- Jeong, Hyeryeong; Ra, Kongtae
- KIOST Author(s)
- Ra, Kongtae(나공태)
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Alternative Author(s)
- 정혜령; 나공태
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Publication Year
- 2023-03
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Abstract
- This study was the first to investigate the pollution and ecological risks of heavy metals in coastal, river/stream and road-deposited sediments (RDS) from Apia in Samoa. Cr and Ni concentrations in sediment samples were higher than those of other metals. River sediments and RDS had relatively high EF values around the intensive commercial areas, with a moderate to significant enrichment of Cu, Zn, Cd, and Pb. The results indicate that Cr and Ni have a natural origin from volcanic parent materials, while Cu, Zn, Cd, and Pb originated from anthropogenic activities, such as traffic emissions and the discharge of municipal wastewater. The assessments of pollution and ecological risk revealed that coastal sediments adjacent to the river are anthropogenically contaminated and present a moderate ecological risk. This study demonstrates that metals that have accumulated in the urban impermeable layer and river/stream bed have flowed into the coastal environment through runoff. © 2023 Elsevier Ltd
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ISSN
- 0025-326X
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/43905
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DOI
- 10.1016/j.marpolbul.2023.114596
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Bibliographic Citation
- Marine Pollution Bulletin, v.188, 2023
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Publisher
- Pergamon Press Ltd.
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Keywords
- Coastal environment; Enrichment factor; Metal pollution; Pollution load index; Potential ecological risk index; Runoff
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Type
- Article
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Language
- English
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Document Type
- Article
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