Evidence map›Paper›PMID 29023492›Full record

ArticlePloS one2017

Filter quality of electret masks in filtering 14.6-594 nm aerosol particles: Effects of five decontamination methods.

Tzu-Hsien Lin, Chih-Chieh Chen, Sheng-Hsiu Huang, Chung-Wen Kuo, Chane-Yu Lai, Wen-Yinn Lin

Open access · goldAbstract readComparative StudyEvaluation Study
In one paragraph

Article in PloS one, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
54citing papers in PubMed, 7 pooled it
9.5field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

54 citing papers in PubMed, 7 syntheses or guidelines pooled it, 128 citations in OpenAlex.

  1. Pooled it
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  8. Article
  9. Review
  10. Article
  11. Mask disinfection using atmospheric pressure cold plasma.International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases · 2022
    Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Impact on the fitness of N95 masks with extended use/limited reuse and dry heat decontamination.Journal of investigative medicine : the official publication of the American Federation for Clinical Research · 2022
    Article
  19. Conceptualizing a novel Hybrid Decontamination System (HDS) based on UV/HEnvironmental challenges (Amsterdam, Netherlands) · 2021
    Review
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 4 institutions in 1 country.

Tzu-Hsien LinDepartment of Dental Hygiene, China Medical University, Taichung, Taiwan.
Chih-Chieh ChenInstitute of Occupational Medicine and Industrial Hygiene, National Taiwan University, Taipei, Taiwan.
Sheng-Hsiu HuangInstitute of Occupational Medicine and Industrial Hygiene, National Taiwan University, Taipei, Taiwan.ORCID http://orcid.org/0000-0003-1372-0480
Chung-Wen KuoInstitute of Environmental Engineering and Management, National Taipei University of Technology, Taipei, Taiwan.
Chane-Yu LaiDepartment of Occupational Safety and Health, Chung Shan Medical University, Taichung, Taiwan.
Wen-Yinn LinInstitute of Environmental Engineering and Management, National Taipei University of Technology, Taipei, Taiwan.
National Taipei University of Technology · TWNational Taiwan University · TWChina Medical University · TWChung Shan Medical University Hospital · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This study investigates the effects of five decontamination methods on the filter quality (qf) of three commercially available electret masks-N95, Gauze and Spunlace nonwoven masks. Newly developed evaluation methods, the overall filter quality (qf,o) and the qf ratio were applied to evaluate the effectiveness of decontamination methods for respirators. A scanning mobility particle sizer is utilized to measure the concentration of polydispersed particles with diameter 14.6-594 nm. The penetration of particles and pressure drop (Δp) through the mask are used to determine qf and qf,o. Experimental results reveal that the most penetrating particle size (MPS) for the pre-decontaminated N95, Gauze and Spunlace masks were 118 nm, 461 nm and 279 nm, respectively, and the respective penetration rates were 2.6%, 23.2% and 70.0%. The Δp through the pretreated N95 masks was 9.2 mm H2O at the breathing flow rate of heavy-duty workers, exceeding the Δp values obtained through Gauze and Spunlace masks. Decontamination increased the sizes of the most penetrating particles, changing the qf values of all of the masks: qf fell as particle size increased because the penetration increased. Bleach increased the Δp of N95, but destroyed the Gauze mask. However, the use of an autoclave reduces the Δp values of both the N95 and the Gauze mask. Neither the rice cooker nor ethanol altered the Δp of the Gauze mask. Chemical decontamination methods reduced the qf,o values for the three electret masks. The value of qf,o for PM0.1 exceeded that for PM0.1-0.6, because particles smaller than 100 nm had lower penetration, resulting in a better qf for a given pressure drop. The values of qf,o, particularly for PM0.1, reveal that for the tested treatments and masks, physical decontamination methods are less destructive to the filter than chemical methods. Nevertheless, when purchasing new or reusing FFRs, penetration should be regarded as the priority.

Indexed as

DecontaminationFiltrationInhalation ExposureParticle SizeParticulate MatterRespiratory Protective DevicesParticulate Matter

Identifiers

PMID29023492
PMCPMC5638397
OpenAlexW2762834140

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.