نوع مقاله : مقاله پژوهشی

نویسنده

عضو هیات علمی/ دانشگاه تحصیلات تکمیلی صنعتی و فناوری پیشرفته کرمان

چکیده

با توجه به مسائل و مشکلات زیست‌محیطی به‌وجود آمده از فعالیت کارخانه ذوب مس خاتون‌آباد شهر بابک استان کرمان و اثرات سوء آن روی خاک منطقه، این تحقیق با هدف تعیین نحوه توزیع و الگوی مکانی پراکنش عناصر سنگین مس، روی و آرسنیک در خاک محدوده این کارخانه انجام شد. نمونه‌برداری از خاک به‌صورت شبکه‌بندی منظم (با ابعاد 1000 متر در1000 متر) از عمق ( صفر تا پنج سانتی‌متری) و آنالیزهای آزمایشگاهی با استفاده از دستگاه ICP انجام شد. به‌طوری‌که میانگین غلظت مس، روی و آرسنیک در منطقه 13/731، 06/72 و 13/40 میلی‌گرم بر کیلوگرم بود. تحلیل توزیع مکانی آلاینده‌های مورد بررسی با استفاده روش‌های زمین آماری و در محیط نرم‌افزار GS+ و GIS انجام شد. نتایج نشان داد که با توجه به بالا‌بودن نسبت (C/C0+C)‏، به میزان 99/0، 83/0 و 99/0 به‌ترتیب برای عناصر مس، روی و آرسنیک، همبستگی مکانی قوی در همه عناصر مورد بررسی با مدل واریوگرام کروی وجود دارد. در این رابطه، شعاع تأثیر به‌ترتیب برای عناصر سنگین مس، روی و آرسنیک 2480، 10830، 2380 متر (بالا بودن میزان شعاع تأثیر تأثیردر مورد عنصر آرسنیک به علت سیالیّت بالای آن در خاک می‌باشد) و مقدار آستانه نیز به‌ترتیب 94/0، 55/4 و 87/0 می‌باشد. نقشه توزیع مکانی این عناصر نیز حاکی از عدم آلودگی خاک اطراف کارخانه به عنصر روی و آلودگی شدید آن به عناصر مس و آرسنیک بود. به‌طوری‌که گستردگی مکانی آن‌ها در جهت جنوب غربی کارخانه می‌باشد.

کلیدواژه‌ها

عنوان مقاله [English]

Spatial distribution analysis of Copper, Zinc and Arsenic heavy metals in the soil of surrounding areas of Khatoon-abad copper smelter industry

نویسنده [English]

  • Sedigheh Mohamadi

scientific board/ Graduate University of Advanced Technology

چکیده [English]

According to harmful environmental effects of Khatoon-abad copper smelter industry activities on soil quality; this research was conducted to determine the spatial distribution pattern of Zn, Cu and As heavy metals of soil in the surrounding areas of this industry company. Soil sampling was designed in a systematic network plan from 0-5 cm horizon, and laboratory analysis was carried out by ICP. Mean of Zn, Cu and As metals concentrations was obtained 731.13, 72.06, and 40.13 (mg/kg), respectively. Statistical and geostatistical analysis was conducted by Gs+ and GIS softwares. The results showed that there exist strong spatial correlations with spherical variography model for all of heavy metals due to high amount of (C/C0+C) ratio that equal 0.99, 0.83, and 0.99, respectively for Cu, Zn, and As heavy metals. Regarding to mobility of studied heavy metals in soil, the effective ranges equal to 2480, 2380 and 1083 (meter) and the Sill content equal 0.94, 4.55 and 0.87 (%) were obtained for Cu, Zn, and As respectively. Furthermore, the zonation map of contaminants illustrated that the amount of Zn pollution problem is not remarkable and there is a sever contamination of Cu and As with the spatial extending direction of the southwest of Khatoon-abad industry.

کلیدواژه‌ها [English]

  • Geostatistics
  • Geographic Information System
  • Effective range
  • Spherical variogram
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