Baseline study of heavy metal contamination in the Sangu River estuary, Chattogram, Bangladesh
| Autor: | A.S. Shafiuddin Ahmed, Trisha Biswas Shanta, Mohammad Belal Hossain, Sanjida Afrin Semme, Md. Kamal Hossain |
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| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Pollution Geologic Sediments Metal contamination media_common.quotation_subject Reference site chemistry.chemical_element 010501 environmental sciences Aquatic Science Oceanography Risk Assessment 01 natural sciences Rivers Metals Heavy 0105 earth and related environmental sciences media_common Bangladesh Cadmium geography geography.geographical_feature_category 010604 marine biology & hydrobiology Sediment Heavy metals Estuary Contamination chemistry Environmental chemistry Environmental science Estuaries Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Marine Pollution Bulletin. 140:255-261 |
| ISSN: | 0025-326X |
| DOI: | 10.1016/j.marpolbul.2019.01.058 |
| Popis: | Sediment samples were collected from twelve selected sites of the Sangu River estuary and seven metals (As, Cr, Cu, Cd, Pb, Ni, Zn) were analyzed with Inductively Coupled Plasma-mass Spectrometry (ICP-MS) to assess the contamination degree of heavy metals in the Sangu River estuary and to represent it as a reference site. This study revealed the descending order of studied metals (mg/kg) observed in sediment as Zn (88.97 ± 58.97) > Ni (32.75 ± 16.09) > Cu (29.2 ± 10.78) > Cr (25.14 ± 5.20) > Pb (19.57 ± 7.01) > As (2.58 ± 2.55). Cadmium was observed below the detection level. Various indices like geo-accumulation index (Igeo), contamination factor (CF), pollution load index (PLI) suggested that the Sangu River estuary is not contaminated by studied metals excepting Pb. PCA and correlation matrix analysis indicates that Pb and Zn may have anthropogenic sources and As, Ni, Zn, Cu, Cr may come from natural sources. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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