نوع مقاله : مقاله پژوهشی

نویسندگان

1 استادیار، گروه علوم خاک، دانشکده کشاورزی، دانشگاه یاسوج، یاسوج، ایران

2 استادیار، گروه علوم خاک، دانشکده کشاورزی، دانشگاه صنعتی شاهرود، شاهرود، ایران

چکیده

صنعت سیمان می­تواند باعث ورود فلزات سنگین به محیط‌زیست شود. بر این اساس هدف از پژوهش حاضر تعیین مقدار آلودگی فلزات سنگین کادمیوم و نیکل درخاک­های اطراف کارخانه سیمان یاسوج بود. بدین منظور تعداد 61 نمونه خاک از عمق صفر تا cm 30 اطراف کارخانه به­صورت تصادفی نمونه­برداری شد. ویژگی­های مختلف خاک و غلظت کل فلزات کادمیوم و نیکل اندازه‌گیری شدند. برای بررسی نرمال­بودن داده­ها از آزمون کلموگروف-اسمیرنوف استفاده شد. در سری داده­های نرمال از روش کریجینگ و در سری داده­های غیر نرمال از روش IDW برای تهیه نقشه­های پهنه­بندی استفاده شد. بیش­ترین غلظت کادمیوم در قسمت شمالی کارخانه به مقدار mg/kg 12/11 مشاهده شد. نتایج پهنه­بندی غلظت نیکل نشان داد مقدار نیکل در مناطق نمونه­برداری شده بیش­ترین مقدار را دارا بود. مقادیر کادمیوم در 10% نمونه­های برداشت‌شده و نیکل در 100% نمونه­ها بیش­تر از مقادیر استاندارد گزارش‌شده توسط سازمان حفاظت محیط‌زیست ایران بود و این نمایانگر خطر تجمع این فلزات در خاک و آلایندگی کارخانه سیمان می­باشد. به‌طورکلی غلظت بالای این فلزات در خاک­های اطراف کارخانه سیمان نشان داد که این آلودگی در نتیجه­ فعالیت­های مختلف فرآوری مواد در فرآیند تولید سیمان و حرکت وسایل نقلیه در اطراف کارخانه سیمان است. با توجه به این نتایج، پیشنهاد می­شود که اقدامات پیشگیرانه محیط زیستی خط تولید سیمان برای کاهش انتشار آلاینده­ها انجام شود.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Mapping Cadmium and Nickel Contamination in Soils around Yasouj Cement Factory

نویسندگان [English]

  • Mohamad Rahmanian 1
  • Yaser Safari 2

1 Assist. Professor, Department of Soil Science, Faculty of Agriculture, Yasouj University, Yasouj, Iran

2 Assist. Professor, Department of Soil Science, Faculty of Agriculture, Shahrood University of Technology, Shahrood, Iran

چکیده [English]

Cement manufacturing can be an entrance source for heavy metals to the environment. Hence, the purpose of this study was to determine the amount of pollution of heavy metals, cadmium and nickel, in the lands around the Yasouj Cement Company. For this purpose, 61 soil samples from zero to 30 cm depth around the plant were randomly sampled. Some of soil properties and total concentration of Cd and Ni were measured. Kolmogorov-Smirnov test was used to examine the normality of the data. In the normal and abnormal data series, kriging and IDW methods were used to prepare zoning maps. The highest concentration of cadmium was observed in the northern part of the plant (11.12 mg/kg). The results of nickel concentration zoning showed that the amount of nickel was highest in the sampled areas. The levels of cadmium in 10% of the samples and nickel in 100% of the samples were higher than the standard values reported by the Department of Environmental of Iran, and this indicates the risk of accumulation of these metals in the soil and pollution of the cement plant. Generally, high concentrations of these metals in soils around the cement factory showed that the pollutants are as a result of the different activities such as material processing in the process of cement production and the movement of vehicles around the cement company. According to these results, it is recommended that environmental preventive measures be taken to reduce the emission of pollutants in the cement production line.

کلیدواژه‌ها [English]

  • Cement Company
  • Environmental Pollution
  • Industrial Activities
  • Zoning
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