بررسی تجمع زیستی فلزات سنگین مس، کادمیم و آرسنیک در رسوب و آبزیان سد خداآفرین

نوع مقاله : مقاله کامل

نویسندگان

1 دانشجوی کارشناسی ارشد، گروه محیط زیست، دانشکده منابع طبیعی دانشگاه تهران

2 استادیار، گروه محیط زیست، دانشکده منابع طبیعی دانشگاه تهران

3 دانشیار، گروه شیلات، دانشکده منابع طبیعی دانشگاه تهران

چکیده

ورود فلزات سنگین به محیط زیست به ویژه اکوسیستم‌های آبی به دلیل ورود به زنجیره غذایی و به خطر افتادن سلامت انسان، یکی از نگرانی-های جامعه امروزی می‌باشد. غلظت فلزات آرسنیک، کادمیم و مس در رسوب، نی و ماهی‌ زردپر، سیاه‌ماهی، کپور و سیم نمونه‌گیری شده از سد خداآفرین، با استفاده از روش هضم اسیدی خشک و دستگاه ICP-OES اندازه‌گیری شد. نتایج آزمون ANOVA نشان‌دهنده وجود اختلاف معنی دار غلظت فلزات در بین نمونه‌ها بود (001/0 > p). رابطه رگرسیونی بین فلزات معنی‌دار بود (001/0 > p) اما بین غلظت فلزات در رسوب و غلظت آن‌ها در ماهی و نی همبستگی معنی‌دار نشد (05/0 <p). غلظت فلزات آرسنیک و کادمیم در رسوب و بافت عضله بیش از حد استانداردهای جهانی FAO و EPA است، همچنین گیاه نی در این منطقه مقدار قابل ملاحظه‌ای از هر سه فلز را در خود تجمع داده است.

کلیدواژه‌ها


عنوان مقاله [English]

Investigation of heavy metals accumulation in sediment and aquatic organism in Khodaafarin Dam, Azarbaijan-Sharghi, Iran.

نویسندگان [English]

  • M., Zareh Reshquoeeieh, 1
  • A. H., Hamidian, 2
  • H., Poorbagher, 3
  • S., Ashrafi, 2
1 M.Sc. Student, Department of Environment, Faculty of Natural Resources, University of Tehran, Karaj, Iran.
2 Assistant Professor, Department of Environment, Faculty of Natural Resources, University of Tehran, Karaj, Iran.
3 Associate Professor, Department of Fisheries, Faculty of Natural Resources, University of Tehran, Karaj, Iran.
چکیده [English]

Heavy metals occur in the environment special aquatic ecosystems. They may be enter in food chain and can affect human and animals health. In this study concentrations of heavy metlas, such as Cd, As and Cu were determined in sediment, common reed (Phragmites australis) and the muscle fish (Abramis bram, Varicorhinus dapoeta, Capoeta capoet, Cyprinus carpio) using drying ash method and inductively coupled plasma-optical emission spectrometer (ICP-OES) instrument. ANOVA analysis showed significant difference between metal concentrations between samples (P< 0.001). Linear regression of metal concentrations was significant (P< 0.001) and no correlation observed between metal concentrations in sediment, common reed and fish (P> 0.05). Concentrations of As and Cd in sediment and fish is above of standard guideline (EPA and FAO). Common reed accumulated execs of heavy metals.

کلیدواژه‌ها [English]

  • heavy metals
  • Bioaccumulation
  • Fish
  • common reed
  • Khodaafarin dam
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