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Article ; Online: Air filtration and SARS-CoV-2.

Nazarenko, Yevgen

2020 Volume 42, Page(s) e2020049

Abstract: Air filtration in various implementations has become a critical intervention in managing the spread of coronavirus disease 2019 (COVID-19). However, the proper deployment of air filtration has been hampered by an insufficient understanding of its ... ...

Abstract	Air filtration in various implementations has become a critical intervention in managing the spread of coronavirus disease 2019 (COVID-19). However, the proper deployment of air filtration has been hampered by an insufficient understanding of its principles. These misconceptions have led to uncertainty about the effectiveness of air filtration at arresting potentially infectious aerosol particles. A correct understanding of how air filtration works is critical for further decision-making regarding its use in managing the spread of COVID-19. The issue is significant because recent evidence has shown that severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) can remain airborne longer and travel farther than anticipated earlier in the COVID-19 pandemic, albeit with diminishing concentrations and viability. While SARS-CoV-2 virions are around 60-140 nm in diameter, larger respiratory droplets and air pollution particles (>1 µm) have been found to harbor the virions. Removing particles that could carry SARS-CoV-2 from the air is possible using air filtration, which relies on the natural or mechanical movement of air. Among various types of air filters, high-efficiency particle arrestance (HEPA) filters have been recommended. Other types of filters are less or more effective and, correspondingly, are easier or harder to move air through. The use of masks, respirators, air filtration modules, and other dedicated equipment is an essential intervention in the management of COVID-19 spread. It is critical to consider the mechanisms of air filtration and to understand how aerosol particles containing SARS-CoV-2 virions interact with filter materials to determine the best practices for the use of air filtration to reduce the spread of COVID-19.
MeSH term(s)	Aerosols ; Air Filters/virology ; Betacoronavirus ; COVID-19 ; Coronavirus Infections/epidemiology ; Coronavirus Infections/prevention & control ; Humans ; Pandemics/prevention & control ; Pneumonia, Viral/epidemiology ; Pneumonia, Viral/prevention & control ; SARS-CoV-2
Chemical Substances	Aerosols
Keywords	covid19
Language	English
Publishing date	2020-07-04
Publishing country	Korea (South)
Document type	Journal Article
ZDB-ID	2590698-7
ISSN	2092-7193 ; 2092-7193
ISSN (online)	2092-7193
ISSN	2092-7193
DOI	10.4178/epih.e2020049
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Air filtration and SARS-CoV-2

Yevgen Nazarenko

Epidemiology and Health, Vol

2020 Volume 42

Abstract	Air filtration in various implementations has become a critical intervention in managing the spread of coronavirus disease 2019 (COVID-19). However, the proper deployment of air filtration has been hampered by an insufficient understanding of its principles. These misconceptions have led to uncertainty about the effectiveness of air filtration at arresting potentially infectious aerosol particles. A correct understanding of how air filtration works is critical for further decision-making regarding its use in managing the spread of COVID-19. The issue is significant because recent evidence has shown that severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) can remain airborne longer and travel farther than anticipated earlier in the COVID-19 pandemic, albeit with diminishing concentrations and viability. While SARS-CoV-2 virions are around 60-140 nm in diameter, larger respiratory droplets and air pollution particles (>1 µm) have been found to harbor the virions. Removing particles that could carry SARS-CoV-2 from the air is possible using air filtration, which relies on the natural or mechanical movement of air. Among various types of air filters, high-efficiency particle arrestance (HEPA) filters have been recommended. Other types of filters are less or more effective and, correspondingly, are easier or harder to move air through. The use of masks, respirators, air filtration modules, and other dedicated equipment is an essential intervention in the management of COVID-19 spread. It is critical to consider the mechanisms of air filtration and to understand how aerosol particles containing SARS-CoV-2 virions interact with filter materials to determine the best practices for the use of air filtration to reduce the spread of COVID-19.
Keywords	coronavirus ; covid-19 ; aerosols ; filtration ; hepa ; mpps ; Medicine ; R ; covid19
Subject code	690
Language	English
Publishing date	2020-07-01T00:00:00Z
Publisher	Korean Society of Epidemiology
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Environmental Health in Ukraine: Lessons from 9/11.

Speiser, Erin / Nazarenko, Yevgen

Explore (New York, N.Y.)

