Publication Date:
2021-05-19
Description:
Anzali International wetland is one of the most valuable water resources as registered in Ramsar
convention with an extent of about 150 km2 in the south Caspian Sea. This wetland, not only has
ecological and biological importance for migratory birds and rare fish species, but also is used for farms to
discharge into the Caspian Sea through this wetland. Therefore its pollution control is very important for
human life. In this study 6 elements (copper, iron, lead, zinc, cadmium and nickel ) in Anzali wetland
were analyzed by Atomic Absorption spectroscopy method. . Water samples were collected from ten
sampling sites seasonally and the results were compared with each other. The detection limits obtained
were 0.016 ng/ml for cadmium, 0.02 ng/ml for copper (Cu), lead (Pb) and zinc (Zn), 0.025 ng/ml for iron
(Fe) and 0.026 ng/ml for nickel (Ni). Relative Standard Deviation (RSD) was 1.7%. The results showed that
these heavy metals were present in the water. Concentrations of Cu (0.6 mg/l) were higher than
international standards reported in some stations. This can be due to industries around the wetland. The
average level of heavy metals was higher in spring than in the other seasons which can be due to increase
in seasonal rainfall and intensity of flow from rivers to wetland
Description:
Published
Keywords:
Survey
;
Concentrations
;
Atomic absorption spectroscopy
;
Heavy metals
;
Copper
;
Iron
;
Lead
;
Cadmium
;
Zinc
;
Nickel
;
Water
;
Quality
;
Pollution
Repository Name:
AquaDocs
Type:
Journal Contribution
,
Refereed
Format:
pp.11-18
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