Accumulation of Cadmium and Lead in Edible Tissues of (Rutilus frisii kutum) in the Anzali Wetland
Subject Areas : Water Pollution
A. A. Khanipour
1
(1. Iranian Fisheries Science Research Institute)
M. Seifzadeh
2
(National Center of Aquatic Processing Research)
M. Ahmadi
3
(National Center of Aquatic Processing Research)
Gh Zare Gashti
4
(National Center of Aquatic Processing Research)
Keywords: Cadmium, Lead, Anzali Wetland, edible tissue, white fish,
Abstract :
This study intends to evaluate the accumulation of heavy metals such as lead and cadmium in the edible tissue of whitefish in Anzali Lagoon and comparewith international standards of FDA and FAO. Whitefish were caught from the west, central and east regions of Anzali Lagoon. Sampling was conducted in the fall season. Levels of heavy metals were measured using flame atomic absorption spectrometry. The average concentration of cadmium in whitefish from center of wetlands was 0.05 μg/g, in western and eastern parts of wetland was 0.03 μg/g dry weight, respectively. There was no significant difference (P> 0.05) in the levels of cadmium in different parts of the lagoon. The average concentration of lead in whitefish in the western parts of wetlands was 0.33 μg/g, in central and eastern parts 0.53 and 0.41 μg/g dry weight, respectively. No significant difference (P> 0.05) was noticed in the lead levels in different parts of the lagoon. Pb in central region of wetland showed no significant increase compared with international standards. Cd concentration in all parts of the lagoon was within the range of international standards
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