Details:

Alternative Title:
Indoor Air
Publisher's site:
http://dx.doi.org/10.1111/ina.12318
Personal Author:
Volckens, John ; Quinn, Casey ; Leith, David ; Mehaffy, John ; Henry, Charles S. ; ... More +
Volckens, John ; Quinn, Casey ; Leith, David ; Mehaffy, John ; Henry, Charles S. ; Miller-Lionberg, Daniel Less -
Description:
Assessing personal exposure to air pollution has long proven challenging due to technological limitations posed by the samplers themselves. Historically, wearable aerosol monitors have proven to be expensive, noisy, and burdensome. The objective of this work was to develop a new type of wearable monitor, an ultrasonic personal aerosol sampler (UPAS), to overcome many of the technological limitations in personal exposure assessment. The UPAS is a time-integrated monitor that features a novel micropump that is virtually silent during operation. A suite of onboard environmental sensors integrated with this pump measure and record mass airflow (0.5-3.0 L/min, accurate within 5%), temperature, pressure, relative humidity, light intensity, and acceleration. Rapid development of the UPAS was made possible through recent advances in low-cost electronics, open-source programming platforms, and additive manufacturing for rapid prototyping. Interchangeable cyclone inlets provided a close match to the EPA PM|mass criterion (within 5%) for device flows at either 1.0 or 2.0 L/min. Battery life varied from 23 to 45 hours depending on sample flow rate and selected filter media. Laboratory tests of the UPAS prototype demonstrate excellent agreement with equivalent federal reference method samplers for gravimetric analysis of PM|across a broad range of concentrations.
Subject:
[+]
Aerosols
Air Pollutants
Air Pollution
Article
Citizen-science
Environmental Monitoring
Equipment Design
Exposure
Humans
Low-cost
PM2.5
Sensor
Ultrasonics
Wearable
Wearable Electronic Devices

Source:
Indoor Air. 27(2):409-416.
Pubmed ID:
27354176
Document Type:
Journal Article
Funding:
R01 OH010662/OH/NIOSH CDC HHS/United States ; R21 ES024719/ES/NIEHS NIH HHS/United States
R01 OH010662/OH/NIOSH CDC HHS/United States ; R21 ES024719/ES/NIEHS NIH HHS/United States Less -
Collection(s):
CDC Public Access
Main Document Checksum:
[+]
urn:sha256:9845ad1465e4e42388389f18286c7206f73b731b9bbc49ce779decd7f0b0e268
File Type:

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