ارزیابی ریسک غیرسرطانزایی فلزات سرب، روی و کادمیوم مصرف کپور ماهی تالاب چغاخور

نوع مقاله: مقاله پژوهشی

نویسندگان

1 استادیار گروه محیط زیست، دانشکده منابع طبیعی و محیط زیست، دانشگاه ملایر، ملایر، ایران

2 استادیار گروه محیط زیست دانشگاه آزاد اسلامی، واحد اصفهان (خوراسگان)، اصفهان، ایران

3 دانش‌آموخته کارشناسی ارشد دانشگاه آزاد اسلامی، واحد اصفهان (خوراسگان)، اصفهان، ایران

چکیده

عوارض جبران‌ناپذیر فلزات سنگین بر بدن انسان سبب افزایش حساسیت و اهمیت کنترل مقدار آن‌ها در مواد غذایی شده است. در این راستا سنجش فلزات و ارزیابی ریسک سلامتی آن‌ها در کپور ماهی تالاب چغاخور دارای اهمیت بسزایی است. هدف این مطالعه، تعیین غلظت فلزات سنگین سنگین سرب، روی و کادمیوم در بخش خوراکی ماهی کپور در تالاب چغاخور بود. برای این منظور 45 نمونه کپور ماهی پس از هضم، با دستگاه جذب اتمی مورد ارزیابی قرارگرفتند. نتایج نشان داد مقادیر فاکتور وضعیت کپور ماهی تالاب چغاخور در حدود استاندارد معرفی شده برای ماهیان آب‌های آزاد قرار ندارد و میزان جذب روزانه و هفتگی فلزات با اختلاف چشم‌گیری به‌ترتیب از مقادیر PTDI و PTWI کم‌تر می‌باشد. هم‌چنین همبستگی منفی و معنی‌داری (01/0 P<) بین غلظت فلز سرب و کادمیوم و نیز همبستگی مثبت و معنی‌داری بین طول و فاکتور وضعیت ماهی (01/0 P<) وجود دارد. نتایج ارزیابی ریسک غیرسرطان‌زایی بیشترین مقادیر THQ را برای فلز روی و کم‌ترین مقادیر را برای فلز کادمیوم نشان داد که این روند در شکل‌گیری TTHQ نیز برقرار بود و TTHQ هیچ‌یک از فلزات بالاتر از یک نبود. هم‌چنین میزان مجاز مصرف برای کودکان و بزرگسالان روند کاهشی فلزات کادمیوم، سرب و روی را نشان داد. مقایسه میانگین غلظت فلزات سنگین در این مطالعه با استانداردهای ارائه شده و دیگر مطالعات در اکثر موارد حاکی از کم‌تر بودن مقادیر این مطالعه و اطمینان بالا از عدم ایجاد ریسک سرطانزایی نسبت به مصرف کپور ماهی تالاب چغاخور بود.

کلیدواژه‌ها


عنوان مقاله [English]

Risk assessment of non-carcinogenic effects of lead, cadmium, and zinc consumption of Cyprinus carpio from Chagakhor wetland

نویسندگان [English]

  • S. Mortazavi 1
  • A. Chamani 2
  • M. Takesh 3
  • M. Pakzad 3
1 Assist Prof. Natural Resources and Environmental faculty, Malayer University, Malayer, Iran
2 Assist Prof. at Environmental Department, Islamic Azad University, Isfahan (Khorasgan) Branch, Isfahan, Iran
3 . M.Sc Graduate of Environmental Department, Islamic Azad University, Isfahan (Khorasgan) Branch, Isfahan, Iran
چکیده [English]

Given adverse impacts of heavy metals in the human body, sensitivity and importance are the monitoring of food products. In this regard, investigation of heavy metals concentration and health risk assessment in Cheghakhor Wetland has been momentous. In the present research, to determine heavy metals concentrations in edible parts of fish, a number of 45 specimens of common carps were digested the heavy metals concentrations were measured using Atomic Absorption Spectrophotometer.  According to the results, carp condition factor did not follow standards released for freshwater fish so that daily and weekly heavy metals uptake were significantly lower than PTDI and PTWI value. At the same time, a significant negative correlation between Pb and Cd and a significant positive correlation between length and condition factor with 99% probability level was found. Risk assessment on non-carcinogenicity showed the highest and lowest THQ in Zn and Cd respectively, the same was the case for TTHQ formation and TTHQ for none of the heavy metals was not >1. Also, the maximum allowable level for children and adults consumption showed a descending trend in heavy metals Cd, Pb, and Zn. Mean's comparison of heavy metals with released standards and literature review indicated low concentration of these metals. This is promising to ensure on consumption of Cheghakhor Wetland common carps and its Non-Carcinogenicity risk.

کلیدواژه‌ها [English]

  • Cheghakhor Wetland
  • Non-Carcinogenicity risk
  • Carpss

 

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