Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Development and evaluation of an impactor for a PM2.5 speciation sampler.

P Demokritou1, I G Kavouras, D Harrison

  • 1Environmental Science and Engineering Program, School of Public Health, Harvard University, Boston, Massachusetts, USA. pdemokri@hsph.harvard.edu

Journal of the Air & Waste Management Association (1995)
|April 27, 2001
PubMed
Summary

A new particle speciation sampler effectively measures fine particulate matter (PM2.5) and sulfate concentrations. Laboratory and field tests confirm its accuracy, showing good agreement with the Federal Reference Method.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Vulnerability and Pediatric Pain.

Paediatric & neonatal pain·2026
Same author

The effects of urban green space and road proximity to indoor traffic-related PM<sub>2.5</sub>, NO<sub>2</sub>, and BC exposure in inner-city schools.

Journal of exposure science & environmental epidemiology·2024
Same author

The clinical utility of PET/CT scan and tissue biopsy in the management and follow-up of paediatric Hodgkin lymphoma in South Africa.

South African journal of surgery. Suid-Afrikaanse tydskrif vir chirurgie·2023
Same author

Evaluating TROPOMI and MODIS performance to capture the dynamic of air pollution in São Paulo state: A case study during the COVID-19 outbreak.

Remote sensing of environment·2023
Same author

Giant thymolipoma in a child: The silent chest mass.

African journal of thoracic and critical care medicine·2022
Same author

Quantitative Determination of Campylobacter on Broilers along 22 United Kingdom Processing Lines To Identify Potential Process Control Points and Cross-Contamination from Colonized to Uncolonized Flocks.

Journal of food protection·2022

Area of Science:

  • Environmental Science
  • Analytical Chemistry
  • Atmospheric Science

Background:

  • Accurate measurement of particulate matter (PM2.5) composition is crucial for air quality assessment and health studies.
  • Conventional samplers often face challenges with particle bounce and accurate speciation.
  • Development of robust and validated sampling methods is essential for reliable environmental monitoring.

Purpose of the Study:

  • To develop and validate a conventional impactor-based particle speciation sampler.
  • To characterize the impactor's performance across different operating conditions and design parameters.
  • To assess the sampler's agreement with established Federal Reference Methods (FRM) for PM2.5 mass and sulfate.

Main Methods:

  • Design and construction of a particle speciation sampler including a PM2.5 impactor, honeycomb denuder, and filter pack.

Related Experiment Videos

  • Experimental characterization of impactor performance, evaluating collection efficiency based on Reynolds number, nozzle-plate distance, and substrate coating.
  • Minimization of particle bounce using a greased impaction substrate.
  • Field intercomparison experiments at 10 and 16.7 L/min airflow rates.
  • Comparison of measured PM2.5 mass and SO4(2-) concentrations with FRM.

    • Main Results:

    • The impactor's collection efficiency was successfully characterized and optimized.
    • Particle bounce was significantly reduced using a greased impaction substrate.
    • Field intercomparison studies showed good agreement between the developed sampler and the FRM for both PM2.5 mass and SO4(2-) concentrations.
    • Laboratory chamber tests corroborated the good performance of the impactor compared to the FRM.

    Conclusions:

    • The developed particle speciation sampler, incorporating a conventional impactor, is a validated tool for accurate PM2.5 and sulfate measurement.
    • The sampler's performance is reliable across different sampling rates and validated through rigorous laboratory and field testing.
    • This sampler offers a viable alternative for air quality monitoring, providing results consistent with established reference methods.