Sarker, Kishor Kumar and Bristy, Moumita Saha and Alam, Nur and Baki, Mohammad Abdul and Shojib, Fajlul Haque and Quraishi, Shamshad B. and Khan, Md Firoz (2020) Ecological risk and source apportionment of heavy metals in surface water and sediments on Saint Martin's Island in the Bay of Bengal. Environmental Science And Pollution Research, 27 (25). pp. 31827-31840. ISSN 0944-1344, DOI https://doi.org/10.1007/s11356-020-09384-x.
Full text not available from this repository.Abstract
The study aimed to determine eight hazardous heavy metals in surface water and sediment samples collected from the Naf River, Shah Porir Dwip (estuary), and mostly around Saint Martin's Island in the Bay of Bengal. The results of heavy metals in water samples were ranged as Pb 14.7-313.0, Cd 33.0-70.0, Cr < 11.0-37.0, Cu 38.0-57.0, Zn 26.8-69.2, Ni 102.0-285.0, and Hg 0.3-1.6 mu g L-1. The concentrations of metals in sediment samples were ranged as Pb < 10.0-37.5, Cd 0.2-1.0, Cr < 5.0-30.1, Cu < 3.0-30.9, Zn 24.1-88.0, Ni < 4.0-48.3, As 0.1-7.3, and Hg < 0.01-0.08 mg kg(-1) dw. Ni and Cr were strongly correlated, suggesting that this pair of metals might diffuse from a common origin. The contamination factor (C-f(i)) demonstrated that sediment samples were mostly contaminated by Cd and slightly contaminated by Pb and Zn. The geoaccumulation index (I-geo) revealed considerable values for Cd on Saint Martin's Island. Cd as a single regulator posed moderate to considerable risk frequently among the sampling stations. Pollution load index (PLI) values remained below 1 (< 1), which indicated a decrease from baseline pollution value among all stations. However, potential ecological risk (PER) was graded for two stations (St1 and St13) with a moderate-risk zone due to the Cd contribution. However, shipping emission and lithogenic sources were the most predominant for heavy metals in the sediment, which were determined by applying the principal component analysis-absolute principal component score (PCA-APCS).
| Item Type: | Article |
|---|---|
| Funders: | Universiti Malaya [Grant No: FP099-2019A, IIRG009A-2019], Saint Martin’s Island of Bangladesh |
| Uncontrolled Keywords: | Sediments; Heavy metals; Ecological risk; Aquatic life; Principal component analysis |
| Subjects: | G Geography. Anthropology. Recreation > GE Environmental Sciences Q Science > Q Science (General) |
| Divisions: | Faculty of Science > Department of Chemistry Deputy Vice Chancellor (Research & Innovation) Office > Institute of Ocean and Earth Sciences |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 04 Nov 2024 00:26 |
| Last Modified: | 04 Nov 2024 00:26 |
| URI: | http://eprints.um.edu.my/id/eprint/36622 |
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