اثرات شیرابه زباله بر درجه آلودگی عناصر سنگین در خاکهای آهکی منطقه میاندوآب

نوع مقاله: مقاله پژوهشی

نویسندگان

1 عضو هیئت علمی دانشگاه ارومیه

2 علوم خاک، دانشکده کشاورزی، دانشگاه ارومیه، ایران

3 دانشجوی دکتری مدیریت منابع خاک دانشگاه آزاد تبریز، ایران

چکیده

امروزه آلودگی عناصر سنگین ناشی از شیرابه زباله به علت پتانسیل آن‌ها برای تأثیرگذاری بر سلامت انسان از طریق زنجیره غذایی بسیار جدی شده است. در این مطالعه تأثیر شیرابه زباله بر تجمع بعضی شاخص‌های آلایندگی عناصر سنگین خاک (Zn ،Cd ،Ni ،Pb ،Cu ،Mn ) مورد ارزیابی قرار گرفت. نتایج نشان داد که عناصر سنگین در خاک‌های تحت نفوذ شیرابه به‌طور معنی‌دار به‌صورت توالی Zn> Cd> Ni> Pb> Cu> Mn تجمع یافته‌اند. بااین‌وجود تنها مقدار کادمیوم بیشتر از مقدار استانداردهای ملی و بین‌المللی بود. بر اساس فاکتور آلودگی (CF) عناصر کادمیوم و روی در اکثر اراضی تحت نفوذ شیرابه در کلاس آلودگی شدید (3 ≤CF< 6) و سایر عناصر در کلاس آلودگی متوسط (سرب، نیکل، مس، منگنز 1 ≤CF

کلیدواژه‌ها


عنوان مقاله [English]

Effects of landfill leachate on the pollution degree of heavy metals in the calcareous soils of Miandoab region

نویسندگان [English]

  • Salar Rezapour 1
  • Ali Samadi 2
  • Fatemeh Kafei 3
1 Faculty member University Urmia
2 Department of Soil Science, Faculty of Agriculture, Urmia University, Iran
3 PH.D Student, Management of soil Resources, Tabriz Azad University, Iran
چکیده [English]

Nowadays, the heavy metal pollution caused by the landfill leachate becomes very serious because of their potential to impact on human health through the food chain. In this study, the effect of landfill leachate on the accumulation and selected indices of soil pollution to heavy metals (Zn, Cu, Cd, Pb, Ni, Mn) including contamination factor (CF), modified degree of contamination (mCd), and modified pollution index (MPI) were investigated in four different soil sites. Results indicated that soils were significantly enriched by the metals in the sequence of Zn> Cd> Ni> Cd> Cu> Mn. However, only the Cd contents exceeded the standard levels based on national and international references. Considering CF, Cd and Zn showed a high pollution class (3≤ CF< 6) in the majority of soil sites and other metals (Cu, Pb, Ni, and Mn) categorized as moderate pollution (1≤ CF< 3). Except site 1, the values of MPI were found to be moderate contamination (3<MPI <5) in the examined soils and its highest value observed in site 2.  The mean mCd content, appeared the moderate pollution class (2≤ mCd< 4), were in order of P2> P3 > P4> P1 in different soil site under the influence of leachate probably due to the quantity and quality of the leachate. Overall, the finding of the study can provide a valuable benchmark for the design of appropriate strategies and management of those agroecosystems by both local and national managers.

کلیدواژه‌ها [English]

  • "Heavy metals"
  • "Calcareous Soils"
  • "Pollution Index"
  • "Waste Leachate"
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