Assessment of Heavy Metals in the Sediments of Chalan Beel Wetland Area in Bangladesh
| Autor: | Abul Kalam Mohammad Aminul Islam, Mohammad Abdus Salam, Tofayel Ahamed, Tofazzal Islam, Mohammad Giashuddin Miah, Abdul Mannan Akanda, Mohammad Arifur Rahman Khan, Sulav Indra Paul, Fatama Islam, Mohammad Ashraful Alam, Dinesh Chandra Shaha, M. Mahbubur Rahman, Golum Kibria Muhammad Mustafizur Rahman, Mohammad Mizanur Rahman |
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| Rok vydání: | 2021 |
| Předmět: |
010504 meteorology & atmospheric sciences
ecological risk factor enrichment factor Bioengineering Wetland 010501 environmental sciences lcsh:Chemical technology 01 natural sciences lcsh:Chemistry Chemical Engineering (miscellaneous) lcsh:TP1-1185 Ecological risk heavy metals 0105 earth and related environmental sciences geography geography.geographical_feature_category Process Chemistry and Technology Aquatic ecosystem dye complexes Heavy metals Contamination contamination factor lcsh:QD1-999 Environmental chemistry Environmental science Enrichment factor |
| Zdroj: | Processes Volume 9 Issue 3 Processes, Vol 9, Iss 410, p 410 (2021) |
| ISSN: | 2227-9717 |
| Popis: | This study aimed to determine the levels and possible sources of heavy metals (HMs) in the sediments of Chalan beel (a large lake-like aquatic ecosystem) area located in the northwestern part of Bangladesh. The mean concentrations (mg kg−1) of two HMs, Cd (6.22) and Pb (51.39) exceeded the world normal averages (WNA), whereas the mean concentrations (mg kg−1) of Ni (60.46), Zn (10.75), Mn (8.64) and Cu (4.71) were below the WNA. The sediments showed significant enrichment with Cd, Pb and Ni in the studied area. The geo-accumulation index values of Cd (3.72) and Pb (0.76) were significantly higher in the sediments. The contamination factor and potential ecological risk index values of Cd and Pb revealed that Chalan beel was extremely and moderately contaminated by these heavy metals, respectively. Analysis of dye complexes used in handlooms around the Chalan beel areas revealed that mean concentrations of Cd and Pb exceeded the WNA. Furthermore, analyses of principal component, cluster and correlation matrix indicated that the presence of the higher levels of Cd and Pb in the sediments might be linked to various anthropogenic activities like discharged dyes into the beel water from the nearby handloom dyeing factories. |
| Databáze: | OpenAIRE |
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