How different source regions across the Middle East change aerosol and dust particle characteristics

  • سال انتشار: 1397
  • محل انتشار: دومین همایش بین المللی گرد و غبار
  • کد COI اختصاصی: TICD02_170
  • زبان مقاله: انگلیسی
  • تعداد مشاهده: 470
دانلود فایل این مقاله

نویسندگان

Hesam Ahmady-Birgani

Faculty of Natural resources, Urmia University, Urmia, Iran

چکیده

It is generally assumed that severe dust events in western Iran could be responsible for elevated levels of toxic and radioactive elements in the region. Over a period of sampling, dust particles in the size range PM10 (i.e. < 10 micrometers) were collected from the western Iran. The aim of research was to compare chemical compositions of dust and aerosol samples collected during the dust events from the different regions. Results of ICP-MS analysis of components indicated that during dust events the concentrations of major elements such as Ca, Mg, Al and K increased. Toxic trace elements that are generally ascribed to human activities, including industrial and urban pollution, are thus proportionately more abundant in the dust under calm conditions than during dust events. The variability of chemical species during the dust events, noted by tracking the dust plumes in satellite images, was also assessed and the results related to the different source areas, namely the dry lands of north-western Iraq and the desert areas of south-eastern Syria, some parts of Kuwait and KSA countries (around the Persian Gulf). Generally, the results show, different source regions across the Middle East have individual chemical compositions with different abundances.

کلیدواژه ها

Dust-prone regions, Dust particles, Source fingerprinting, Middle East

مقالات مرتبط جدید

اطلاعات بیشتر در مورد COI

COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.

کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.