نوع مقاله : علمی

نویسندگان

1 دانشگاه تبریز

2 گروه علوم زمین، دانشکده علوم طبیعی، دانشگاه تبریز

3 اداره کل حفاظت محیط زیست استان آذربایجان شرقی

4 شرکت زرین داغ آستارکان

چکیده

حوضه‌ی آبریز حاجیلارچای در قسمت غربی شهرستان ورزقان قرار گرفته است. قرارگیری کارخانه­ی استحصال طلای شرکت زرین داغ آستارکان در محدوده‌ی این حوضه پتانسیل آلودگی منابع آبی منطقه را افزایش می‌دهد. به‌منظور بررسی منابع آبی حوضه‌ی حاجیلارچای تعداد 12 نمونه از آب­های سطحی و زیرزمینی در اسفندماه 1399 جمع‌آوری گردید و مورد تجزیه شیمیایی قرار گرفت. نتایج تجزیه شیمیایی نشان داد غلظت برخی از عناصر همچون کبالت، سرب و آرسنیک در برخی از موقعیت‌ها بالاتر از حد مجاز برای آشامیدن است. بررسی‌ا حاکی از این است که منشأ این عناصر مرتبط با سازندهای منطقه و در اثر فرایندهای زمین‌زاد می‌باشد. هدف این تحقیق ارزیابی ویژگی‌های هیدرو شیمیایی منابع آبی با استفاده از روش­های ترسیمی و بررسی و تعیین منشأ عناصر کمیاب به کمک روش‌های آماری چندمتغیره مانند تحلیل عاملی و تحلیل خوشه­ای می­باشد. بر اساس نتایج به‌دست‌آمده از روش‌های ترسیمی، بیشتر نمونه‌های آبی منشأ آهکی داشته و تیپ غالب بی‌کربنات کلسیم را دارا می‌باشند. نتایج حاصل از تحلیل عاملی نشانگر تأثیر 4 گروه عاملی بر کیفیت منابع آبی حوضه‌ی حاجیلارچای است. عامل‌های اول، سوم و چهارم نشان‌دهنده‌ی تأثیر سازندها بر منابع آبی و فرآیندهای زمین‌زاد هستند. عامل دوم از فعالیت‌های انسانی ناشی می‌شود. همچنین تحلیل خوشه‌ای، داده‌ها را به سه دسته تقسیم کرد. داده‌های دسته‌ی اول دارای روند ژئوشیمیایی مشابه و عناصر کمیاب پایینی هستند. در دسته دوم تعادل هیدرو شیمیایی برقرار نمی‌باشد که به‌احتمال زیاد به دلیل تأثیر فعالیت‌­های کارخانه می‌باشد. در دسته‌ی سوم غلظت عنصر آرسنیک بالا است که از سازندهای منطقه منشأ گرفته است.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Investigation of hydrogeochemical and water quality of Hajilarchai basin and origin of trace elements

نویسندگان [English]

  • Fatemeh Novin Sarandi 2
  • Ghodrat Barzeghari 2
  • Mahdi Ojaghi 3
  • Nasir Nouri 4

2 Department of Earth Sciences, Faculty of Natural Sciences, University of Tabriz

3 East Azerbaijan Environmental Department

4 ZDA

چکیده [English]

Hajilar chai basin located in the western part of varzegan and it may expose to potential of water resources contamination due to placement of Zarrin Dagh Astarkan gold extraction factory in this area. In order to monitor the water sources of the Hajilar chai basin, 12 water samples collected and analyzed in March 2021. The results showed that the concentration of Co, Pb and As are higher than permissible limit of WHO standard for drinking water in some places and probably the source of trace element related to geological formations and water rock interaction. The aim of this study is to evaluate the hydrchemical characteristics and source of contamination of water sources using graphical methods, multivariate statistical techniques such as factor analysis and hierarchical cluster analysis. The result of the graphical methods showed that the most of the water samples have bicarbonate calcium dominate type. The result of the factor analysis show that four factors were affecting the quality of water source. The first, third and fourth components result from affecting of formation on water resources and water rock interaction. The second component show evidences of the anthropogenic activities in the study area. Also, hierarchical cluster analysis classifies the data into three categories. The first cluster data have similar geochemical process and less trace element. In second cluster hydrochemcial equilibrium is not established, which is probably due to the impact of factory activities. In third cluster, the concentration of arsenic is high and probably is originated from geological formation.

کلیدواژه‌ها [English]

  • hydro chemistry
  • Multivariate statistical analysis
  • Trace elements
  • Hajilar ChaiBasin
  • Northwest of Iran
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