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New type of Add-on Monitor for Continuous PAH Nano Particles Surface SOOT by Hans Grimm

International Sales Meeting 2008. New type of Add-on Monitor for Continuous PAH Nano Particles Surface SOOT by Hans Grimm. International Sales Meeting 2007. AGENDA Motivation Technical Solution Specification Application Examples. International Sales Meeting 2007.

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New type of Add-on Monitor for Continuous PAH Nano Particles Surface SOOT by Hans Grimm

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  1. International Sales Meeting 2008 New type of Add-on Monitor for Continuous PAH Nano Particles Surface SOOT by Hans Grimm

  2. International Sales Meeting 2007 AGENDA Motivation Technical Solution Specification Application Examples

  3. International Sales Meeting 2007 Apart from the PM values and the Size Distribution there is a growing interest to get a deeper insight in the composition of dust. Chemical analysis requires a lot of time, is expensiv and very often complicated. Therefore sensors are needed to provide fast, reliable and unexpensive data.

  4. What are PAH´s PAH: Polycyclic Aromatic Hydrocarbons PAHs are organic molecules consisting of between 2 and 6 Benzene rings. PAHs are solids at room temperature Almost all five-ring compounds are particulate bound

  5. Typical PAH´s

  6. Why measure PAH ? • PAH are known or suspected to be carcinogenic • Particle bound PAH are attached to small particles • Obtain additional information about particles in a size below 250 nm • Sources are • natural: volcanoes and natural fires • Anthropogenic: combustion, vehicle exhaust, cigarette and wood smoke,

  7. New speciation technologies • Particle bound PAH • Soot Particle

  8. Measuring Principle The sample flows continuously into the PAH sensor and through the excimer- lamp ionization region. Here particle-bound PAH molecules are ionized by photoelectric effect and loose an electron. The charged particles are captured on a filter in an electrometer. The flow of electrons to neutralize the particles for a current which is corllated to the particle concentration.

  9. Installation in Environcheck #107 Sensor module

  10. #130 PAH sensor installed in #365

  11. #130 PAH sensor attached to #107

  12. PAH-Data

  13. # 130 Specifications Measurement principle: Photoionisation for detection of particle-bound PAHs Range: max. 0 to 5000 fA Substance sensitivity: ~ 1 ng/m3 (to be verified) Data rate: < 6 s to 2h Air flow: 1.2 l/min (external) Pressure range: 1013 ± 100 mbar User interface: RS-232 / 1-Wire / I2C Analog output: 0 to 5 V (1 to 4 V = 0 to 500 fA or 0 to 5000 fA) Dimensions (LWH): 240 x 75 x 75 mm Weight: 1.8 kg Power requirements: 18 VDC (nominal), max. 1.2 A (Peak)

  14. PAH Data from Hallein/Austria

  15. PAH Data from Hallein/Austria

  16. Smoke Application The „smoke chamber“: - A room with ~ 15 m3 filled up with cigarrette smoke during the coffee brake - Windows opened for continous dilution over the night period

  17. PAH Smoke Results total Ultrafine < 350 nm PM 10 / PM 2.5 / PM 1.0 Pressure total > 300 nm PAH rel.humidity Dp mean temperature

  18. New sensors integrated in #365

  19. The world-wide first PORTABLE nanoparticle detector for aerosol exposure monitoring ! *Patent by A. Schmidt-Ott (TU-Delft), H. Burtscher (FH Aargau)

  20. The world-wide first PORTABLE nanoparticle detector for aerosol exposure monitoring ! • total number concentration • total surface area • mean diameter Dp • the surface area of particles deposited in the lung* *Patent by A. Schmidt-Ott (TU-Delft), H. Burtscher (FH Aargau)

  21. NEW-NanoCheck* conductivity measurement faraday cup electrometer electrical, unipolar diffusion charger *Patent by A. Schmidt-Ott (TU-Delft), H. Burtscher (FH Aargau)

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