بررسی و مقایسه غلظت فلزات سنگین (نیکل، سرب، کادمیوم و روی) در عضله ماهیان شوریده، حلوا سیاه، شیر و کوتر در منطقه چابهار در فصل تابستان

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانش‌آموخته کارشناسی ارشد آلودگی محیط‌زیست، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران

2 استاد گروه محیط‌‌زیست، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران

3 استادیار گروه جغرافیا و برنامه ریزی محیطی، دانشگاه سیستان و بلوچستان، زاهدان، ایران

4 استادیار مرکز تحقیقات ارتقای سلامت، دانشگاه علوم پزشکی زاهدان، زاهدان، ایران

5 باشگاه پژوهشگران جوان و نخبگان، واحد اهواز، دانشگاه آزاد اسلامی، اهواز، ایران

چکیده

فلزات سنگین از آلاینده­هایی هستند که در اکوسیستم­های آبی مشکلات بسیاری را برای آبزیان و درنهایت برای انسان ایجاد می­کنند. این پژوهش در سال 1392 به‌منظور تعیین میزان فلزات سنگین نیکل، سرب، کادمیوم و روی در عضله ماهیان شوریده، حلوا سیاه، شیر و کوتر منطقه چابهار انجام شد. 96 نمونه ماهی از صیدگاه بندر چابهار از دو منطقه ساحلی و دریایی تهیه شد. جهت استخراج فلزات از بافت­های موردمطالعه، از روش هضم مرطوب استفاده شد و تعیین غلظت فلزات سنگین به‌وسیله دستگاه جذب اتمیYounglin AAS8020  صورت پذیرفت. میزان کادمیوم در ماهی حلوا سیاه (0450/0 میلی­گرم در کیلوگرم) نسبت به گونه­های دیگر بالاتر بود. همچنین پایین­ترین میزان این عنصر در ماهی شوریده و شیر (0150/0 میلی­گرم در کیلوگرم) به دست آمد. میزان سرب در ماهی کوتر (0125/0 میلی­گرم در کیلوگرم) نسبت به گونه­های دیگر پایین­تر بود. میزان نیکل در ماهی کوتر (1800/4 میلی­گرم در کیلوگرم) نسبت به گونه­های دیگر بالاتر به دست آمد. پایین­ترین میزان این عنصر در ماهی شیر (0150/0 میلی­گرم در کیلوگرم) بود. میزان روی در ماهی کوتر (5450/0 میلی­گرم در کیلوگرم) نسبت به گونه­های دیگر بالاتر بود. پایین­ترین میزان این عنصر در ماهی شیر (0150/0 میلی­گرم در کیلوگرم) مشاهده شد. میزان فلز کادمیوم، سرب و روی در مقایسه با آستانه استانداردهای جهانی سازمان غذا و کشاورزی، سازمان بهداشت جهانی، وزارت کشاورزی شیلات انگلستان و انجمن ملی بهداشت و سلامت استرالیا و سازمان غذا و داروی امریکا پایین­تر بود. غلظت نیکل در عضله ماهی کوتر در مقایسه با استانداردهای جهانی بیشتر به دست آمد.با توجه به نتایج به‌دست‌آمده، میزان فلزات سنگین موجود در عضله ماهیان موردمطالعه هیچ­گونه خطری برای مصرف انسان در برندارد.

کلیدواژه‌ها


عنوان مقاله [English]

The study and comparison of heavy metals concentration (Nickel, Lead, Cadmium and Zinc) in the muscle of Otolithes ruber, Parastromateus niger, Scomberomorus commerson and Sphyraena jello from Chabahar area in summer

نویسندگان [English]

  • E. Shahri 1
  • N. Khorasani 2
  • G.h. Noori 3
  • F. Kord Mostafapour 4
  • M. Velayatzadeh 5
1 M.Sc Graduate in Environmental Pollution, Science and Research Branch, Islamic Azad University, Tehran, Iran
2 Professor of Department of Environment, Science and Research Branch, Islamic Azad University, Tehran, Iran
3 Assistant Professor of Department Geography and Environmental Planning, University of Sistan and Baluchestan, Zahedan, Iran
4 Faculty member of the Center for Health Promotion Research, University of Medical Sciences, Zahedan, Iran
5 Young Researchers Elite and Club, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
چکیده [English]

The heavy metals are from the pollutants which create too much problems in aquatic ecosystems for aquatics and human. This study was done concentration of heavy metals Nickle, Cadmium, Lead  and  Zinc and risk assessment in the muscle of Otolithes ruber, Parastromateus niger, Scomberomorus commerson and Sphyraena jello in 2013. Ninety six  samples of fishes was prepared of coastal and marine from the Chabahar, Iran. Metals were extracted from the tissues using wet Digestion method and concentration of the heavy metals were measured by Atomic Absorption Spectrophotometer Younglin AAS8020. Concentration of Cd was in Parastromateus niger (0.0450 mg Kg-1) higher than other species. Also, the lowest Concentration of this element was in Otolithes ruber and Scomberomorus commerson (0.0150 mg Kg-1). Concentration of Pb was in Sphyraena jello (0.0125 mg Kg-1) lower than other species. Concentration of Ni was in Sphyraena jello (4.1800 mg Kg-1) higher than other species. Also, the lowest Concentration of this element was in Scomberomorus commerson (0.0150 mg Kg-1). Concentration of Zn was in Sphyraena jello (0.5450 mg Kg-1) higher than other species. Also, the lowest Concentration of this element was in Scomberomorus commerson (0.0150 mg Kg-1). Concentration of Cd, Pb and Zn was lower than comparison of FAO, WHO, UKMAFF, NHMRC and FDA. Concentration of Ni was higher than comparison ofGlobal Standards. According to the results, the amount of heavy metals in muscle of fishes in the study not take any risks for human consumption.

کلیدواژه‌ها [English]

  • Heavy metals
  • Risk Assessment
  • fish
  • Muscle
  • Chabahar
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