Replicating the cross-sectional distribution of house-dust mite allergen found in carpet

Causer, Simon; Piper, C.; Shorter, Caroline; Lewis, Roger D.

doi:10.1080/00405000802260811

Cited by 4 publications

(4 citation statements)

References 13 publications

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“…Causer et al. () measured the effect of the dust‐embedding process on dust‐mite allergen distribution along cut pile carpet fibers. They soiled new carpets with house dust using the soiling system developed by Lewis et al.…”

Section: Resultsmentioning

confidence: 99%

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A comparative study of walking-induced dust resuspension using a consistent test mechanism

et al. 2014

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Section: Resultsmentioning

confidence: 99%

“…According to Qian () and Causer et al. (), an even distribution of particles along the carpet fiber can be achieved with the embedding process. The embedding procedure was not applied to hard flooring samples.…”

Section: Methodsmentioning

confidence: 99%

A comparative study of walking-induced dust resuspension using a consistent test mechanism

et al. 2014

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“…The discrepancy between the dust load and the number and mass concentration of the resuspended particles reveals the complexity of the resuspension process from a carpet, which needs to account for factors other than the dust load, such as the uneven vertical distribution of settled particles, particle physiochemical properties, and carpet material/structure. Artificial seeding processes for test dust may result in most particles embedded close to the carpet surface or in a relatively even distribution along the carpet fibers. , This may make the amount of resuspendable dust proportional to the dust load, and hence a positive correlation between the dust load and the resuspended particle concentration may be observed. However, in reality, the carpet dust loading process can result in an uneven vertical distribution of particles along the fibers.…”

Section: Resultsmentioning

confidence: 99%

“…Artificial seeding processes for test dust may result in most particles embedded close to the carpet surface or in a relatively even distribution along the carpet fibers. 4,91 This may make the amount of resuspendable dust proportional to the dust load, and hence a positive correlation between the dust load and the resuspended particle concentration may be observed. However, in reality, the carpet dust loading process can result in an uneven vertical distribution of particles along the fibers.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Particle Resuspension Dynamics in the Infant Near-Floor Microenvironment

Valkonen

et al. 2021

Environ. Sci. Technol.

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Carpet dust contains microbial and chemical material that can impact early childhood health. Infants may be exposed to greater quantities of resuspended dust, given their close proximity to floor surfaces. Chamber experiments with a robotic infant were integrated with a material balance model to provide new fundamental insights into the size-dependency of infant crawling-induced particle resuspension and exposure. The robotic infant was exposed to resuspended particle concentrations from 105 to 106 m–3 in the near-floor (NF) microzone during crawling, with concentrations generally decreasing following vacuum cleaning of the carpets. A pronounced vertical variation in particle concentrations was observed between the NF microzone and bulk air. Resuspension fractions for crawling are similar to those for adult walking, with values ranging from 10–6 to 10–1 and increasing with particle size. Meaningful amounts of dust are resuspended during crawling, with emission rates of 0.1 to 2 × 104 μg h–1. Size-resolved inhalation intake fractions ranged from 5 to 8 × 103 inhaled particles per million resuspended particles, demonstrating that a significant fraction of resuspended particles can be inhaled. A new exposure metric, the dust-to-breathing zone transport efficiency, was introduced to characterize the overall probability of a settled particle being resuspended and delivered to the respiratory airways. Values ranged from less than 0.1 to over 200 inhaled particles per million settled particles, increased with particle size, and varied by over 2 orders of magnitude among 12 carpet types.

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Dynamic characteristics of particulate matter resuspension due to human activities in indoor environments: A comprehensive review

Yuan,

Yao,

et al. 2023

Journal of Building Engineering

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Replicating the cross-sectional distribution of house-dust mite allergen found in carpet

Cited by 4 publications

References 13 publications

A comparative study of walking-induced dust resuspension using a consistent test mechanism

A comparative study of walking-induced dust resuspension using a consistent test mechanism

Particle Resuspension Dynamics in the Infant Near-Floor Microenvironment

Dynamic characteristics of particulate matter resuspension due to human activities in indoor environments: A comprehensive review

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