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Related Experiment Videos

Evaluation of performance reference compounds in polyethylene-based passive air samplers.

Michael E Bartkow1, Kevin C Jones, Karen E Kennedy

  • 1National Research Centre for Environmental Toxicology (ENTOX), University of Queensland, Coopers Plains, Queensland 4108, Australia. m.bartkow@uq.edu.au

Environmental Pollution (Barking, Essex : 1987)
|April 25, 2006
PubMed
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Performance reference compounds (PRCs) in polyethylene-based passive air samplers (PSDs) help correct for wind speed variations. This method accurately measures air concentrations, improving passive sampling reliability.

Area of Science:

  • Environmental Chemistry
  • Analytical Chemistry
  • Air Quality Monitoring

Background:

  • Passive air samplers (PSDs) offer a cost-effective method for air quality monitoring.
  • Wind speed can significantly influence the performance and accuracy of passive air samplers.
  • Standardizing passive air sampler data across varying environmental conditions is crucial.

Purpose of the Study:

  • To investigate the impact of wind speed on the performance of polyethylene-based passive air samplers (PSDs).
  • To evaluate the utility of performance reference compounds (PRCs) in correcting for wind speed effects in PSDs.
  • To compare air concentration data obtained from PRCs-corrected PSDs with active air sampling methods.

Main Methods:

  • Polyethylene-based passive air samplers (PSDs) were loaded with performance reference compounds (PRCs).

Related Experiment Videos

  • PSDs were deployed in a wind tunnel under controlled low and high wind speed conditions.
  • PRC loss rates and sampler/air partition coefficients were determined to calculate air concentrations.
  • PSD-derived air concentrations were compared with those obtained from active air samplers.

    • Main Results:

    • PRCs were reproducibly loaded into PSDs, with minimal variation for less volatile compounds.
    • PRC loss rate constants generally increased with higher wind speeds.
    • Higher sampler/air partition coefficients correlated with decreased PRC loss rates.
    • Air concentrations calculated using PRC-corrected PSDs closely matched measurements from active samplers.

    Conclusions:

    • Performance reference compounds (PRCs) effectively account for wind speed variations in passive air sampling.
    • The use of PRCs enhances the accuracy and reliability of polyethylene-based passive air samplers.
    • PRC-corrected passive air sampling provides a viable and accurate alternative to active sampling for air concentration measurements.