The influence of relative humidity and ground material on indoor walking-induced particle resuspension

Zheng, Shi-Yi; Zhang, Jiansheng; Mou, Jiegang; Du, Wei; Yu, Yankun; Wang, Liumin

doi:10.1080/10934529.2019.1644120

Cited by 12 publications

(4 citation statements)

References 23 publications

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“…Generally, particle size distribution varies from the nucleation mode (<30 nm in vacuum cleaning setting) to the accumulation mode (~100 nm, indoor combustion aerosols from smoking, cooking, or incense burning), and to the fine and coarse modes (>1 μm, resuspension aerosols) 31,32 . Also, with the decrease of relative humidity, the resuspension rate of fine particulate matter increases, 33 which complies with the frequent aggravation of allergic symptoms in the case of dust mite allergies during the heating season.…”

Section: Differences In Case Of Indoor Air Pollutionmentioning

confidence: 99%

How does particulate air pollution affect barrier functions and inflammatory activity of lung vascular endothelium?

Olesiejuk

Chałubiński

2023

Allergy

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Both particulate matter and gaseous components of air pollution have already been shown to increase cardiovascular mortality in numerous studies. It is, however, important to note that on their way to the bloodstream the polluting agents pass the lung barrier. Inside the alveoli, particles of approximately 0.4–1 μm are most efficiently deposited and commonly undergo phagocytosis by lung macrophages. Not only the soluble agents, but also particles fine enough to leave the alveoli enter the bloodstream in this finite part of the endothelium, reaching thus higher concentrations in close proximity of the alveoli and endothelium. Additionally, deposits of particulate matter linger in direct proximity of the endothelial cells and may induce inflammation, immune responses, and influence endothelial barrier dysfunction thus increasing PM bioavailability in positive feedback. The presented discussion provides an overview of possible components of indoor PM and how endothelium is thus influenced, with emphasis on lung vascular endothelium and clinical perspectives.

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Section: Differences In Case Of Indoor Air Pollutionmentioning

confidence: 99%

How does particulate air pollution affect barrier functions and inflammatory activity of lung vascular endothelium?

Olesiejuk

Chałubiński

2023

Allergy

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“…Meanwhile, differences in temperature indoors and outdoors also influence natural ventilation through the movement of air, and thus affecting indoor PM concentration [ 85 ]. With the increase of relative humidity, the resuspension rate of fine particulate matters decreased [ 86 ]. Several studies have demonstrated that air exchange rate has a significant effect on indoor PM concentrations under stable outdoor PM concentrations.…”

Section: Sources and Distribution Of Indoor Pmmentioning

confidence: 99%

Indoor Particulate Matter in Urban Households: Sources, Pathways, Characteristics, Health Effects, and Exposure Mitigation

Zhang

Magana-Arachchi

et al. 2021

IJERPH

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Particulate matter (PM) is a complex mixture of solid particles and liquid droplets suspended in the air with varying size, shape, and chemical composition which intensifies significant concern due to severe health effects. Based on the well-established human health effects of outdoor PM, health-based standards for outdoor air have been promoted (e.g., the National Ambient Air Quality Standards formulated by the U.S.). Due to the exchange of indoor and outdoor air, the chemical composition of indoor particulate matter is related to the sources and components of outdoor PM. However, PM in the indoor environment has the potential to exceed outdoor PM levels. Indoor PM includes particles of outdoor origin that drift indoors and particles that originate from indoor activities, which include cooking, fireplaces, smoking, fuel combustion for heating, human activities, and burning incense. Indoor PM can be enriched with inorganic and organic contaminants, including toxic heavy metals and carcinogenic volatile organic compounds. As a potential health hazard, indoor exposure to PM has received increased attention in recent years because people spend most of their time indoors. In addition, as the quantity, quality, and scope of the research have expanded, it is necessary to conduct a systematic review of indoor PM. This review discusses the sources, pathways, characteristics, health effects, and exposure mitigation of indoor PM. Practical solutions and steps to reduce exposure to indoor PM are also discussed.

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“…Environmental conditions also greatly affect the resuspension of particles 13 . Increases in relative humidity (RH) can suppress particle resuspension 52,53 . An increase in RH decreases the resuspension rates of hydrophilic particles, while hydrophobic particles are less sensitive to the change of RH 54 .…”

Section: Introductionmentioning

confidence: 99%

“… 13 Increases in relative humidity (RH) can suppress particle resuspension. 52 , 53 An increase in RH decreases the resuspension rates of hydrophilic particles, while hydrophobic particles are less sensitive to the change of RH. 54 For example, high RH decreased particle resuspension for an old carpet, but enhanced resuspension for a new carpet.…”

Section: Introductionmentioning

confidence: 99%

Resuspension of particles deposited by nano‐enabled consumer sprays: The role of product type, flooring material, and resuspension force

Zhang

Mainelis

2022

Indoor Air

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Particulate matter (PM) is a known indoor air pollutant, and it can cause adverse effects, including decreased lung function, increased respiratory symptoms such as bronchitis and asthma, and increased morbidity and mortality due to cardiovascular diseases. [1][2][3][4] The presence of airborne particles indoors is caused by outdoor PM and indoor activities such as cooking, cleaning, use of sprays, as well as candles and incense. [5][6][7][8] In addition, a large fraction of indoor particles eventually settles on surfaces which then can then be resuspended back into the air by human activities. [9][10][11][12][13] The resuspension of particles is an important indoor particle source. Resuspension of different types of particles (e.g., silica particles, 14 potassium chloride [KCl] salt particles, 15 alumina powder, 16 cigarette smoke particles, 17 Arizona Test Dust, 18,19 biological particles, 10,20 and dust from real homes 5,21 ) has been investigated.

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The influence of relative humidity and ground material on indoor walking-induced particle resuspension

Cited by 12 publications

References 23 publications

How does particulate air pollution affect barrier functions and inflammatory activity of lung vascular endothelium?

How does particulate air pollution affect barrier functions and inflammatory activity of lung vascular endothelium?

Indoor Particulate Matter in Urban Households: Sources, Pathways, Characteristics, Health Effects, and Exposure Mitigation

Resuspension of particles deposited by nano‐enabled consumer sprays: The role of product type, flooring material, and resuspension force

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