Particulate matters and bioaerosols during Middle East dust storms events in Ilam, Iran

Amarloei, Ali; Fazlzadeh, Mehdi; Jafari, Ahmad Jonidi; Zarei, Ahmad; Mazloomi, Sajad

doi:10.1016/j.microc.2019.104280

Cited by 61 publications

(27 citation statements)

References 35 publications

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“…The indoor CO 2 concentration was also monitored using a portable Aeroqual series 500 (New Zealand). An aerosol spectrometer (Grimm Aerosol Technik GmbH, Germany) was used to monitor particulate matter in the indoor air samples at each sampling locations ( Amarloei et al, 2020 ; Harbizadeh et al, 2019 ). The aerosol spectrometer was monitored at various size fractions between 0.25 and 32 μm during 3 min in each sampling location and we extracted the PM 1 , PM 2.5 , PM 10 and inhalable particle concentrations.…”

Section: Methodsmentioning

confidence: 99%

Hospital indoor air quality monitoring for the detection of SARS-CoV-2 (COVID-19) virus

Kenarkoohi

Noorimotlagh

Falahi

et al. 2020

Science of The Total Environment

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140

128

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On December 31, 2019, the novel human coronavirus (COVID-19) was identified in Wuhan, China and swiftly spread in all nations and territories around the globe. There is much debate about the major route of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) transmissions. So, more evidence is required to determine the potential pathway of transmission of SARS-CoV-2 including airborne transmission. Therefore, we examined the potential aerosol transmission of the virus through hospital wards indoor air by confirmed COVID-19 patients on May 7, 2020. In order to capture airborne SARS-CoV-2, the liquid impinger biosampler was used to take fourteen air samples in different wards of the indoor air of the hospital. The specific primer and probe real-time reverse transcriptase-polymerase chain reaction (RT-PCR) were applied to detect viral genomes of the SARS-CoV-2 virus in positive air samples. Accordingly, we found two positive air samples (in the ICU) out of 14 ones taken from different wards with confirmed COVID-19 patients. The results revealed the possibility of airborne transmission of SARS-CoV-2 though more studies are required to determine the role of actual mechanisms such as cough, sneeze, normal breathing and speaking in the emission of airborne size carrier aerosols. Likewise, more quantitative analyses are needed to estimate airborne viability of SARS-CoV-2 in the carrier aerosols.

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Section: Methodsmentioning

confidence: 99%

Hospital indoor air quality monitoring for the detection of SARS-CoV-2 (COVID-19) virus

Kenarkoohi

Noorimotlagh

Falahi

et al. 2020

Science of The Total Environment

Self Cite

140

128

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“…The Eastern Mediterranean region also suffers from SDS episodes, which have been reported more frequently during the past decades (Hamidi et al, 2013;Keramat et al, 2011;Kutiel et al, 2003;Hussein et al, 2011Hussein et al, , 2014Hussein et al, , 2017Hussein et al, , and 2018Kchih et al, 2015;Munir et al, 2017;Amarloei et al, 2019;Abdulwahed et al, 2019;Saeifar et al, 2019;Fountoukis et al, 2020). The increased frequency of SDS episodes in the Eastern Mediterranean region has been referred to the impact of climate change and its consequences by desertification, deforestation, wetland destruction, increased population growth and anthropogenic emissions, food insecurity, and water…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Particulate Matter Concentrations in a Middle Eastern City – An Insight to Sand and Dust Storm Episodes

Hussein

Al-Dulaimi

et al. 2020

Aerosol Air Qual. Res.

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In this study, the particulate matter mass (PM10 and PM2.5) concentrations we measured during May 2018-March 2019 in an urban atmosphere of Amman, Jordan. The results showed that the annual mean PM10 concentration was 64±39 µgm-3 and the PM2.5/PM10 ratio was 0.8±0.2. According to the Jordanian Air Quality standards (JS-1140/2006), the observed PM10 annual mean value was below the limit value but that of the PM2.5 was three times higher than the corresponding limit value. However, both exceeded the World Health Organization (WHO) air quality guideline values. In a larger perspective, the annual mean PM10 concentrations in Jordan were lower than what was reported in other cities in the Middle East but were higher when compared to other Mediterranean cities. During the measurement period, Jordan was affected by Sand and Dust Storm (SDS) episodes on 14 days. The source origins of these dust outbreaks were traced back to North Africa, the Arabian Peninsula, and the Levant. The 24-hour PM10 concentrations during these SDS episodes ranged between 108 and 188 µgm-3 , which was about 3-6 times higher than the mean values during clean conditions (~33 µgm-3).

