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Validation of atmospheric aerosols parallel sampling in a multifold device
C M Oliveira1, M F Camões, P Bigus
1Centro de Química Estrutural-Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisboa, Portugal, cmoliveira@fc.ul.pt.
Environmental Monitoring and Assessment
|May 28, 2015
Summary
This study validated a multifold device for collecting particulate matter (PM10). The validated system ensures equivalent aerosol sampling for accurate analysis of inorganic anions like sulfate and nitrate.
Area of Science:
- Environmental Science
- Analytical Chemistry
- Atmospheric Science
Background:
- Particulate matter (PM10) monitoring is crucial for air quality assessment.
- Accurate sampling methods are essential for reliable chemical analysis of aerosols.
- Existing sampling devices may have limitations in ensuring sample equivalence.
Purpose of the Study:
- To validate a novel multifold sampling device for PM10 collection.
- To assess the metrological compatibility of samples collected across multiple channels.
- To ensure the reliability of inorganic anion determination in aerosols.
Main Methods:
- Utilized an active sampling system with a PM10 inlet and a six-channel multifold device.
- Collected aerosols on filters under controlled flow conditions.
- Extracted water-soluble fractions and quantified inorganic anions (Cl-, NO3-, SO42-) using ion chromatography (IC).
Main Results:
- Validated the equivalent sampling performance of the multifold device.
- Demonstrated metrological compatibility of ion mass results across different filters.
- Confirmed that the device produces equivalent samples when ion mass differences are within expanded uncertainty.
Conclusions:
- The studied multifold device is validated for reliable and equivalent PM10 sampling.
- This method ensures accurate quantification of inorganic anions in aerosols.
- The validated system supports robust air quality monitoring and research.
