Mercury Pollution from Small – Gold Mining in the Waste of Al Salam Gold Mine, Northern Sudan

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ID: 310805
2020
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Abstract
This study aimed to assess the trace of mercury in the tailings of Al Salam Mine in Al Abiydia city, Sudan. Sixteen soil samples were collected from mine waste and studied using Direct Mercury Analyzer-80 (DMA-80). The analyzed results showed that the total concentration of Hg in soil samples ranged from 2.144 to 47.635 mg.kg-1, with a mean of 19.696 mg. kg-1. These values exceeded the background values according to international standards such as (IAEA, 0.04 mg.kg-1; VIRM, 4.8 mg.kg-1; ASTRD, 0.063 mg.kg-1). Also, the pollution and toxicity degree were assessed using the Contamination Factor (CF), potential ecological risk(Er) and risk index degree (RI). The results showed that, the Contamination Factor (CF) is ranged from 492.4 to 1190.88, with the average value of 53.6 which indicated a very high contamination (CF>6). While the Risk Index (RI) was found above 600 which indicated high toxicity, these results of high level of mercury pollution can cause an environmental hazard to the surrounding area due to the possibility of mercury seepage to the Nile River with rains and wind. هدف البحث لتحديد أثر الزئبق في مخلفات منجم السلام في مدينة العبيدية، السودان. 16 عينة جُمعت من مخلفات المنجم ، تم تحديد الاثر باستخدام تقنية Direct Mercury Analyzer-80 (DMA-80). . نتائج التحليل اظهرت  ان تركيز الزئبق في عينات التربة تدرج من (2.144 to  47.635 mg.kg-1)  بمتوسط ( 19.696 mg. kg-1). هذه القيم تجاوزت القيم المرجعية العالمية كــ .(IAEA, 0.04 mg.kg-1; VIRM, 4.8 mg.kg-1; ASTRD, 0.063 mg.kg-1) ايضاّ التلوث ودرجة السمية حُددت باستخدام معامل التلوث    Contamination Factor (CF) وامكانية الخطر البيئي potential ecological risk(Er)   و درجة مؤشر الخطر (risk index degree (RI)). النتائج بينت ان معامل التلوث (CF) تراوح من ( (492.4 to 1190.88 بقيمة متوسطة  53.6 التي اشارة الى تلوث عالي (CF>6) . بينما مؤشر الخطر (RI)  وُجد اعلى من 600 وأشار الى السمية العالية، هذه النتائج لمستوى تلوث الزئبق المرتفع من الممكن ان ينتج عنه ضرر للمنطقة المحيطة نتيجة الى امكانية تسرب الزئبق الى نهر النيل بسبب الامطار والرياح .
Reference Key
gobran2020mercurypollutionfrom Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Gobran N. Ali; Siddig T. Kafi; Hago A; Abdullah T. Naji
Journal Albaydha University Journal
Year 2020
DOI
10.56807/buj.v2i2.54
URL
https://baydaauniv.net/buj/index.php/buj/article/download/54/48
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