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Related Experiment Videos

Global pilot study for persistent organic pollutants (POPs) using PUF disk passive air samplers.

Tom Harner1, Karla Pozo, Todd Gouin

  • 1Science & Technology Branch, Environment Canada, 4905 Dufferin Street, Toronto, ON, M3H 5T4, Canada. tom.harner@ec.gc.ca

Environmental Pollution (Barking, Essex : 1987)
|April 18, 2006
PubMed
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Polyurethane foam disks effectively monitored global persistent organic pollutants (POPs). This pilot study found varying POP concentrations across sites, with endosulfan showing the highest levels.

Area of Science:

  • Environmental Chemistry
  • Atmospheric Science
  • Pollution Monitoring

Background:

  • Persistent Organic Pollutants (POPs) pose global environmental risks.
  • Monitoring POPs requires robust and logistically feasible methods.
  • Existing monitoring networks face challenges in global coverage and data consistency.

Purpose of the Study:

  • To evaluate the logistical feasibility of a global monitoring network for POPs using Polyurethane foam (PUF) disks.
  • To assess the spatial distribution and concentration of specific POPs at global background sites.
  • To validate PUF disk performance against established air sampling techniques.

Main Methods:

  • Deployment of Polyurethane foam (PUF) disks at global background monitoring locations.
  • Analysis of Polyurethane foam disks for alpha-Hexachlorocyclohexane (alpha-HCH), gamma-Hexachlorocyclohexane (gamma-HCH), chlordane, dieldrin, and endosulfan.

Related Experiment Videos

  • Comparison of PUF disk-derived air concentrations with high-volume air sampling data.
  • Utilized air mass back-trajectory analysis to infer pollutant sources.

    • Main Results:

    • Polyurethane foam disks demonstrated good agreement with duplicate samplers and high-volume data.
    • Alpha-Hexachlorocyclohexane (alpha-HCH) showed uniform concentrations at temperate and arctic sites, with lower levels elsewhere.
    • Endosulfan exhibited the highest concentrations, ranging from tens to hundreds of pg/m3, indicating its widespread presence.
    • Dieldrin concentrations were elevated in Bermuda, potentially due to advection from Africa and the US.

    Conclusions:

    • Polyurethane foam disks are a viable and logistically sound tool for global POPs monitoring.
    • The study successfully identified spatial patterns and concentration ranges for several key POPs.
    • The findings support the development of a global monitoring network for persistent organic pollutants.