[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

Barkjohn et al., 2020 - Google Patents

Using low-cost sensors to quantify the effects of air filtration on indoor and personal exposure relevant PM2. 5 concentrations in Beijing, China

Barkjohn et al., 2020

View HTML
Document ID
11637509928159863315
Author
Barkjohn K
Bergin M
Norris C
Schauer J
Zhang Y
Black M
Hu M
Zhang J
et al.
Publication year
Publication venue
Aerosol and air quality research

External Links

Snippet

Residents of polluted cities frequently use indoor air purifiers in an attempt to improve their health by reducing their exposure to air pollutants, despite the fact that few studies have assessed these devices under relevant field conditions. Low-cost air monitors are …
Continue reading at aaqr.org (HTML) (other versions)

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by the preceding groups
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
    • G01N33/0036—Specially adapted to detect a particular component
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by the preceding groups
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0073—Control unit therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by the preceding groups
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0006—Calibrating gas analysers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means by investigating the impedance of the material
    • G01N27/04—Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means by investigating the impedance of the material by investigating resistance
    • G01N27/12—Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means by investigating the impedance of the material by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
    • G01N27/121—Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means by investigating the impedance of the material by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid for determining moisture content, e.g. humidity, of the fluid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G01N21/15—Preventing contamination of the components of the optical system or obstruction of the light path
    • G01N2021/155—Monitoring cleanness of window, lens, or other parts
    • G01N2021/157—Monitoring by optical means

Similar Documents

Publication Publication Date Title
Barkjohn et al. Using low-cost sensors to quantify the effects of air filtration on indoor and personal exposure relevant PM2. 5 concentrations in Beijing, China
Wallace et al. Calibration of low-cost PurpleAir outdoor monitors using an improved method of calculating PM2. 5
Barkjohn et al. Real‐time measurements of PM2. 5 and ozone to assess the effectiveness of residential indoor air filtration in Shanghai homes
Zamora et al. One year evaluation of three low-cost PM2. 5 monitors
Ampollini et al. Observations and contributions of real-time indoor ammonia concentrations during HOMEChem
Wallace et al. Validation of continuous particle monitors for personal, indoor, and outdoor exposures
Mehadi et al. Laboratory and field evaluation of real-time and near real-time PM2. 5 smoke monitors
Tryner et al. Design and testing of a low-cost sensor and sampling platform for indoor air quality
Semple et al. Contribution of solid fuel, gas combustion, or tobacco smoke to indoor air pollutant concentrations in Irish and Scottish homes
Shi et al. Validation of a light-scattering PM2. 5 sensor monitor based on the long-term gravimetric measurements in field tests
Villanueva et al. Sampling and analysis techniques for inorganic air pollutants in indoor air
Che et al. Factors affecting variability in gaseous and particle microenvironmental air pollutant concentrations in Hong Kong primary and secondary schools
Zhao et al. Using portable particle sizing instrumentation to rapidly measure the penetration of fine and ultrafine particles in unoccupied residences
Lung et al. Concurrent assessment of personal, indoor, and outdoor PM2. 5 and PM1 levels and source contributions using novel low‐cost sensing devices
Liu et al. Using low-cost sensors to monitor indoor, outdoor, and personal ozone concentrations in Beijing, China
Xie et al. Chemical composition of outdoor and indoor PM2. 5 collected during haze events: Transformations and modified source contributions resulting from outdoor‐to‐indoor transport
Wu et al. Evaluation and quality control of personal nephelometers in indoor, outdoor and personal environments
Sankhyan et al. Assessment of PM 2.5 concentrations, transport, and mitigation in indoor environments using low-cost air quality monitors and a portable air cleaner
Pawar et al. Humidity, density, and inlet aspiration efficiency correction improve accuracy of a low-cost sensor during field calibration at a suburban site in the North-Western Indo-Gangetic plain (NW-IGP)
Wang et al. A novel low sampling rate and cost-efficient active sampler for medium/long-term monitoring of gaseous pollutants
Anitha et al. Development of an IoT-enabled air pollution monitoring and air purifier system
Li et al. Determinants of personal exposure to fine particulate matter in the retired adults–Results of a panel study in two megacities, China
Reis et al. Using low-cost sensors to assess real-time comfort and air quality patterns in indoor households
Li Recent advances in low-cost particulate matter sensor: calibration and application
Vijay et al. Examining the spatial and temporal variations in the indoor gaseous, PM2. 5, BC concentrations in urban homes in India