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Determination of Lead and Cadmium Levels in Caspian kutum and Rainbow Trout Supplied in Gonbad Kavous
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Sarina Jafari   , Mohammadhosein Movassagh *  |
| Department of Food Hygiene and Quality Control, Faculty of Veterinary Medicine, Shabestar Branch, Islamic Azad University, Shabestar, Iran , drmhmg@gmail.com |
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Abstract: (1848 Views) |
Background and Aim: Various natural and human activities, non-biodegradability and toxicity of heavy metals even in low concentrations are among causative agents of aquatic ecosystem pollution, which can cause serious threat to the environment and humans. The aim of study was to investigate the level of lead and cadmium in the edible tissue (muscle and skin) of caspian kutum and rainbow trout in Gonbad Kavus, Iran and also to compare the accumulation levels with the European Union standard.
Methods: To investigate the concentration of lead and cadmium, 25 samples of caspian kutum and 25 samples of rainbow trout were randomly collected from fish supply centers in Gonbad Kavus, from April to June 2022. The levels of lead and cadmium in the samples were measured using the graphite furnace atomic absorption spectrometry technique.
Results: The concentration of lead and cadmium in Caspian white fish was 587±22.30 and 120.89±6.07 µg/kg and in rainbow trout 323.72±9.89 and 62.37±3.98 µg/kg, respectively. The levels of lead and cadmium in caspian kutum were significantly higher than those of rainbow trout (P<0.05). The amount of lead and cadmium in caspian kutum samples exceeded the EU standard limit, while the levels exceeded the EU standard limit in 30% and 36% of rainbow trout samples, respectively.
Conclusion: The levels of lead and cadmium heavy metals pollution were high in rainbow trout compared to caspian kutum in Gonbad Kavus, Iran. It is suggested that in order to find the causes of the pollution and provide suitable solutions, the amount of these heavy metals must be periodically measured in rainbow trout compared to caspian kutum in Gonbad Kavus, Iran. The influx of human and industrial sewage from Iran and other countries in the Caspian Sea and the lowering of the water level in the Caspian Sea increase the contamination of seafood with heavy metals. Therefore, the pollution of water resources in areas such as Gorgan Bay with sewage should be prevented. |
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| Keywords: Rainbow Trout, Caspian white fish, Lead, Cadmium |
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Full-Text [PDF 471 kb]
(998 Downloads)
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Type of Study: Original Article |
Subject:
Marine Medicine
Received: 2023/02/21 | Accepted: 2023/09/5 | Published: 2023/12/21
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