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مژده داودی فرد گیتی فرقانی تهرانی هادی قربانی حبیب الله قاسمی

چکیده

در این پژوهش، غلظت، تحرک و دسترس‌پذیری عناصر بالقوه سمی در باطله‌های فراوری و همچنین منشأ آنها در خاک‌های اطراف معدن سرب‌- روی ایرانکوه ارزیابی‌شده است. نتایج حاصل از تحلیل واریانس نشان می‌دهد که تفاوت آماری شاخصی بین غلظت عناصر در خاک­های معدنی و کشاورزی وجود دارد. آنالیز خوشه‌ای نیز نشان‌دهنده تأثیر معدن‌کاری بر افزایش غلظت PTEs در خاک است. بر اساس نتایج تحلیل مؤلفه اصلی، عناصر دارای سه منشأ است: 1- عناصر پایدار زمین‌زاد؛ 2- عناصر انسان‌زادی که نشان‌دهنده ژئوشیمیایی کانه‌زایی سرب و روی هستند و 3- محصولات هوازدگی واحدهای کربناتی. آنالیز عنصری باطله‌های فراوری، نشان­دهنده غنی‌شدگی شدید باطله‌ها نسبت به آرسنیک،‌ کادمیم، آنتیموان، روی و سرب است. نتایج آنالیز استخراج ترتیبی نشان می‌دهند که درصد نسبتاً بالایی از مس، منگنز، کادمیم و آرسنیک (به‌ترتیب 9/24، 3/20، 6/18 و 2/15 درصد) به شکل تبادل‌پذیر حضور دارد. بنابراین، فرسایش باطله‌های فراوری می‌تواند زیست‌دسترس‌پذیری این عناصر را در خاک کشاورزی و آب‌های زیرزمینی اطراف محدوده معدنی افزایش دهد.

جزئیات مقاله

کلمات کلیدی

عناصر بالقوه سمی, خاک, آلودگی, معدن ایرانکوه, اصفهان

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ارجاع به مقاله
داودی فرد م., فرقانی تهرانی گ., قربانی ه., & قاسمی ح. ا. (2019). بررسی توزیع عناصر بالقوه سمّی در باطله‌ های فراوری، خاک های معدنی و کشاورزی محدوده معدنی سرب- روی ایرانکوه، جنوب‌ غرب اصفهان. زمین‌شناسی اقتصادی, 10(2), 537-559. https://doi.org/10.22067/econg.v10i2.62158
نوع مقاله
علمی- پژوهشی