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Particle air pollution monitoring with nuclear analytical techniques: challenges and opportunities

Particle air pollution monitoring with nuclear analytical techniques: challenges and opportunities. Dieter Schwela , Christine Nelima Okhoya, Andrzej Markowicz, Flora L. Santos. Sequence of events that occur during the most common type of nuclear reaction used for neutron activation analysis.

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Particle air pollution monitoring with nuclear analytical techniques: challenges and opportunities

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  1. Particle air pollution monitoring with nuclear analytical techniques: challenges and opportunities Dieter Schwela, Christine Nelima Okhoya, Andrzej Markowicz, Flora L. Santos

  2. Sequence of events that occur during the most common type of nuclear reaction used for neutron activation analysis

  3. NAA arrangement Korean Atomic Energy Research Institute

  4. NAA is applied e.g. in the fields of: • Environmental sciences • Materials research • Biology, medicine geochemistry, archeology • For the certification of standard reference materials (SRM), • As a reference method for other analytical procedures.

  5. γ-spectrum of an aerosol filter with NAA Irradiation Time: 1 min Measurement Time: 7 min Decay Time: 3 min

  6. Sources of APM pollution in Beijing as identified by NAA

  7. Sources of PM pollution in Vietnam as identified by NAA

  8. The principle of XRF and the typical XRF detection arrangement

  9. XRF spectrometer PNRI, Philippines

  10. Source apportionment of coarse (PM10-2.5) and fine (PM2.5) particulate matter in Metro Manila (XRF)

  11. Ion beam analysis methods

  12. Ion beam analysis

  13. Ion Beam Techniques of Analysis PIXE-X-rays, Al to Pb PIGE –-rays, F, Na, Al .. PESA –Particle Elastic Scattering, H RBS –Rutherford Backscatter, C, N, O Generally analysed for over 20 elements using these 4 techniques simultaneously. Multi-elemental analysis ideal for Principal Component Analysis (PCA), Positive Matrix Factorisation (PMF), Source fingerprinting and apportionment

  14. Spectra of the IBA Techniques PIXE

  15. Source apportionment of coarse and fine particulate matter from an urban site in the Wellington region (IBA)

  16. Conclusions NATs (NAA, XRF, IBA) are reliable and precise analytical techniques for the determination of multiple elements Various types of sources of particulate air pollutants are characterized by the elemental composition of the particles Knowledge of the elements in particles allows the identification of the origin of the particles Quantitative apportionment of the existing types of sources Relatively high costs of the nuclear analytical instrumentation NATs can also be used in other fields of environmental management and material testing.

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