Evaluation of bioaerosol populations in Zanjan Zinc Industrial Park

سال انتشار: 1400
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 172

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شناسه ملی سند علمی:

MEDISM22_336

تاریخ نمایه سازی: 8 مهر 1400

چکیده مقاله:

Background and Aim : Bioaerosols (such as fungi and bacteria) are a group of biological air pollutants that environmental factors and concentration of chemical pollutants effect on their type and populations.Methods : In the present study, three-stations in the Zanjan Zinc Industrial Park are selected and air samples prepared using sampling pump (SKC-Flite ۳) for a period of ۵ min and the flow rate of ۱۴.۳ L/min. The first station at the entrance, the second near the depot site, and the third was selected adjacent to one of the major companies in the zinc industrial park. Results : The lowest and highest concentration of acid and particulate matter was determined in the ۱ and ۳ stations, respectively. Bacteria and fungi in the collected samples grown on nutrient agar and Sabaroud dextrose agar, then isolate populations determined using colony-forming units (CFU/m۳). Subsequently, the microbe types determined using microscopic examination and biochemical methods.The microbial population in the second and third stations were > ۴×۱۰۳ CFU/m۳. The highest number of bacteria in the second station was gram positive coccus. The population of gram positive bacillus was the highest at No. ۳ and No. ۱ stations. At station ۳, the variety and population of fungi species were considerably high compare to the others. The isolates of Penicillium and Aspergillus sp were dominant in the stations ۱ and ۲. Conclusion : The high level of metal particles from the waste depot presented by various microbes is a serious environmental challenge. An appropriate location for waste depot, attention to climate change, and using bioremediation technologies are essential steps to reduce environmental pollutions.

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نویسندگان

Arezoo Tavakoli

Assistant professor, Islamic Azad University- Eghlid Branch