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:: Volume 8, Issue 4 (9-2021) ::
jehe 2021, 8(4): 412-424 Back to browse issues page
Measurement of Heavy Metal Pollution in Water and Estimation of Potential Metal Hazards on the Life of Anzali wetland in 2017
Masoumeh Khosravi * , Ehsan Attaran, Nader Bahramifar
Master of Environmental Engineering, Tarbiat Modares University, Tehran, Iran.
Abstract:   (222 Views)
Anzali Wetland is one of the most important international wetlands located on the southern shore of the Caspian Sea. This wetland is habitat to valuable fish, aquatic animals and birds that are of ecological and economic importance. As a result of the increasing industrialization of wetlands, concerns about the impact of human activities on the survival of these valuable ecosystems are increasing. As a result of this study, the aim is to measure the pollution of some heavy metals in the water of the wetland and to estimate the potential risk of metals on the life of the wetland.
Materials and Methods: Water samples were collected from three parts of east, west and center of the wetland. The collected samples were poured into polyethylene containers, then pH of the samples was lowered below 2 with nitric acid and transferred to the laboratory and kept at 4 ° C until the final tests. To analyze the samples, an atomic absorption spectroscopy device equipped with a graphic furnace made by GBC Company from Australia, Sens AA model was used. Statistical analysis was performed using SPSS 19 software
Results: The results indicate that the highest concentration of all studied metals was observed in the eastern part of the wetland. The mean concentrations of heavy metals in the wetland water were 4.943 for cadmium, 9.924 for lead, 82.4 μg / L for mercury and 0.115 for zinc and 0.03 mg / l for copper in the eastern part of the wetland, respectively. . In this study, the order of concentrations of the studied metals in water samples in all three regions was reported as Cu> Pb> Cd> Hg> Zn. Comparison between the concentrations of lead, cadmium, copper and zinc metals studied with world health standards (WHO) showed that these values were lower than the standard level while the concentration of mercury in the water of this wetland was 99% (P <0.001). ) Was higher than the standard. Also, the concentration of all studied elements in the water of Anzali wetland is in the range of no potential danger or low potential danger in both acute and chronic conditions.
Conclusion: The report of high concentration of metals in the eastern part indicates that the most pollution is in the eastern part of the wetland and this area is affected by various human activities. Also, the comparison of the present results with the previous results indicates an increasing trend, and unless special measures are taken by the relevant organizations, we will see the destruction of this valuable wetland in the not too distant future.
Keywords: Pollution, Heavy metals, Water, Potential hazard
Full-Text [PDF 729 kb]   (78 Downloads)    
Type of Study: Research | Subject: Special
Received: 2021/03/2 | Accepted: 2021/09/20 | Published: 2021/09/21
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Khosravi M, Attaran E, Bahramifar N. Measurement of Heavy Metal Pollution in Water and Estimation of Potential Metal Hazards on the Life of Anzali wetland in 2017. jehe. 2021; 8 (4) :412-424
URL: http://jehe.abzums.ac.ir/article-1-875-en.html

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Volume 8, Issue 4 (9-2021) Back to browse issues page
مجله مهندسی بهداشت محیط Journal of Environmental Health Enginering
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