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

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

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

Typical PAH´s

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,

New speciation technologies - Particle bound PAH - Soot Particle

Measuring Principle The sample flows continuously into the PAH sensor and through the excimer- lamp ionization region. particle-bound PAH molecules are ionized 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.

Installation in Environcheck #107 Sensor module

#130 PAH sensor installed in #365

#130 PAH sensor attached to #107

PAH-Data

Measurement principle: Photoionisation for detection of particle-bound PAHs Range: max. 0 to 5000 fA Substance sensitivity: ~ 1 ng/m 3 (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 / I 2 C 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) # 130 Specifications

PAH Data from Hallein/Austria

The „smoke chamber“: - A room with ~ 15 m 3 filled up with cigarrette smoke during the coffee brake - Windows opened for continous dilution over the night period Smoke Application

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

New sensors integrated in #365

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

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

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