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نوع مقاله : مقالات پژوهشى اصیل کمی و کیفی

نویسندگان

1 استادیار / دانشگاه آزاد اسلامی ، واحد علوم و تحقیقات

2 کارشناس ارشد، مهندسی محیط زیست - گرایش آلودگی هوا، گروه مهندسی محیط زیست، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران

3 استاد، گروه مهندسی محیط زیست، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران

چکیده

زمینه و هدف: توسعه صنعتی از یک‌سو با ایجاد محصولات شیمیایی مضر و ضایعات صنعتی، شامل فلزات سنگین و از سوی دیگر با افزایش مصرف انرژی و به‌تبع آن انتشار گازهای آلاینده جوی، باعث آلودگی محیط زیست می‌شود. شهر بندرعباس از نظر توزیع جغرافیایی صنایع، در مقایسه با دیگر نقاط شهری و روستایی استان، از تمرکز صنعتی بالایی برخوردار است. از این‌رو لزوم بررسی آلودگی­ هوای ناشی از این صنایع و تأثیرات مخرب آن­ها بر محیط زیست منطقه ضروری است، لذا مطالعه حاضر - با هدف بررسی میزان فلزات سنگین ناشی از فعالیت صنایع انجام شد.
مواد و روش­ها: عملیات نمونه­برداری از هوای محیط در 7 مکان از منطقه در دو فصل زمستان و بهار (1398-99) انجام گرفت. روش نمونه‌برداری و آماده­سازی جهت قرائت بر اساس استانداردهای آژانس حفاظت از محیط زیست و مؤسسه ملی ایمنی و سلامت شغلی بود. نمونه‌برداری با استفاده از پمپ با مکش حجم بالا (High – Volume) با دبی 7/1 متر مکعب در دقیقه و مدت زمان 24 ساعت، در ارتفاع 3 متری از سطح زمین انجام گرفت و فلزات سنگین نمونه­های برداشت شده با استفاده از دستگاه جذب اتمی Varian مدل  Z220با تکنیک کوره اندازه‌گیری شد. در این تحقیق از فیلترهای فایبر گلاس دایره‌ای شکل با قطر 47 میلی‌متر برای نمونه‌برداری از محیط باز استفاده شد.
یافته ­ها: بر اساس نتایج حاصل از آنالیز ذرات موجود در هوا، غلظت فلزات سنگین به­ترتیب روند کاهشی شامل V نتیجه ­گیری: میزان ذرات معلق در تمامی مکان­های نمونه­برداری بالاتر از استانداردهای زیست‌محیطی بود. همچنین به استثناء وانادیوم، غلظت همه عناصر در نمونه­های مناطق مسکونی پایین­تر از حدود مجاز بود.

کلیدواژه‌ها

عنوان مقاله [English]

Investigation of the Heavy metals concentration in the air of west Bandar Abbas industrial zone

نویسندگان [English]

  • Alireza Mirzahosseini 1
  • Fatemeh Ebrahimi 2
  • Nabiollah Mansouri 3

1 Assistant Professor/ Science and Research Branch. Islamic Azad university

2 Master of Air Pollution. Department of environmental engineering. Science and Research Branch. Islamic Azad university. Tehran. Iran

3 Professor. Department of environmental engineering. Science and Research Branch. Islamic Azad university. Tehran Iran.

چکیده [English]

Background and purpose: Industrial development, on one hand, creates harmful chemical products and industrial waste, including heavy metals. On the other hand, it increases energy consumption and leads to the release of atmospheric pollutants, causing environmental pollution. Bandar Abbas, compared to other areas of Hormozgan province, has a high concentration of industries. Therefore, it is necessary to study the pollution caused by these industries in the region's environment. The general purpose of this study is to investigate the amount of heavy metals associated with industrial activity.
Materials and Methods: Ambient air sampling was conducted at seven locations in the region during winter and spring (2020). The sampling and preparation methods were based on EPA and NIOSH Standards. Sampling was performed using a High-Volume pump with a flow rate of 1.7 cubic meters per minute for a duration of 24 hours. The sampling device was installed at a height of 3 meters above the ground. The heavy metals in the collected samples were measured using the Varian Z220 atomic absorption spectrometer with the furnace technique. Circular fiberglass filters with a diameter of 47 mm were used for environmental sampling.
Results: Based on the analysis of air particles, the concentration of heavy metals showed a decreasing trend as follows: V < Cd < Fe < Pb. The average concentrations of these elements were 0.0006, 0.0060, 0.0061, and 0.339 micrograms per cubic meter, respectively. With the exception of lead, the average concentration of these metals exceeded the limit value.
Conclusion: The amount of suspended particles at all sampling locations exceeded the environmental standards. Additionally, except for vanadium, the average concentration of metals in the samples from residential areas was below the limit value.

کلیدواژه‌ها [English]

  • Lead
  • Western Industries
  • Bandar Abbas
  • Air Pollution
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