یافته‌های نوین زمین‌شناسی کاربردی

یافته‌های نوین زمین‌شناسی کاربردی

تأثیر ترافیک در تولید آئروسل ­های آلوده کننده: مطالعه موردی آلودگی شهرستان مشهد، ایران

نویسندگان
1 دانشیار گروه مهندسی نفت و زمین‌شناسی، واحد مشهد، دانشگاه آزاد اسلامی، مشهد، ایران
2 کارشناس‌ارشد، گروه مهندسی نفت و زمین‌شناسی، واحد مشهد، دانشگاه آزاد اسلامی، مشهد، ایران
چکیده
ترکیبات یا عناصر شیمیایی ناشی از فعالیت­های انسانی و غیرانسانی ممکن است به‌عنوان آلاینده هوا در جو منتشر شده و به موجودات زنده آسیب برسانند. گرد‌و‌غبار ترافیکی دارای میزان بالایی از فلزات سنگین است که می­تواند سلامت انسان و محیط­زیست را تحت تاثیر قرار دهد. مشهد به‌عنوان شهری مذهبی سالانه میزبان میلیون­ها زائر و مسافر است که نتیجه آن شلوغی و افزایش آلودگی هوا به‌ویژه در مرکز شهر و نزدیک حرم­ مطهر است. عوامل مختلفی در افزایش میزان آلاینده­های هوا و افزایش ریزگردها در شهر مؤثر هستند. با اندازه­گیری غلظت فلزات سنگین در نمونه­های مناطق شهری با حجم ترافیک بالا، میزان آلایندگی بررسی شده و منابع تولید آن­ها شناسایی شده است. آلاینده­ها و گرد‌و‌غبار از فیلترهای هوای خودروهای عمومی جمع­آوری شده و با استفاده از روش­های مختلف، شامل ICP-MS، جذب اتمی، XRD و تجزیه نقطه­ای به روش BSE مورد بررسی قرار گرفتند. نتایج حاصل نشان می­دهد که مس، نیکل، سرب و روی از آلاینده­های شاخص هوای مشهد هستند و محتمل­ترین منابع آلودگی مربوط به تردد وسایل نقلیه و کارخانه­ها و معادن اطراف شهر است.
کلیدواژه‌ها

عنوان مقاله English

The effect of traffic on the production of polluting aerosols: a case study of pollution in Mashhad, Iran

نویسندگان English

Mehdi Reza Poursoltani 1
Ahmad Parvin 2
1 Assoc. Prof., Dept. of Petroleum Engineering and Geology, Ma.C, Islamic Azad University, Mashhad, Iran
2 M.Sc. Dept. of Petroleum Engineering and Geology, Ma.C, Islamic Azad University, Mashhad, Iran
چکیده English

Chemical compounds or elements resulting from human and non-human activities may be released into the atmosphere as air pollutants and can harm living things. Traffic dust contains high levels of heavy metals that can affect human health and the environment. Mashhad, as a religious city, hosts millions of pilgrims and travelers every year, resulting in congestion and increased air pollution, especially in the city center and near the holy shrine. Various factors are effective in increasing the amount of air pollutants and increasing the city's dust. By measuring the concentration of heavy metals in samples from urban areas with high traffic volume, the level of pollution was studied and sources of production were investigated. Pollutants and dust were collected from the air filters of public vehicles and the samples were analyzed for a range of elements using methods that included ICP-MS, atomic absorption, XRD and spot analysis from BSE. The results show that copper, nickel, lead and zinc are prominent air pollutants in Mashhad, and the most likely sources of pollution are related to vehicle traffic and to factories and mines around the city.

کلیدواژه‌ها English

Air pollution
Heavy metals
Aerosol
Traffic dust
Mashhad
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  • تاریخ دریافت 04 آذر 1403
  • تاریخ بازنگری 25 اسفند 1403
  • تاریخ پذیرش 26 اسفند 1403