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“…This factor also had some mass contributions from SO 2 4 , NO − 3 , and EC, further confirming that it was from coal burning. Factor 5 was explained as fugitive dust due to its high EV values of Si and Ca, which came from the earth's crust and building dust, respectively (Amil et al, 2016). The integrated system does not involve the measurement of oxygen (O) and Al.…”

Section: Source Apportionment Resultsmentioning

confidence: 99%

Development and application of a mass closure PM<sub>2.5</sub> composition online monitoring system

Peng

Huang

et al. 2020

Atmos. Meas. Tech.

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Abstract. Online instruments have been widely applied for the measurement of PM2.5 and its chemical components; however, these instruments have a major shortcoming in terms of the lack or limited number of species in field measurements. To this end, a new mass closure PM2.5 online integrated system was developed and applied in this work to develop more comprehensive information on chemical species in PM2.5. For the new system, one isokinetic sampling system for PM2.5 was coupled with an aerosol chemical speciation monitor (Aerodyne, ACSM), an aethalometer (Magee, AE-31), an automated multi-metals monitor (Cooper Corporation, Xact-625) and a hybrid synchronized ambient particulate real-time analyzer monitor (Thermo Scientific, SHARP-5030i) to enable high-resolution temporal (1 h) measurements of organic matter, SO42-, NO3-, Cl−, NH4+, black carbon, important elements and PM2.5 mass concentrations. The new online integrated system was first deployed in Shenzhen, China, to measure the PM2.5 composition from 25 September to 30 October 2019. Our results showed that the average PM2.5 concentration in this work was 33 µg m−3, and the measured species reconstructed the PM2.5 well and almost formed a mass closure (94 %). The multi-linear engine (ME-2) model was employed for the comprehensive online PM2.5 chemical dataset to apportion the sources with predetermined constraints, in which the organic ion fragment m/z 44 in ACSM data was used as the tracer for secondary organic aerosol (SOA). Nine sources were determined and obtained reasonable time series and diurnal variations in this study, including identified SOA (23 %), secondary sulfate (22 %), vehicle emissions (18 %), biomass burning (11 %), coal burning (8.0 %), secondary nitrate (5.3 %), fugitive dust (3.8 %), ship emissions (3.7 %) and industrial emissions (2.1 %). The potential source contribution function (PSCF) analysis indicated that the major source area could be the region north of the sampling site. This is the first system in the world that can perform online measurements of PM2.5 components with a mass closure, thus providing a new powerful tool for PM2.5 long-term daily measurement and source apportionment.

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Particulate matters and bioaerosols during Middle East dust storms events in Ilam, Iran

Cited by 61 publications

References 35 publications

Hospital indoor air quality monitoring for the detection of SARS-CoV-2 (COVID-19) virus

Hospital indoor air quality monitoring for the detection of SARS-CoV-2 (COVID-19) virus

Particulate Matter Concentrations in a Middle Eastern City – An Insight to Sand and Dust Storm Episodes

Development and application of a mass closure PM<sub>2.5</sub> composition online monitoring system

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Particulate matters and bioaerosols during Middle East dust storms events in Ilam, Iran

Cited by 61 publications

References 35 publications

Hospital indoor air quality monitoring for the detection of SARS-CoV-2 (COVID-19) virus

Hospital indoor air quality monitoring for the detection of SARS-CoV-2 (COVID-19) virus

Particulate Matter Concentrations in a Middle Eastern City – An Insight to Sand and Dust Storm Episodes

Development and application of a mass closure PM&lt;sub&gt;2.5&lt;/sub&gt; composition online monitoring system

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Development and application of a mass closure PM<sub>2.5</sub> composition online monitoring system