بررسی آلودگی آب، خاک و گندم منطقه بیجار به آرسنیک

نوع مقاله : Original Articles

نویسندگان

1 استادیارگروه زیستشناسی، دانشکده علوم، دانشگاه رازی، کرمانشاه

2 دانش آموخته کارشناسی ارشدفیزیولوژی گیاهی، دانشکده علوم، دانشگاه رازی، کرمانشاه

3 دانشیارگروه زیست شناسی، دانشکده علوم، دانشگاه رازی، کرمانشاه

چکیده

آرسنیک یک آلاینده محیطی است و می‌توان از طریق آب و خاک آلوده به گیاهان منتقل شود. بر این اساس گیاهان (به‌ویژه غلات) یکی از راه‌های ورود آرسنیک به زنجیره‌غذایی انسان محسوب می‌شوند. در این مطالعه انتقال آرسنیک به محصولات کشاورزی و ریسک انتقال آن به انسان در آب‌های سطحی، خاک و گندم ناحیه آلوده به آرسنیک بیجار مورد بررسی قرار گرفت. غلظت آرسنیک آب 52/0 تا 64/484 میکرو­گرم بر لیتر و غلظت آرسنیک خاک 2/138 تا 2/1775 میلی‌گرم بر کیلو­گرم بود. هم‌چنین برخی از متغیرهای فیزیکی و شیمیایی آب و خاک که بر روی آلودگی آرسنیک مؤثر است اندازه‌گیری شدند. غلظت آرسنیک بخش هوایی نمونه‌های گندم 79/1 تا 58/30 و غلظت آرسنیک دانه‌های گندم 003/0 تا 08/0 میلی‌گرم بر کیلوگرم بود. بر پایه این نتایج، غلظت آرسنیک در آب و خاک رابطه معنی‌داری را نشان داد اما همبستگی غلظت آرسنیک خاک با مقدار تجمع آن در گندم معنی­دار نبود. 

کلیدواژه‌ها

عنوان مقاله [English]

Contamination Study of Water, Soil and Wheat to Arsenic of the Bijar Region

نویسندگان [English]

  • Naser Karimi, 1
  • Mohammad Pormehr 2
  • Hamaid Reza Ghasempour 3
1 Assistant professor, Department of Biology, Faculty of Sciences, University of Razi, Kermanshah
2 MSc. of Plant Physiology, Faculty of Sciences, University of Razi, Kermanshah
3 Associate professor, Department of Biology, Faculty of Sciences, University of Razi, Kermanshah
چکیده [English]

Arsenic is a naturally occurring element which pose a potential risk to groundwater quality, as well as food safety through As transportation in soil-water-plant systems. Therefore, plants such as cereal are the main way of As transportation to the food chain. In this study, to evaluate the arsenic transfer rate in agricultural products and the risk of its poisoning, surface water, soil and wheat samples were collected from the Bijar County, which has a history of naturally occurring arsenic pollution. The As concentration of surface water and soil samples are in ranged of 0.52-484.64 μg/L and 138.2 to 1775.2 mg/kg respectively. Also some physico-chemical parameters of water and soil which had direct effects on As pollution were estimated. The As concentration of wheat shoot samples were between 1.79-30.58 mg/kg and As concentration of wheat seed samples were 0.003-0.08 mg/kg. Based on these results, arsenic levels in waters and soils were significantly correlated, but arsenic accumulation in wheat samples were not correlated significantly with soil arsenic concentration.

کلیدواژه‌ها [English]

  • Keywords: Arsenic
  • Chemical parameters
  • Environmental pollutants
  • Food chain
  • Physical parameters
  • Wheat

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