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Karoline K. (Johnson) Barkjohn
Karoline K. (Johnson) Barkjohn
U.S. Environmental Protection Agency
Verified email at duke.edu
Title
Cited by
Cited by
Year
Field evaluation of low-cost particulate matter sensors in high-and low-concentration environments
T Zheng, MH Bergin, KK Johnson, SN Tripathi, S Shirodkar, MS Landis, ...
Atmospheric Measurement Techniques 11 (8), 4823-4846, 2018
3092018
Development and application of a United States wide correction for PM2. 5 data collected with the PurpleAir sensor
KK Barkjohn, B Gantt, AL Clements
Atmos. Meas. Tech. Discuss. https://doi. org/10.5194/amt-2020-413, 2020
1692020
Field test of several low-cost particulate matter sensors in high and low concentration urban environments
KK Johnson, MH Bergin, AG Russell, GSW Hagler
Aerosol and Air Quality Research 18 (3), 565-578, 2018
123*2018
Toxic volatile organic compounds in 20 homes in Shanghai: Concentrations, inhalation health risks, and the impacts of household air cleaning
L Fang, C Norris, K Johnson, X Cui, J Sun, Y Teng, E Tian, W Xu, Z Li, ...
Building and Environment 157, 309-318, 2019
742019
Association Between Bedroom Particulate Matter Filtration and Changes in Airway Pathophysiology in Children With Asthma
X Cui, Z Li, Y Teng, KK Barkjohn, CL Norris, L Fang, GN Daniel, L He, ...
JAMA pediatrics 174 (6), 533-542, 2020
622020
The influence of air cleaners on indoor particulate matter components and oxidative potential in residential households in Beijing
Y Zhan, K Johnson, C Norris, MM Shafer, MH Bergin, Y Zhang, J Zhang, ...
Science of The Total Environment 626, 507-518, 2018
592018
Using low-cost sensors to quantify the effects of air filtration on indoor and personal exposure relevant PM2. 5 concentrations in Beijing, China
KK Barkjohn, MH Bergin, C Norris, JJ Schauer, Y Zhang, M Black, M Hu, ...
Aerosol and Air Quality Research 20 (2), 297-313, 2020
582020
Using low cost sensors to measure ambient particulate matter concentrations and on-road emissions factors
KK Johnson, MH Bergin, AG Russell, GSW Hagler
Atmospheric Measurement Techniques Discussions 2016, 1-22, 2016
562016
The impact of household air cleaners on the oxidative potential of PM2. 5 and the role of metals and sources associated with indoor and outdoor exposure
C Brehmer, C Norris, KK Barkjohn, MH Bergin, J Zhang, X Cui, Y Teng, ...
Environmental research 181, 108919, 2020
452020
Real‐time measurements of PM2.5 and ozone to assess the effectiveness of residential indoor air filtration in Shanghai homes
KK Barkjohn, C Norris, X Cui, L Fang, T Zheng, JJ Schauer, Z Li, Y Zhang, ...
Indoor air 31 (1), 74-87, 2021
432021
The impact of household air cleaners on the chemical composition and children's exposure to PM2. 5 metal sources in suburban Shanghai
C Brehmer, C Norris, KK Barkjohn, MH Bergin, J Zhang, X Cui, Y Zhang, ...
Environmental Pollution 253, 190-198, 2019
402019
Sources of volatile organic compounds in suburban homes in Shanghai, China, and the impact of air filtration on compound concentrations
C Norris, L Fang, KK Barkjohn, D Carlson, Y Zhang, J Mo, Z Li, J Zhang, ...
Chemosphere 231, 256-268, 2019
402019
Performance Testing Protocols, Metrics, and Target Values for Fine Particulate Matter Air Sensors: Use in Ambient, Outdoor, Fixed Sites, Non-Regulatory Supplemental and …
R Duvall, A Clements, G Hagler, A Kamal, V Kilaru, L Goodman, ...
US EPA Office of Research and Development, 2021
382021
Associations of personal exposure to air pollutants with airway mechanics in children with asthma
L He, Z Li, Y Teng, X Cui, KK Barkjohn, C Norris, L Fang, L Lin, Q Wang, ...
Environment International 138, 105647, 2020
372020
Personal Exposure to PM2.5 Oxidative Potential in Association with Pulmonary Pathophysiologic Outcomes in Children with Asthma
L He, C Norris, X Cui, Z Li, KK Barkjohn, C Brehmer, Y Teng, L Fang, L Lin, ...
Environmental Science & Technology 55 (5), 3101-3111, 2021
342021
Using low-cost sensors to monitor indoor, outdoor, and personal ozone concentrations in Beijing, China
MHMHB Meichen Liu, Karoline Kay Johnson Barkjohn, Christina Norris, James ...
Environmental Science: Processes & Impacts, 2020
302020
Malondialdehyde in nasal fluid: a biomarker for monitoring asthma control in relation to air pollution exposure
L He, X Cui, Z Li, Y Teng, KK Barkjohn, C Norris, L Fang, L Lin, Q Wang, ...
Environmental Science & Technology 54 (18), 11405-11413, 2020
282020
Creating clean air spaces during wildland fire smoke episodes: Web summit summary
G Davison, KK Barkjohn, GSW Hagler, AL Holder, S Coefield, C Noonan, ...
Frontiers in Public Health 9, 508971, 2021
202021
Children’s microenvironmental exposure to PM 2.5 and ozone and the impact of indoor air filtration
KK Barkjohn, C Norris, X Cui, L Fang, L He, JJ Schauer, Y Zhang, M Black, ...
Journal of Exposure Science & Environmental Epidemiology 30 (6), 971-980, 2020
202020
Performance testing protocols, metrics, and target values for ozone air sensors: Use in ambient, outdoor, fixed site, non-regulatory and informational monitoring applications
R Duvall, A Clements, G Hagler, A Kamal, V Kilaru, L Goodman, ...
US Environmental Protection Agency, 2021
182021
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