Concentration Determination of Arsenic in Rainbow Trout (Oncorhynchus mykiss) and risk assessment in fish farm of Kurdistan province
Message:
Abstract:
Arsenic as a heavy metal is pollutant of aquatic ecosystems that caused poisoning and concern for fish consumption. The aim of this study was to evaluate the concentration of arsenic in liver and muscle tissues, also its association with weight and length of rainbow trout (Oncorhynchus mykiss) and its risk assessment. 60 rainbow trout species were prepared in two fish farming ponds located in Sanandaj (Nanle Village) and Kamyaran (Divznav Village), (30 pieces of each pond) and after acid digestion of the samples, the concentration of arsenic metal was measured by the Phonix 986 Atomic Adsorption Spectroscopy. The average concentration of arsenic metal in liver and muscle tissues was 28.16 and 15.68 μg/g, obtained. Arsenic accumulation in the liver tissue was more than muscle tissue (P<0.05). A relatively strong correlation was found between the concentration of this metal with density and total weight (p <0.01). Also, the results showed that there was no significant difference between the basins of Kamyaran and Sanandaj in terms of the concentration of arsenic in the studied tissues. According to the calculation results of the risk index for daily consumption of 25 grams of suspected fish, the maximum daily allowable dose of 1.3 grams was calculated for an adult population of 70 kg. By comparing the concentrations measured in this study with the international standards of muscle tissue, the concentration of arsenic is higher than the USEPA, FAO and WHO standards.
Article Type:
Research/Original Article
Language:
Persian
Published:
Journal of Animal Environment, Volume:11 Issue:2, 2019
Pages:
241 - 246
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