بررسی غلظت عناصر سنگین در خاک و گیاهان اطراف مجتمع فولاد خوزستان

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشگاه کشاورزی و منابع طبیعی رامین خوزستان، دانشکده کشاورزی، گروه علوم و مهندسی خاک

2 عضو هیئت علمی دانشگاه علوم کشاورزی و منابع طبیعی خوزستان، اهواز، ایران

3 هیات علمی گروه محیط زیست دانشکده منابع طبیعی دانشگاه صنعتی اصفهان، اصفهان، ایران

چکیده

هدف از این پژوهش، بررسی غلظت فلزات سنگین منتشر شده از مجتمع فولاد خوزستان، در خاک و گیاهان اطراف این منطقه می­باشد. بدین منظور نمونه­برداری از برگ درختان، درختچه­ها و گیاه علفی و خاک محیط ریشه (ریزوسفر) آن‌ها در جهت وزش باد غالب منطقه و عمود برآن در اطراف مجتمع فولاد انجام شد. نمونه‎های گیاه به دو دسته تقسیم و نیمی با آب مقطر و اسید هیدروکلریک شسته و نیمی دیگر بدون شستشو در نظر گرفته‏ شدند. غلظت عناصر سنگین: آهن، مس، کادمیم، سرب و روی در خاک و نمونه­های گیاهی با استفاده از دستگاه جذب اتمی اندازه‏گیری شد. نتایج نشان داد که در جهت وزش باد غالب، میزان غلظت عناصر سنگین در برگ گیاهان حدود 5/1 برابر غلظت عناصر در برگ گیاهان عمود بر جهت وزش باد بود. همچنین غلظت فلزات سنگین در نمونه­های گیاهی شسته شده کمتر از نمونه­های بدون شستشو بود که بیانگر نشست فلزات سنگین بر روی گیاهان از طریق ذرات معلق هوا است. با توجه به یافته­های این پژوهش می­توان نتیجه گرفت که مجتمع فولاد خوزستان به ­عنوان یکی از منابع انتشار فلزات سنگین در منطقه است که انتشار آلاینده­های مذکور از طریق باد محیط­زیست شهر اهواز را تهدید می­کند.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Assessing Heavy Metal Concentration in the Soil and Plants of Surroundings Khuzestan Steel Factory

نویسندگان [English]

  • AGHIL EKHLASPOUR 1
  • bijan khalili moghadam 2
  • mohsen soleimani 3
1 Department of Soil Science, Ramin Agriculture and Natural Resources university of Khuzestan, Ahvaz, Iran.
2 Associate Prof., Department of Soil Science, Agricultural Sciences and Natural Resources university of Khuzestan, Ahvaz, Iran
3 Assistant Professor, Group of Environment, Department of Natural Resources, Isfahan University of Technology, Isfahan, Iran
چکیده [English]

The objective of this study was to investigate the  concentration of heavy metals, dispersed from Khuzestan Steel factory, in the soil and various plants  of surrounding area. For this purpose, the Leaves samples from trees, shrubs, grass and soil samples from their rhizospheres were collected in dominated and opposite wind direction from the factory. Plant samples were divided into two groups; of which one group was washed with distilled water and HCl and another was not washed. Heavy metal concentrations (Fe, Cu, Cd, Pb, Zn) were measured in plant and soil samplesby flame atomic absorption spectroscopy. Results showed that the heavy metals concentration in plants in wind direction is almost 1.5 times more than the opposite direction. Airborne metal deposition has occurred in this region because the heavy metal concentrations in unwashed samples were more than the ones in washed samples. Based on the results obtained from this study, it can be concluded that Khuzestan steel factory activity is one of the pollution  sources in the proposed region which threated the environment of Ahvaz.

کلیدواژه‌ها [English]

  • Pollution
  • urban environment
  • Steel Industries
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