2022 Volume 18, Issue 6, Page(s) 719–720

MeSH term(s)	Humans ; Ukraine ; Environmental Health
Language	English
Publishing date	2022-08-28
Publishing country	United States
Document type	Journal Article
ZDB-ID	2183945-1
ISSN	1878-7541 ; 1550-8307
ISSN (online)	1878-7541
ISSN	1550-8307
DOI	10.1016/j.explore.2022.08.014
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Article: Air filtration and SARS-CoV-2

Nazarenko, Yevgen

Epidemiol Health

Abstract	Air filtration in various implementations has become a critical intervention in managing the spread of coronavirus disease 2019 (COVID-19). However, the proper deployment of air filtration has been hampered by an insufficient understanding of its principles. These misconceptions have led to uncertainty about the effectiveness of air filtration at arresting potentially infectious aerosol particles. A correct understanding of how air filtration works is critical for further decision-making regarding its use in managing the spread of COVID-19. The issue is significant because recent evidence has shown that severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) can remain airborne longer and travel farther than anticipated earlier in the COVID-19 pandemic, albeit with diminishing concentrations and viability. While SARS-CoV-2 virions are around 60-140 nm in diameter, larger respiratory droplets and air pollution particles (>1 µm) have been found to harbor the virions. Removing particles that could carry SARS-CoV-2 from the air is possible using air filtration, which relies on the natural or mechanical movement of air. Among various types of air filters, high-efficiency particle arrestance (HEPA) filters have been recommended. Other types of filters are less or more effective and, correspondingly, are easier or harder to move air through. The use of masks, respirators, air filtration modules, and other dedicated equipment is an essential intervention in the management of COVID-19 spread. It is critical to consider the mechanisms of air filtration and to understand how aerosol particles containing SARS-CoV-2 virions interact with filter materials to determine the best practices for the use of air filtration to reduce the spread of COVID-19.
Keywords	covid19
Publisher	WHO
Document type	Article
Note	WHO #Covidence: #650379
Database	COVID19

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Article ; Online: Air quality standards for the concentration of particulate matter 2.5, global descriptive analysis.

Nazarenko, Yevgen / Pal, Devendra / Ariya, Parisa A

Bulletin of the World Health Organization

2020 Volume 99, Issue 2, Page(s) 125–137D

Abstract: Objective: To compare ambient air quality standards for the mass concentration of aerosol particles smaller than approximately 2.5 μm (PM: Methods: We did a review of government documents and literature on air quality standards. We extracted and ... ...

Abstract	Objective: To compare ambient air quality standards for the mass concentration of aerosol particles smaller than approximately 2.5 μm (PM Methods: We did a review of government documents and literature on air quality standards. We extracted and summarized the PM Findings: We obtained data on standards from 62 jurisdictions worldwide, including 58 countries. Of the world's 136.06 million km Conclusion: The metrics used in PM
MeSH term(s)	Air Pollutants/adverse effects ; Air Pollutants/analysis ; Air Pollution/adverse effects ; Air Pollution/analysis ; Australia ; Canada ; Environmental Monitoring ; Humans ; Particulate Matter/analysis ; Particulate Matter/standards
Chemical Substances	Air Pollutants ; Particulate Matter
Language	English
Publishing date	2020-12-15
Publishing country	Switzerland
Document type	Journal Article ; Review
ZDB-ID	80213-x
ISSN	1564-0604 ; 0042-9686 ; 0366-4996 ; 0510-8659
ISSN (online)	1564-0604
ISSN	0042-9686 ; 0366-4996 ; 0510-8659
DOI	10.2471/BLT.19.245704
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Article ; Online: Advancing the science of dynamic airborne nanosized particles using Nano-DIHM

Devendra Pal / Yevgen Nazarenko / Thomas C. Preston / Parisa A. Ariya

Communications Chemistry, Vol 4, Iss 1, Pp 1-

2021 Volume 17

Abstract: In situ and real-time characterization of dynamic airborne particles is important for fundamental as well as applied atmospheric chemistry, but imaging usually requires trapping the particles. Here the authors use an integrated digital in-line ... ...

Abstract	In situ and real-time characterization of dynamic airborne particles is important for fundamental as well as applied atmospheric chemistry, but imaging usually requires trapping the particles. Here the authors use an integrated digital in-line holographic microscope coupled with a flow tube to study moving <200 nm-sized particles without optical traps.
Keywords	Chemistry ; QD1-999
Language	English
Publishing date	2021-12-01T00:00:00Z
Publisher	Nature Portfolio
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Advancing the science of dynamic airborne nanosized particles using Nano-DIHM.

