تأثیر گردوغبار کارخانه سیمان یاسوج بر ویژگی‌های شیمیایی خاک‌های همجوار

نوع مقاله : مقاله پژوهشی

نویسنده

استادیار گروه علوم خاک دانشگاه یاسوج، یاسوج، ایران

چکیده

انتشارات اتمسفری از صنعت سیمان یکی از منابع اصلی آلودگی محیط زیست است. برای ارزیابی تأثیر گردوغبار سیمان بر برخی از ویژگی­های خاک در اطراف کارخانه سیمان یاسوج 61 نمونه خاک از کاربری­های مختلف در عمق 0-30 سانتی­متری تهیه شد. ویژگی­های مختلف خاک شامل pH، هدایت الکتریکی خاک، مواد آلی، کربنات کلسیم معادل، درصد شن، رس، سیلت و غلظت کل فلزات نیکل، منگنز، سرب و کادمیوم اندازه‌گیری شدند. به منظور بررسی نرمال بودن داده­ها از آزمون کلموگروف-اسمیرنوف استفاده شد. نتایج نشان داد خاک­های مورد مطالعه آهکی، غیرشور و قلیایی دارای 44/18 تا 54 درصد کربنات کلسیم معادل، 82/0 تا 19/2 درصد ماده آلی، 07/0 تا 96/0 دسی زیمنس بر متر هدایت الکتریکی و pH برابر 72/6 تا 02/8 بودند. مقادیر نیکل در دامنه­ی 98/214 تا 34/268 میلی­گرم بر کیلوگرم، مقادیر منگنز در دامنه­ی 45 تا 708 میلی­گرم بر کیلوگرم، مقادیر سرب در نمونه­های خاک در دامنه­ی 25/2 تا 75/168 میلی­گرم بر کیلوگرم و مقادیر کادمیوم در نمونه­های خاک در دامنه 37/0 تا 12/11 میلی­گرم بر کیلوگرم متغیر بودند. در نمونه­های بررسی شده، میانگین غلظت فلزات نیکل، منگنز، سرب و کادمیوم به­ترتیب 53/243، 46/436، 47/18 و 96/0 میلی­گرم بر کیلوگرم بود. ترتیب فراوانی میانگین غلظت فلزات سنگین به­صورت Mn >Ni >Pb >Cd بود. غلظت نیکل و کادمیوم در تمام نمونه­های خاک و غلظت منگنز و سرب در تعدادی از نمونه­های خاک کارخانه سیمان یاسوج بسیار بالاتر از استانداردهای جهانی USEPA بود. غلظت بالای این فلزات در خاک­های همجوار کارخانه در نتیجه­ فعالیت­های مختلف فرآوری مواد در فرآیند تولید سیمان و حرکت وسایل نقلیه در اطراف کارخانه سیمان است که نمایانگر تأثیر آلاینده­های منتشر شده از این کارخانه در بالا رفتن غلظت فلزات است.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Dust Effect of Yasouj Cement Factory on Chemical Properties of Surrounded Soils

نویسنده [English]

  • Mohamad Rahmanian
Assistant professor of Soil Science at Yasouj University, Yasouj , Iran
چکیده [English]

Atmospheric emissions from cement industry are one of the major sources of environmental pollution. To evaluate the effect of cement dust on some soil properties around Yasouj cement factory, 61soil samples were collected from different land uses at a depth of 0-30 cm. Different properties such as acidity (pH), electrical conductivity (EC), organic matter, calcium carbonate equivalent, sand, clay and silt percentages, total concentration of nickel, manganese, lead and cadmium were measured. The Kolmogorov-Smirnov test was used to verify the normality of the data. The results showed that the studied soils were calcareous, non-saline and alkaline and they had 18.44 to 54 percent calcium carbonate equivalent, 0.82 to 2.19 percent organic matter, 0.07 to 0.96 dS/m electrical conductivity and 6.72 to 8.02 pH. Nickel, Manganese, Lead and Cadmium concentrations ranged from 214.98 to 268.34,45 to 708, 2.25 to 168.75 and 0.37 to 11.12 mg kg-1, respectively. In the proposed samples, the mean concentration of nickel, manganese, lead and cadmium were 243.53, 436.46, 18.47 and 0.96 mg kg-1, respectively. The order of the average frequency of the heavy metals concentration was Mn> Ni> Pb> Cd. The concentration of nickel and cadmium in all soil samples and the concentration of manganese and lead in some soil samples around Yasuj cement factory were much higher than the USEPA standard levels. The high concentrations of these metals in surrounded soils are the result of different activities applied in the process of cement production and the movement of vehicles around the cement factory, illustrating the effect of pollutants released from this factory in increasing metals concentrations.

کلیدواژه‌ها [English]

  • Cement dust
  • soil properties
  • Yasouj cement factory
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