سنجش میزان فلزات سنگین (سرب، قلع و روی) در بافت های خوراکی (عضله) و غیر خوراکی (کبد) ماهی فیتوفاگ(Hypophthalmichthys molitrix) تالاب انزلی

نوع مقاله: مقاله کامل

نویسندگان

1 استادیار گروه زیست دریا، دانشکده علوم دریایی و اقیانوسی، دانشگاه علوم و فنون دریایی خرمشهر

2 دانشجوی کارشناسی ارشد، دانشکده علوم دریایی و اقیانوسی، دانشگاه علوم و فنون دریایی خرمشهر

3 دانش آموخته کارشناسی ارشد، دانشکده علوم دریایی و اقیانوسی، دانشگاه علوم و فنون دریایی خرمشهر

چکیده

 این تحقیق جهت بررسی غلظت فلزات سنگین سرب، قلع و روی در بافت های کبد و عضله 60 عدد ماهی فیتوفاگ(silver carp)  در ایستگاه های مختلف تالاب انزلی واقع در جنوب غربی دریای خزر شامل: پیربازار، انزلی، خزرویلا، بشمن، سنگاچین و آبکنار درفروردین 1390 انجام شد. مواد و روش ها: نمونه ها طبق روش استاندارد (1999 ، MOOPAM)  آماده سازی و با کمک دستگاه جذب اتمی میزان فلزات در نمونه ها اندازه گیری شد. نتایج: براساس نتایج میزان تجمع سرب و قلع به طور معنی داری در بافت عضله بیش از بافت کبد بود. درحالی که میزان تجمع روی با اختلاف معنی دار در کبد بیشتر از عضله بود. به طور کلی میزان غلظت سه فلز برای هر دو بافت تابع الگوی Zn>Sn>Pb  و نیز برای ایستگاه ها ی نمونه برداری تابع الگوی آبکنار ≤  خزرویلا < سنگاچین ≤ بشمن ≤ پیربازار ≤ انزلی بود. نتایج حاصل از مطالعه حاضر با معیارهای استاندارد مقایسه شد. نتیجه به دست آمده نشان می دهد که میزان سرب در کبد در همه ایستگاه ها از میزان استاندارد WHO پایین تر بود، ولی در عضله در همه ایستگاه ها به جز آبکنار بالاتر از این میزان بود. میزان قلع و روی در هردو بافت در همه  ایستگاه ها کمتر از استانداردهای جهانی بود.

عنوان مقاله [English]

Measurement of heavy metals (Pb, Sn and Zn) in edible (muscle) and inedible (liver) tissues of silver carp (Hypophthalmichthys molitrix) from Anzali wetland

نویسندگان [English]

  • N. Salamat 1
  • Kh. Khalifi 2
  • E. Etemadi 3
  • Y. Mohammadi 3
  • A. Movahedinia 1
1 Assistant professore, Department of Marin Biology, Faculty of Marin science, Korramshahr University of Marin sciense and Technology
2 M.Sc. student, Department of Marin Biology, Faculty of Marin science, Korramshahr University of Marin sciense and Technology
3 SGraduted student, Department of Marin Biology, Faculty of Marin science, Korramshahr University of Marin sciense and Technology
چکیده [English]

Aim: This study was conducted to investigate the accumulation of three heavy metals including lead, tin and zinc in the liver and muscle tissues of 60 silver carp (Hypophthalmichthys molitrix) collected from different stations of the Anzali wetland (located at the west south of Caspian sea): Pirbazar, Anzali, Khazarvila, Beshman, Sangachin and Abkenar, in April 2011. Materials and methods: Samples were prepared according to standard method (MOOPAM, 1999) and amounts of three heavy metals were measured using atomic absorption spectrophotometer. Results: Based on the results the concentrations of lead and tin in muscle were significantly higher than liver. In contrast, zink accumulation was significantly higher in the liver than muscle. The accumulation and distribution pattern of metals in the fish from different stations were as follow: Zn> Sn> Pb, and Abkenar ≤ Khazarvila < Sangachin ≤ Beshman ≤ Pirbazar ≤ Anzali. Conclusion: the Pb concentration in the liver of fish from all stations was lower than permissible limit of WHO. However, the Pb accumulation in the muscles of fish collected from all stations (except Abkenar) were higher than permissible limit of WHO. The levels of tin and zinc in both tissues of all fish were lower than permissible limit of WHO

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