Pal, Devendra / Nazarenko, Yevgen / Preston, Thomas C / Ariya, Parisa A

Communications chemistry

2021 Volume 4, Issue 1, Page(s) 170

Abstract: In situ and real-time characterization of aerosols is vital to several fundamental and applied research domains including atmospheric chemistry, air quality monitoring, or climate change studies. To date, digital holographic microscopy is commonly used ... ...

Abstract	In situ and real-time characterization of aerosols is vital to several fundamental and applied research domains including atmospheric chemistry, air quality monitoring, or climate change studies. To date, digital holographic microscopy is commonly used to characterize dynamic nanosized particles, but optical traps are required. In this study, a novel integrated digital in-line holographic microscope coupled with a flow tube (Nano-DIHM) is demonstrated to characterize particle phase, shape, morphology, 4D dynamic trajectories, and 3D dimensions of airborne particles ranging from the nanoscale to the microscale. We demonstrate the application of Nano-DIHM for nanosized particles (≤200 nm) in dynamic systems without optical traps. The Nano-DIHM allows observation of moving particles in 3D space and simultaneous measurement of each particle's three dimensions. As a proof of concept, we report the real-time observation of 100 nm and 200 nm particles, i.e. polystyrene latex spheres and the mixture of metal oxide nanoparticles, in air and aqueous/solid/heterogeneous phases in stationary and dynamic modes. Our observations are validated by high-resolution scanning/transmission electron microscopy and aerosol sizers. The complete automation of software (Octopus/Stingray) with Nano-DIHM permits the reconstruction of thousands of holograms within an hour with 62.5 millisecond time resolution for each hologram, allowing to explore the complex physical and chemical processes of aerosols.
Language	English
Publishing date	2021-12-08
Publishing country	England
Document type	Journal Article
ZDB-ID	2929562-2
ISSN	2399-3669 ; 2399-3669
ISSN (online)	2399-3669
ISSN	2399-3669
DOI	10.1038/s42004-021-00609-9
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Article: Organic Sorbents for Air Purification: A New Application for Recyclable Hyper-Cross-Linked Polystyrene

Nazarenko, Yevgen / Narayanan, Chitra / Szeptycki, Hannah / Kayium, Aflah / Ariya, Parisa A

Industrial & engineering chemistry process design and development. 2021 Mar. 05, v. 60, no. 10

2021

Abstract: Sorption-based air purification is typically performed using inorganic sorbents such as activated carbon. Organic polymeric sorbents with a microporous or nanoporous structure could be a promising alternative. We investigated the effectiveness of four ... ...

Abstract	Sorption-based air purification is typically performed using inorganic sorbents such as activated carbon. Organic polymeric sorbents with a microporous or nanoporous structure could be a promising alternative. We investigated the effectiveness of four hyper-cross-linked polystyrenic sorbents against formaldehyde and compared it to the effectiveness of three activated-carbon-based preparations. One of the polystyrenic sorbents (MN270) was nanostructured, and it reduced formaldehyde concentration by over 95% (from 0.463 ± 0.037 mg/m³ to 0.020 ± 0.002 mg/m³) in short-duration tests. In the long-duration tests (500 min), MN270’s performance was comparable to that of the pure coconut shell activated carbon. MN270 was found to be nanostructured (10–200 nm pores), which was associated with its superior sorptive properties and the comparatively high Brunauer–Emmett–Teller (BET) result of 1370.49 ± 19.19 m²/g, which was higher than the best-performing activated carbon sorbent (941.76 ± 18.10 m²/g). The novel application of the hyper-cross-linked polystyrenic sorbents for air purification provides a feasible and potentially more sustainable alternative to inorganic sorbents, thanks to their recyclability and manufacturability from biomass.
Keywords	activated carbon ; air ; biomass ; coconuts ; formaldehyde ; nanopores ; polystyrenes ; porous media ; process design ; sorbents
Language	English
Dates of publication	2021-0305
Size	p. 3969-3980.
Publishing place	American Chemical Society
Document type	Article
Note	NAL-AP-2-clean
ZDB-ID	1484436-9
ISSN	1520-5045 ; 0888-5885
ISSN (online)	1520-5045
ISSN	0888-5885
DOI	10.1021/acs.iecr.0c05722
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Exposure to nanoscale and microscale particulate air pollution prior to mining development near a northern indigenous community in Québec, Canada.

Ghoshdastidar, Avik J / Hu, Zhenzhong / Nazarenko, Yevgen / Ariya, Parisa A

Environmental science and pollution research international

2018 Volume 25, Issue 9, Page(s) 8976–8988

Abstract: This study serves as a baseline characterization of indoor and outdoor air quality in a remote northern indigenous community prior to the start of a major nearby mining operation, including measurements of nanoparticles, which has never been performed in ...

