Study of Physicsl-Chemical Characteristics and Concentration of Aerosols Derived from Cascade Impactor (Case of Dust storm in Yazd Area)

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Ebrahimi Sanaz; Joghataei Mohammad; Memarian Mohammad Hossein; Azimzadeh Hamid Reza

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Journal: Journal of the Earth and Space Physics Year:2024 | Volume:50 | Issue:3 Page(s): 763-772

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Information Journal Paper

Title

Study of Physicsl-Chemical Characteristics and Concentration of Aerosols Derived from Cascade Impactor (Case of Dust storm in Yazd Area)

Author(s)

Ebrahimi Sanaz | Joghataei Mohammad | Memarian Mohammad Hossein | Azimzadeh Hamid Reza | Issue Writer Certificate

Keywords

Dust Storm

HYSPLIT

Cascade Impactor

Abstract

Due to the lack of laboratory studies in the field of detection of aerosols and dust in Iran and in Yazd, in this study, using laboratory methods such as EF="/search/paper/Cascade Impactor/fa?page=1&sort=1&ftyp=all&fgrp=all&fyrs=all" target="_blank">Cascade Impactor, a vacuum pump for sampling aerosols, Rotameter and other laboratory materials in the field samples have been analyzed for characteristics of dust particles such as EF="/search/paper/PM/fa?page=1&sort=1&ftyp=all&fgrp=all&fyrs=all" target="_blank">PM10 and EF="/search/paper/PM/fa?page=1&sort=1&ftyp=all&fgrp=all&fyrs=all" target="_blank">PM2.5 particles, and then the particle concentration has been obtained by weighing the specimens. Qualitative and quantitative studies of aerosols existing inside the EF="/search/paper/Dust Storm/fa?page=1&sort=1&ftyp=all&fgrp=all&fyrs=all" target="_blank">Dust Storms is an EFfective procedure to identify their environmental EFfects and source detection. Increasing the frequency of these phenomena in desert areas with hot and dry climates, such as Yazd province, is another aspect of climate change, in that dry climates that are getting drier. On the other hand, increasing temperature due to global warming result in the extension of deserts. The main purpose of this study is identification and comparison of some the physical and chemical characteristics of aerosols existing inside EF="/search/paper/Dust Storm/fa?page=1&sort=1&ftyp=all&fgrp=all&fyrs=all" target="_blank">Dust Storms with model results. For this purpose, we used 7-stage EF="/search/paper/Cascade Impactor/fa?page=1&sort=1&ftyp=all&fgrp=all&fyrs=all" target="_blank">Cascade Impactor, with specific sampling rate and laboratory methods, aligned with EF="/search/paper/PM/fa?page=1&sort=1&ftyp=all&fgrp=all&fyrs=all" target="_blank">PM2.5 and EF="/search/paper/PM/fa?page=1&sort=1&ftyp=all&fgrp=all&fyrs=all" target="_blank">PM10 data.
In this study, four days of storms (3 and 23 May, 29 August and 29 September 2018) were examined. At first, with the use of 7-stage EF="/search/paper/Cascade Impactor/fa?page=1&sort=1&ftyp=all&fgrp=all&fyrs=all" target="_blank">Cascade Impactor, aerosols of EF="/search/paper/Dust Storm/fa?page=1&sort=1&ftyp=all&fgrp=all&fyrs=all" target="_blank">Dust Storm in the range of 0.4-10 µm are collected in different stages and their values were compared with EF="/search/paper/PM/fa?page=1&sort=1&ftyp=all&fgrp=all&fyrs=all" target="_blank">PM10 and EF="/search/paper/PM/fa?page=1&sort=1&ftyp=all&fgrp=all&fyrs=all" target="_blank">PM2.5 concentrations of particles with the reported values of environmental and meteorological organizations of Yazd city. EF="/search/paper/Cascade Impactor/fa?page=1&sort=1&ftyp=all&fgrp=all&fyrs=all" target="_blank">Cascade Impactor works with a specific pump in that the sampling inflow of air is 28.4 L/min in that the inflow was adjusted with a mechanical rotameter. The weight of filters was measured bEFore and after the sampling. These filters were placed in the desiccator in order to eliminate the humidity from them. The results showed the compatibility of 24-hour accumulation of hourly data with EF="/search/paper/Cascade Impactor/fa?page=1&sort=1&ftyp=all&fgrp=all&fyrs=all" target="_blank">Cascade Impactor results. Then, with using atomic absorption spectrometry device, the values of heavy metals such as Pb, Al, Cd in the samples related to the storms of 29 August and 29 September were examined. In the August 29 test, the lead element was in the low enrichment range (EF <3), and the cadmium element in most filters was in the high enrichment range (10

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