Heavy Metal Contamination in the Sediments of Anzali International Wetland, Northern Iran Based on Type Regional Development
Background: The most important factors and problems threatening the Anzali Wetland are the contaminant load and sediments entering the wetland, as well as lack of an integrated management plan for this wetland. The main objectives of the current research were to explore whether there are significant...
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| Format: | Article |
| Language: | English |
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Arak University of Medical Sciences
2016-08-01
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| Series: | Iranian Journal of Toxicology |
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| Online Access: | http://ijt.arakmu.ac.ir/browse.php?a_id=484&sid=1&slc_lang=en |
| _version_ | 1811299089394958336 |
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| author | Saeed Ganjali Amin Ghasemi |
| author_facet | Saeed Ganjali Amin Ghasemi |
| author_sort | Saeed Ganjali |
| collection | DOAJ |
| description | Background: The most important factors and problems threatening the Anzali Wetland are the contaminant load and sediments entering the wetland, as well as lack of an integrated management plan for this wetland. The main objectives of the current research were to explore whether there are significant differences in concentrations of Zn, Cd, and Pb in surface sediments among different sites (based on type region development) of the Anzali Wetland, Northern Iran.
Methods: Through a field study, samples were collected from 10 stations based on the type of regional development and contaminant source inputs of Anzali Wetland in 2015. Using a hot-block digester, the sediment samples were digested with a 4:1 combination of nitric acid (HNO3) and perchloric acid (HCLO4) for one hour at 40 °C, followed by 3 h at 140 °C. Afterwards, samples were filtered with Whatman 42, filter paper and the filtrate was kept in polyethylene containers at 4 °C, until analysis by atomic absorption spectrometry (AAS).
Results: Mean ± SD levels of metals in the sediments of different stations were 26.7 ± 3.49 (lead), 4.36 ± 0.47 (cadmium), and 88.44 ± 10.06 (zinc) μg g-1 dw. There was a significant difference between the stations of the wetland (P < 0.05). This difference could be due to the variations in the input of contaminant sources into the Anzali Wetland.
Conclusions: The areas, affected by urban and industrial developments, had the highest level of contamination while the agricultural and less-developed areas had the lowest level of contamination, and therefore, protective plans must be implemented in developed areas in order to lower the level of heavy metals. |
| first_indexed | 2024-04-13T06:30:50Z |
| format | Article |
| id | doaj.art-4acd2095369847758664b7306657bc66 |
| institution | Directory Open Access Journal |
| issn | 2008-2967 2251-9459 |
| language | English |
| last_indexed | 2024-04-13T06:30:50Z |
| publishDate | 2016-08-01 |
| publisher | Arak University of Medical Sciences |
| record_format | Article |
| series | Iranian Journal of Toxicology |
| spelling | doaj.art-4acd2095369847758664b7306657bc662022-12-22T02:58:10ZengArak University of Medical SciencesIranian Journal of Toxicology2008-29672251-94592016-08-0110516Heavy Metal Contamination in the Sediments of Anzali International Wetland, Northern Iran Based on Type Regional DevelopmentSaeed Ganjali0Amin Ghasemi 1MSc in Environmental Sciences, Young Researchers and Elite Club, Hamedan Branch, Islamic Azad University, Hamedan, Iran. *Corresponding Author: E-mail: said.ganjali@gmail.com Department of Environmental Sciences, Isfahan University of Technology, Isfahan, Iran.Background: The most important factors and problems threatening the Anzali Wetland are the contaminant load and sediments entering the wetland, as well as lack of an integrated management plan for this wetland. The main objectives of the current research were to explore whether there are significant differences in concentrations of Zn, Cd, and Pb in surface sediments among different sites (based on type region development) of the Anzali Wetland, Northern Iran. Methods: Through a field study, samples were collected from 10 stations based on the type of regional development and contaminant source inputs of Anzali Wetland in 2015. Using a hot-block digester, the sediment samples were digested with a 4:1 combination of nitric acid (HNO3) and perchloric acid (HCLO4) for one hour at 40 °C, followed by 3 h at 140 °C. Afterwards, samples were filtered with Whatman 42, filter paper and the filtrate was kept in polyethylene containers at 4 °C, until analysis by atomic absorption spectrometry (AAS). Results: Mean ± SD levels of metals in the sediments of different stations were 26.7 ± 3.49 (lead), 4.36 ± 0.47 (cadmium), and 88.44 ± 10.06 (zinc) μg g-1 dw. There was a significant difference between the stations of the wetland (P < 0.05). This difference could be due to the variations in the input of contaminant sources into the Anzali Wetland. Conclusions: The areas, affected by urban and industrial developments, had the highest level of contamination while the agricultural and less-developed areas had the lowest level of contamination, and therefore, protective plans must be implemented in developed areas in order to lower the level of heavy metals.http://ijt.arakmu.ac.ir/browse.php?a_id=484&sid=1&slc_lang=enHeavy MetalIranRegional DevelopmentsSediments |
| spellingShingle | Saeed Ganjali Amin Ghasemi Heavy Metal Contamination in the Sediments of Anzali International Wetland, Northern Iran Based on Type Regional Development Iranian Journal of Toxicology Heavy Metal Iran Regional Developments Sediments |
| title | Heavy Metal Contamination in the Sediments of Anzali International Wetland, Northern Iran Based on Type Regional Development |
| title_full | Heavy Metal Contamination in the Sediments of Anzali International Wetland, Northern Iran Based on Type Regional Development |
| title_fullStr | Heavy Metal Contamination in the Sediments of Anzali International Wetland, Northern Iran Based on Type Regional Development |
| title_full_unstemmed | Heavy Metal Contamination in the Sediments of Anzali International Wetland, Northern Iran Based on Type Regional Development |
| title_short | Heavy Metal Contamination in the Sediments of Anzali International Wetland, Northern Iran Based on Type Regional Development |
| title_sort | heavy metal contamination in the sediments of anzali international wetland northern iran based on type regional development |
| topic | Heavy Metal Iran Regional Developments Sediments |
| url | http://ijt.arakmu.ac.ir/browse.php?a_id=484&sid=1&slc_lang=en |
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