Abstract	This study serves as a baseline characterization of indoor and outdoor air quality in a remote northern indigenous community prior to the start of a major nearby mining operation, including measurements of nanoparticles, which has never been performed in this context before. We performed aerosol sample collection and real-time aerosol measurements at six different locations at the Cree First Nation of Waswanipi and the Montviel campsite, located 45 km west of the Cree First Nation of Waswanipi, in the south of the Nord-du-Québec region. High concentrations of airborne nanoparticles (up to 3.98 × 10
MeSH term(s)	Aerosols/analysis ; Aerosols/chemistry ; Air Pollution, Indoor/analysis ; Canada ; Environmental Monitoring/methods ; Humans ; Particle Size ; Particulate Matter/analysis ; Particulate Matter/chemistry ; Quebec ; Ventilation
Chemical Substances	Aerosols ; Particulate Matter
Language	English
Publishing date	2018-01-14
Publishing country	Germany
Document type	Journal Article
ZDB-ID	1178791-0
ISSN	1614-7499 ; 0944-1344
ISSN (online)	1614-7499
ISSN	0944-1344
DOI	10.1007/s11356-018-1201-5
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Article: The Effects of Bedding Type in Stalls and Activity of Horses on Stall Air Quality

Nazarenko, Yevgen / Carey A. Williams / Gediminas Mainelis / Michael L. Westendorf

Journal of equine veterinary science. 2018 Aug., v. 67

2018

Abstract: When horses are in stalls, they are exposed to airborne particulate matter (PM) (aerosol), including the airborne particles released from stalls' bedding materials because of horses' activities. The aerosol particles are inhaled by the horses and can be ... ...

Abstract	When horses are in stalls, they are exposed to airborne particulate matter (PM) (aerosol), including the airborne particles released from stalls' bedding materials because of horses' activities. The aerosol particles are inhaled by the horses and can be a factor in their health and racing performance. We assessed the potential for inhalation and exposure of horses to airborne PM of four different stall bedding materials (straw, shavings, STREUfex, and Woody Pet). The use of straw resulted in the lowest concentration of airborne PM in all three size fractions (PM2.5 = 8.6 ± 5.9 μg/m3, PM10 = 95.3 ± 100.0 μg/m3, and PM total = 184.7 ± 231.9 μg/m3), whereas the use of Woody Pet resulted in the highest (PM2.5 = 10.5 ± 11.5 μg/m3, PM10 = 204.8 ± 258.8 μg/m3, and PM total = 650.3 ± 1157.8 μg/m3). We found significantly lower (P < .0001) aerosol concentrations for the activity type “sleeping” (PM2.5 = 6.54 ± 2.60 μg/m3, PM10 = 80.29 ± 54.69 μg/m3, and PM total = 165.24 ± 137.02 μg/m3) than for “eating” (PM2.5 = 13.36 ± 9.19 μg/m3, PM10 = 230.64 ± 212.26 μg/m3, and PM total = 615.14 ± 649.89 μg/m3) and walking (PM2.5 = 12.92 ± 11.56 μg/m3, PM10 = 224.09 ± 256.90 μg/m3, and PM total = 651.91 ± 1425.56 μg/m3). The use of shavings, STREUfex, and Woody Pet resulted in a higher concentration of airborne particles compared to straw when bedding was disturbed by the horses' activities. The findings point to the importance of choice of bedding with minimal aerosol-generation potential because different bedding materials demonstrated substantially different levels of generated PM, particularly in response to more intense types of horses' activities. The resuspension of the settled PM by the horses blowing and poking into horizontal surfaces within the stalls is a likely cause of acute aerosol inhalation exposure. In addition to selecting bedding materials with the lowest aerosol-generating potential, we recommend evaluation of interventions such as regular wet cleaning and elimination of horizontal surfaces such as window sills accessible to horses in the design of stalls.
Keywords	aerosols ; air quality ; breathing ; cleaning ; horses ; inhalation exposure ; particulates ; racing performance ; straw ; walking
Language	English
Dates of publication	2018-08
Size	p. 91-98.
Publishing place	Elsevier Inc.
Document type	Article
ZDB-ID	2102631-2
ISSN	1542-7412 ; 0737-0806
ISSN (online)	1542-7412
ISSN	0737-0806
DOI	10.1016/j.jevs.2018.03.014
Database	NAL-Catalogue (AGRICOLA)

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