ارزیابی خطر سلامت میگوهای صید شده از سواحل شمالی دریای عمان به برخی عناصر سنگین سمی

نوع مقاله: مقاله پژوهشی

نویسندگان

1 استادیار بخش بهداشت آبزیان، گروه علوم درمانگاهی، دانشکده دامپزشکی، دانشگاه شیراز ، شیراز، ایران

2 دانشجوی دکتری تخصصی بهداشت آبزیان، گروه علوم درمانگاهی، دانشکده دامپزشکی، دانشگاه شیراز، شیراز، ایران

3 دانشیار بخش بهداشت آبزیان، گروه علوم درمانگاهی، دانشکده دامپزشکی، دانشگاه شیراز ، شیراز، ایران

چکیده

آلودگی به عناصر سنگین یک مشکل جدی در بعد جهانی است و با توجه به افزایش سرانه مصرف غذاهای دریایی در ایران، اطمینان از سلامت این خوراک اهمیت زیادی برای مصرف­کنندگان خواهد داشت. از این رو پژوهش حاضر، با هدف تعیین غلظت برخی فلزات سنگین سمی در گوشت میگوهای صید شده از سواحل شمالی دریای عمان و ارزیابی خطر سلامت آن‌ها برای مصرف­کنندگان صورت گرفت. بدین منظور، نمونه­های میگو به تعداد 40 نمونه از هر ایستگاه (هرمز، جاسک و چابهار) در دو زمان تهیه شده و به آزمایشگاه منتقل شدند. آماده‌سازی بخش­های خوراکی آن‌ها از طریق هضم مرطوب و سنجش فلزات سنگین (کروم، سرب، روی، کادمیوم و نیکل) از طریق طیف بینی نشر اتمی (AES) صورت گرفت. نتایج نشان داد که تفاوت آماری معنی­داری بین غلظت کادمیوم در گوشت میگوهای صید شده از بندر جاسک (08/0 میکروگرم بر گرم) با میگوهای صید شده از تنگه هرمز (022/0 میکروگرم بر گرم) و خلیج چابهار (021/0 میکروگرم بر گرم) قابل مشاهده است (P<0.05). هم‌چنین میگوی سفید هندی به‌طور معنی­داری دارای باقی‌مانده کادمیوم بیشتر (448/0 میکروگرم بر گرم) نسبت به میگوهای سرتیز، خنجری و موزی بوده­اند (P<0.05). با توجه به این‌که کلیه فلزات سنگین مورد سنجش در تحقیق حاضر در محدوده مجاز رهنمودهای جهانی (WHO و FAO) قرار گرفته­اند و هم‌چنین شاخص THQ کل برای گروه­های سنی کودکان (258/0) و بزرگسالان (147/0) کم‌تر از 1 بوده است، با مصرف مداوم و حتی روزانه میگوهای صید شده از این منطقه خطری متوجه مصرف کنندگان نخواهد بود. 

کلیدواژه‌ها


عنوان مقاله [English]

Health risk assessment of some toxic trace metals in captured shrimps from the northern coasts of Oman Sea

نویسندگان [English]

  • A. Gholamhosseini 1
  • N. Shiry 2
  • Siyavash Soltanian 3
  • M. Ali 2
1 Assistant Professor, Department of Clinical Sciences, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
2 Ph.D Student of Aquatic Health, Department of Clinical Sciences, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
3 Associate Professor, Department of Clinical Sciences, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
چکیده [English]

Heavy metals contamination is one of the most serious problems around the world. Regarding the increasing trend of the tendency for seafood consuming in Iran, assurance to the health of these foods would be of great concern for the consumers. Accordingly, the present study was conducted in order to assess the concentrations of some toxic metals in the captured shrimps from the northern coasts of Oman sea as well as to investigate their health risk for the eaters. For this purpose, 40 samples were obtained at two times from each station (Hormoz, Jask, and Chabahar). Samples preparation and measuring of heavy metals (Cr, Pb, Zn, Cd, and Ni) have been accomplished via wet digestion method and atomic emission spectroscopy (AES), respectively. Results showed a significant difference (P<0.05) was observed between the cadmium concentrations of shrimps captured from Jask port (0.08 µg/g) with Strait of Hormuz (0.022 µg/g) and Chabahar Bay (0.021 µg/g) samples. Moreover, white Indian shrimp (Fenneropenaeus indicus) contained significantly (P<0.05) more cadmium residues (0.448 µg/g) than other species including Jinga (Metapenaeus affinis), kiddi (Parapenaeopsis stylifera), and banana shrimp (F. merguiensis). Heavy metals contents in all shrimp samples were below the acceptance limit of WHO and FAO standards. Furthermore, total THQ for children (0.258) and adults (0.147) were found less than 1. Consequently, continuous and even daily consumption of the Oman sea shrimps is not a health hazard for the consumers.

کلیدواژه‌ها [English]

  • Marine shrimp
  • Heavy metals
  • Health risk
  • Target hazard quotient (THQ)
  • Oman Sea
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