Emissions of indoor air pollutants from six user scenarios in a model room

Höllbacher, Eva; Ters, Thomas; Rieder-Gradinger, Cornelia; Srebotnik, Ewald

doi:10.1016/j.atmosenv.2016.11.033

Cited by 45 publications

(26 citation statements)

References 38 publications

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“…[ 93 ]. Although these are not typically taken into account, the use of electric air fresheners also has a high capacity for emitting particles [ 94 , 95 , 96 ]. Since airborne particles are deposited on adjacent surfaces, one of the aspects with the greatest influence on the increase in indoor particle concentrations is the re-suspension due to the movement of the occupants.…”

Section: Resultsmentioning

confidence: 99%

Bad Air Can Also Kill: Residential Indoor Air Quality and Pollutant Exposure Risk during the COVID-19 Crisis

Domínguez-Amarillo

Fernández-Agüera

Cesteros-García

et al. 2020

IJERPH

111

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During the first outbreak of the SARS-CoV-2 pandemic the population, focusing primarily on the risk of infection, was generally inattentive to the quality of indoor air. Spain, and the city of Madrid in particular, were among the world’s coronavirus hotspots. The country’s entire population was subject to a 24/7 lockdown for 45 days. This paper describes a comparative longitudinal survey of air quality in four types of housing in the city of Madrid before and during lockdown. The paper analysed indoor temperatures and variations in CO2, 2.5 μm particulate matter (PM2.5) and total volatile organic compound (TVOC) concentrations before and during lockdown. The mean daily outdoor PM2.5 concentration declined from 11.04 µg/m3 before to 7.10 µg/m3 during lockdown. Before lockdown the NO2 concentration values scored as ‘very good’ 46% of the time, compared to 90.9% during that period. Although the city’s outdoor air quality improved, during lockdown the population’s exposure to indoor pollutants was generally more acute and prolonged. Due primarily to concern over domestic energy savings, the lack of suitable ventilation and more intensive use of cleaning products and disinfectants during the covid-19 crisis, indoor pollutant levels were typically higher than compatible with healthy environments. Mean daily PM2.5 concentration rose by approximately 12% and mean TVOC concentration by 37% to 559%. The paper also puts forward a series of recommendations to improve indoor domestic environments in future pandemics and spells out urgent action to be taken around indoor air quality (IAQ) in the event of total or partial quarantining to protect residents from respiratory ailments and concomitantly enhanced susceptibility to SARS-CoV-2, as identified by international medical research.

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Section: Resultsmentioning

confidence: 99%

Bad Air Can Also Kill: Residential Indoor Air Quality and Pollutant Exposure Risk during the COVID-19 Crisis

Domínguez-Amarillo

Fernández-Agüera

Cesteros-García

et al. 2020

IJERPH

111

View full text Add to dashboard Cite

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“…AgBB 2015; Derbez et al 2014;DIN 2006;Eichholzer et al 2010;Eurofins 2016;Guo et al 2004;He et al 2012;Höllbacher et al 2017;Jensen et al 2001;Jones 1999;Kim et al 2010;Lin et al 2009;Niedermayer et al 2013;Nyrud et al 2012;Ojala et al 2006, Oppl 2014; The European Parliament and the Council of the European Union 2011; Wolkoff 2013; Yu and Kim 2012;Zhu and Shen 2016) was reviewed prior to the development of the interview guideline. A pre-test with researches active in the field of VOC research helped to verify the interview guideline.…”

Section: Methodsmentioning

confidence: 99%

Two experts, three opinions: volatile organic compounds’ testing methods and regulative systems

Huber

Hesser

et al. 2017

Eur. J. Wood Prod.

Self Cite

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“…Concentrations of organics such as benzene, ethylbenzene, and o -xylene were less than 5 µg m −3 ; toluene and xylene isomers, instead, exceeded 5 µg m −3 , with concentrations greater than 15 µg m −3 in most cases. Recently, Höllbacher et al [ 6 ] studied indoor air quality considering specific human activities, and they monitored VOCs, particulate matter (PM), carbonyl compounds and CO 2 . The highest VOC concentration recorded was around 3500 µg m −3 ; they detected a maximum formaldehyde concentration of 76 µg m −3 , and the PM concentration was 378 µg m −3 .…”

Section: Introductionmentioning

confidence: 99%

Nano-MnO2 Decoration of TiO2 Microparticles to Promote Gaseous Ethanol Visible Photoremoval

et al. 2018

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TiO2-based photocatalysis under visible light is an attractive way to abate air pollutants. Moreover, developing photocatalytic materials on a large-scale requires safe and low-cost precursors. Both high-performance TiO2 nanopowders and visible-light active noble metals do not match these requirements. Here, we report the design of novel Mn-decorated micrometric TiO2 particles. Pigmentary TiO2 replaced unsafe nano-TiO2 and firmly supported MnOx particles. Mn replaced noble metals such as Au or Ag, opening the way for the development of lower cost catalysts. Varying Mn loading or pH during the impregnation affected the final activity, thus giving important information to optimize the synthesis. Photocatalytic activity screening occurred on the gas-phase degradation of ethanol as a reference molecule, both under ultraviolet (UV) (6 h) and Light Emitting Diode (LED) (24 h) irradiation. Mn-doped TiO2 reached a maximum ethanol degradation of 35% under visible light after 24 h for the sample containing 20% of Mn. Also, we found that an acidic pH increased both ethanol degradation and mineralization to CO2, while an alkaline pH drastically slowed down the reaction. A strict correlation between photocatalytic results and physico-chemical characterizations of the synthesized powders were drawn.

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Emissions of indoor air pollutants from six user scenarios in a model room

Cited by 45 publications

References 38 publications

Bad Air Can Also Kill: Residential Indoor Air Quality and Pollutant Exposure Risk during the COVID-19 Crisis

Bad Air Can Also Kill: Residential Indoor Air Quality and Pollutant Exposure Risk during the COVID-19 Crisis

Two experts, three opinions: volatile organic compounds’ testing methods and regulative systems

Nano-MnO2 Decoration of TiO2 Microparticles to Promote Gaseous Ethanol Visible Photoremoval

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