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Related Experiment Videos

Phosphine sampling and analysis using silver nitrate impregnated filters.

M Demange1, J M Elcabache, M Grzebyk

  • 1Institut National de Recherche et de Sécurité, Centre de Lorraine, Département Métrologie des Polluants, Vandoeuvre-Les-Nancy, France.

Journal of Environmental Monitoring : JEM
|March 20, 2001
PubMed
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A new method effectively samples phosphine in industrial settings using silver nitrate-impregnated filters. This technique improves worker safety by accurately measuring phosphine exposure, with filters stable for over three months.

Area of Science:

  • Industrial Hygiene
  • Analytical Chemistry
  • Occupational Health

Background:

  • Monitoring phosphine is crucial for preventing accidents and controlling worker exposure in industrial settings.
  • Existing direct-reading devices are insufficient for comprehensive exposure assessment.
  • Silver nitrate-impregnated filters are known for collecting arsine, phosphine, and stibine.

Purpose of the Study:

  • To evaluate the effectiveness of silver nitrate-impregnated filters for phosphine sampling and analysis.
  • To determine optimal impregnation concentrations, detection limits, and filter retention capacities.
  • To assess potential interferences and the stability of collected samples.

Main Methods:

  • Utilized silver nitrate-impregnated filters for phosphine collection.

Related Experiment Videos

  • Employed a sodium carbonate prefilter to capture particles and arsenic trioxide.
  • Analyzed samples using ICP emission spectrometry after dissolving silver compounds in nitric acid.
  • Conducted comparative sampling in a microelectronic laboratory and a fumigation chamber (130 samples).

    • Main Results:

    • Achieved a detection limit better than 1 microgram per filter.
    • Demonstrated a retention capacity exceeding 300 micrograms per filter.
    • Successfully addressed phosphine sampling in the presence of H2S, NH3, or HCl.
    • Identified limitations in sampling phosphine in atmospheres with acetylene.
    • Confirmed the stability of sampled filters and solutions for over three months at ambient temperature.

    Conclusions:

    • The developed method provides a reliable approach for phosphine sampling and analysis in industrial hygiene.
    • The method offers a low detection limit and high retention capacity, suitable for worker exposure monitoring.
    • While effective in many scenarios, challenges remain for phosphine sampling in acetylene-rich environments.