بررسی تجمع غلظت جیوه کل در بافت خوراکی ماهیان پر مصرف تالاب انزلی و ارزیابی ریسک ناشی از آن برای خانواده های شیلاتی و غیرشیلاتی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه محیط زیست، واحد تهران شمال، دانشگاه آزاد اسلامی، تهران، ایران

2 گروه محیط زیست، دانشکده منابع طبیعی، دانشگاه تربیت مدرس، نور، ایران

چکیده

فلز سمی جیوه به یکی از مهم ترین آلاینده های فلزی تالاب انزلی تبدیل شده است به نحوی که سلامت و کیفیت ماهیان خوراکی این اکوسیستم را برای مصرف کنندگان به شکل جدی به خطر انداخته است. تعداد 10 عدد از چهار گونه ماهی شامل سوف معمولی (Sander lucioperca)، اردک ماهی (Esox luscious)، کپور معمولی (Cyprinus carpio) و کاراس (Carassius aurata) صید شدند. از روش جذب اتمی برای سنجش جیوه استفاده شد. فاکتورهای ضریب خطر غیر سرطان زایی (HQ)، جذب روزانه جیوه (DI)، مقدار مجاز مصرف روزانه ماهی (CRlim) و مقدار مجاز مصرف ماهیانه (CRmm) برای کودکان، زنان و بزرگسالان برای خانوارهای شیلاتی و غیر شیلاتی ارزیابی گردید. میانگین غلظت جیوه کل در بافت خوراکی ماهیان سوف معمولی، اردک ماهی، کپور معمولی و کاراس به ترتیب در محدوده 8/46±149/93، 4/37±165/17، 8/83±78/92 و 5/51±60/7 نانو گرم بر گرم وزن تر قرار داشت. گونه اردک ماهی بیش ترین جیوه را در بافت خوراکی با کم ترین میزان مجاز غذا در ماه 6/6، 5/1 و 5/6 برای کودکان، زنان و بزرگسالان به ترتیب در خانواده های شیلاتی نشان داد. ارزیابی ریسک سلامت خطر غیر سرطان زایی را برای جیوه در اردک ماهی و ماهی سوف برای بزرگسالان و زنان نشان داد (HQ>1). بنابراین تالاب انزلی به شدت با فلز جیوه آلوده شده است و تجمع این فلز در بافت خوراکی ماهیان پر مصرف این زیستگاه می تواند سلامت افراد خانوارهای شیلاتی را بیش از سایر افراد تهدید نماید.  

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Investigation of total mercury concentration in the edible tissue of highly-consumed fish and health risk assessments for fishermen and non-fishermen families in the Anzali wetland

نویسندگان [English]

  • Hedieh Parang 1
  • Abbas Esmaili Sari 2
  • Mojgan Zaeimdar 1
1 Department of Environment Science, North Tehran Branch, Islamic Azad University, Tehran, Iran
2 Department of Environment Science, Faculty of Natural Resources and Marine Science, Tarbiat Modares University, Noor, Iran
چکیده [English]

In recent years, the toxic metal mercury has become one of the most important metal pollutants in Anzali wetland, so that the health and quality of edible fish in this ecosystem is seriously endangered for consumers. 10 species of four fish including common perch, duck, common carp and carp were caught. Atomic absorption method was used to measure mercury. Non-carcinogenic risk factors (HQ), daily mercury uptake (DI), allowable daily intake of fish (CRlim) and allowable monthly intake (CRmm) for children, women and adults in both fishery and non-fishery families were assessed. The mean concentrations of total mercury in the oral tissues of common perch, duck, common carp and carp were in the range of 8.46±149.93, 4.37±165.17, 8.83±78.92 and 60.7. 5.51 ng/g fresh weight, respectively. Duck species showed the highest mercury in the edible tissue with the lowest allowable amounts of food per month at 6.6, 5.1 and 5.6 for children, women and adults in fishery families, respectively. Health risk assessment showed a non-carcinogenic risk for mercury in duck and perch for adults and women (HQ>1). Therefore, Anzali wetland is heavily contaminated with mercury metal and the accumulation of this metal in the edible tissue of fish consuming this habitat can threaten the health of fishery households more than other people.

کلیدواژه‌ها [English]

  • Carnivorous fish
  • Omnivorous fish
  • Mercury accumulation
  • Edible tissue
  • Non-carcinogenic risk
  • Permissible intake
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