Ecological risk evaluation in bottom-surface sediments and sub-surface water in the subtropical Meghna estuarine system
Assessment of elemental contamination is emerging research in the present world. Metals are hazardous to the environment and people's health when metals concentration might exceed the tolerable level. In this research, 12 elements (i.e., Mn, Ni, Cu, Zn, As, Se, Sr, Co, Pb, Fe, Rb, and Ti) were...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-11-01
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| Series: | Heliyon |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844021024270 |
| _version_ | 1818840243007127552 |
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| author | Solaiman Bin Habib M. Belal Hossain Md. Solaiman Hossain Y.N. Jolly Subrata Sarker |
| author_facet | Solaiman Bin Habib M. Belal Hossain Md. Solaiman Hossain Y.N. Jolly Subrata Sarker |
| author_sort | Solaiman Bin Habib |
| collection | DOAJ |
| description | Assessment of elemental contamination is emerging research in the present world. Metals are hazardous to the environment and people's health when metals concentration might exceed the tolerable level. In this research, 12 elements (i.e., Mn, Ni, Cu, Zn, As, Se, Sr, Co, Pb, Fe, Rb, and Ti) were assessed using the energy dispersive X-ray fluorescence (EDXRF) method in water and sediment samples in four (4) different spawning grounds of Tenualosha ilisha at the confluence of the Meghna River in Bangladesh. A comparative analysis was performed for the first time among four sampling spots, i.e., Chandpur, Bhola, Sandwip, and Hatiya, assessed all possible risk indices-it is a unique thing. Several risk indices were solved to determine the degree of sediment pollution for all 12 elements, e.g., degree of contamination (Cd):6.5–7.01, the modified degree of contamination (mCd): approximately 0.7, the pollution load index (PLI): 0.45–0.51, etc. where all the indices' results showed low or baseline levels of pollution. According to the enrichment factor (EF) computation, slight enrichment of examined metals except Pb and Zn was found. In addition to these, the ecological risk factor (Er) found in the following order (pollution level: low): Cu > Pb > Zn among the four stations. Moreover, a spatial incline of metal accumulation was observed among the four spots: Bhola < Sandwip < Hatiya < Chandpur based on the risk index (RI) set value. However, a strong positive correlation (p < 0.05) between Ca and Fe, Ti and Fe, Ti and Mn, Mn and Fe, Fe and Sr were observed while Ca, and Co were strongly negatively correlated (r = minus (-)0.60, p < 0.05). The cluster analysis was performed and got an asymmetrical cluster among the sampling stations. This study recommends assessing the heavy metal concentration in biological samples, particularly in Hilsha fish. |
| first_indexed | 2024-12-19T04:07:05Z |
| format | Article |
| id | doaj.art-79995921df974f9683a6f49b6f795e10 |
| institution | Directory Open Access Journal |
| issn | 2405-8440 |
| language | English |
| last_indexed | 2024-12-19T04:07:05Z |
| publishDate | 2021-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj.art-79995921df974f9683a6f49b6f795e102022-12-21T20:36:31ZengElsevierHeliyon2405-84402021-11-01711e08324Ecological risk evaluation in bottom-surface sediments and sub-surface water in the subtropical Meghna estuarine systemSolaiman Bin Habib0M. Belal Hossain1Md. Solaiman Hossain2Y.N. Jolly3Subrata Sarker4Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali 3800, BangladeshDepartment of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali 3800, Bangladesh; School of Engineering and Built Environment, Griffith University, Nathan Campus, QLD, AustraliaDepartment of Oceanography, Shahjalal University of Science and Technology, Sylhet 3114, Bangladesh; Corresponding author.Chemistry Division, Atomic Energy Center, Bangladesh Atomic Energy Commission, Dhaka 1000, BangladeshDepartment of Oceanography, Shahjalal University of Science and Technology, Sylhet 3114, BangladeshAssessment of elemental contamination is emerging research in the present world. Metals are hazardous to the environment and people's health when metals concentration might exceed the tolerable level. In this research, 12 elements (i.e., Mn, Ni, Cu, Zn, As, Se, Sr, Co, Pb, Fe, Rb, and Ti) were assessed using the energy dispersive X-ray fluorescence (EDXRF) method in water and sediment samples in four (4) different spawning grounds of Tenualosha ilisha at the confluence of the Meghna River in Bangladesh. A comparative analysis was performed for the first time among four sampling spots, i.e., Chandpur, Bhola, Sandwip, and Hatiya, assessed all possible risk indices-it is a unique thing. Several risk indices were solved to determine the degree of sediment pollution for all 12 elements, e.g., degree of contamination (Cd):6.5–7.01, the modified degree of contamination (mCd): approximately 0.7, the pollution load index (PLI): 0.45–0.51, etc. where all the indices' results showed low or baseline levels of pollution. According to the enrichment factor (EF) computation, slight enrichment of examined metals except Pb and Zn was found. In addition to these, the ecological risk factor (Er) found in the following order (pollution level: low): Cu > Pb > Zn among the four stations. Moreover, a spatial incline of metal accumulation was observed among the four spots: Bhola < Sandwip < Hatiya < Chandpur based on the risk index (RI) set value. However, a strong positive correlation (p < 0.05) between Ca and Fe, Ti and Fe, Ti and Mn, Mn and Fe, Fe and Sr were observed while Ca, and Co were strongly negatively correlated (r = minus (-)0.60, p < 0.05). The cluster analysis was performed and got an asymmetrical cluster among the sampling stations. This study recommends assessing the heavy metal concentration in biological samples, particularly in Hilsha fish.http://www.sciencedirect.com/science/article/pii/S2405844021024270Trace metalContamination factorSpawning groundRiver ShadRisk index |
| spellingShingle | Solaiman Bin Habib M. Belal Hossain Md. Solaiman Hossain Y.N. Jolly Subrata Sarker Ecological risk evaluation in bottom-surface sediments and sub-surface water in the subtropical Meghna estuarine system Heliyon Trace metal Contamination factor Spawning ground River Shad Risk index |
| title | Ecological risk evaluation in bottom-surface sediments and sub-surface water in the subtropical Meghna estuarine system |
| title_full | Ecological risk evaluation in bottom-surface sediments and sub-surface water in the subtropical Meghna estuarine system |
| title_fullStr | Ecological risk evaluation in bottom-surface sediments and sub-surface water in the subtropical Meghna estuarine system |
| title_full_unstemmed | Ecological risk evaluation in bottom-surface sediments and sub-surface water in the subtropical Meghna estuarine system |
| title_short | Ecological risk evaluation in bottom-surface sediments and sub-surface water in the subtropical Meghna estuarine system |
| title_sort | ecological risk evaluation in bottom surface sediments and sub surface water in the subtropical meghna estuarine system |
| topic | Trace metal Contamination factor Spawning ground River Shad Risk index |
| url | http://www.sciencedirect.com/science/article/pii/S2405844021024270 |
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