aerosol characterisation
Aerosol aus Sprays
Please ask Dr. Wessely regarding aerosol analysis issues.
Please ask Petra Fiala regarding scanning elektron microscopy (SEM) image analysis.
aerosol generation
| kind of generator |
operation range |
sample |
dispersion result |
|---|---|---|---|
| atomizer ATM 220, Topas GmbH ATM 221, Topas GmbH AGF 2.0, Palas GmbH |
0 - 6 bar | 20 ml (solutions, emulsions, suspensions) |
aerosol (5 nm - 3 µm) |
| sedimentation shaft GRADIS, Sympathec GmbH |
10 g Pulver | aerosol (> 0.3 µm) |
|
| air jet disperser RBG 1000, Palas GmbH RODOS, Sympatec GmbH |
0 - 6 bar | 10 g Pulver | aerosol (5 nm - 1000 µm) |
| electrospray generator ESG 3480, TSI Inc. |
5 nm - 200 nm | suspensions, solutions | aerosol |
aerosol conditioning
| conditioning devices |
operation range | result | application |
|---|---|---|---|
| dilution DIL 550, Topas GmbH VKL 10, Palas GmbH |
1:10 - 1:1000 1:10 - 1:10000 |
measurable aerosol concentration | aerosol conditioning before characterisation |
| drying DDU 570, Topas GmbH |
10 nm - 10 µm |
non-condensing aerosol | aerosol conditioning before characterisation |
| neutralisation TSI 3077 (Kr85) TSI 3088 (Röntgenstrahlung) TSI 348002 (Po210) |
10 nm - 10 µm |
non-charged aerosol | aerosol conditioning before characterisation |
| classfying DMA 3071, TSI Inc. DMA 3082, TSI Inc. |
10 nm - 10 µm |
aerosol fraction of defined size | aerosol physics |
aerosol analytical techniques
| kind of measurand |
operation range |
sample size |
analytical result |
typical |
|
|---|---|---|---|---|---|
| concentration | |||||
| condensation nunclei counting (CNC) | |||||
| CPC 3775, TSI Inc. CPC 3022, TSI Inc. |
5 nm - 5 µm 0.01 - 50000 #/cm3 |
particle source |
particle number concentration |
clean room aerosols, process exhaust, indoor aerosols, work place aerosols, environmental aerosols | |
| gravimetric methods | |||||
| Gravimetry, non-fractionated | 100 nm - 20 µm 1 µg/m3 - 1 g/m3 |
particle source |
particle mass concentration |
process exhaust, indoor aerosols, work place aerosols, environmental aerosols | |
| Gravimetry, fractionated | 100 nm - 20 µm 1 µg/m3 - 1 g/m3 |
particle source |
particle mass concentration (e.g.: PM10, PM2.5) |
process exhaust, indoor aerosols, work place aerosols, environmental aerosols | |
| particle size distribution | |||||
| differential electrical mobility analyses (DEMA) | |||||
| SMPS 3934, TSI Inc. SMPS 3936, TSI Inc. SMPS 3938, TSI Inc. |
5 nm - 1 µm; 1000 - 1000000 cm-3 |
particle source (staedy-state) |
particle size distribution (Q0), electrical mobility equivalent diameter, particle number concentration | clean room aerosols, process exhaust, indoor aerosols, work place aerosols, environmental aerosols | |
| time-of-flight spectrometry (TOF) | |||||
| APS 3321, TSI Inc. | 500 nm - 20 µm; < 10000 #/cm3 |
Partikelquelle | particle size distribution (Q0), aerodynamic equivalent diameter, particle number concentration |
clean room aerosols, process exhaust, indoor aerosols, work place aerosols, environmental aerosols |
|
| gravimetric analyses (GA) | |||||
| cascade imapactor metec |
350 nm - 15 µm | particle source, 50 g powder |
particle size distribution (Q3), aerodynamic equivalent diameter, particle mass concentration |
process exhaust | |
| laser diffraction spectrometry (LDS) | |||||
| HELOS KR, Sympatec GmbH | 0.18 - 800 µm | particle source |
particle size distribution (Q3), geometric equivalent diameter, optical concentation | characterisation of powders, sprays, nebulisers, inhalers, ... | |
| aerosol charge condition | |||||
| mean particle charge | |||||
| EAD 3070, TSI Inc. | 0.002 - 400 pA | particle source | mean charge per particle | aerosol physics | |
| aerosol charge distribution | |||||
| DEMC & CPC | 5 nm - 500 nm | particle source, steady state | charge distribution | aerosol physics | |
| particle morphology, particle species, ... | |||||
| electrostatic precipitator | 10 nm - 10 µm | particle source |
aerosol sample on substrate | aerosol physics, aerosol characterisation by SEM/TEM | |
auxiliary aerosol analytical techniques
| analytical method |
operation range |
typical application |
|---|---|---|
| Bubble-Flowmeter Gilibrator 2 |
0.02 - 6 L/min | Aerosol |
| Massflowmeter TSI 40211 TSI 4040 TSI 4140 |
0.01 - 300 L/min | partikelfreie Luft |
| Rotameter | 0.01 - 300 L/min | Aerosol |
permanent experimental setups
| experimental setup |
operation range |
typical application |
|---|---|---|
| experimental setup for generation of monodisperse aerosols | 5 nm - 500 nm; 0.01 - 100000 #/cm-3 |
aerosol physics, development/validation of instruments |
| experimental setup for comparison of aerosolanalytical instruments | 5 nm - 5 µm; 0.01 - 100000 #/cm-3 |
comparison/validation of cleanroom counters, aerosol sensors, ... |
| experimental setups for spray processes characterisation | based on configuration | spray cans, nebulizer, inhalators, ... |
| experimental setups for particle release characterisation | based on configuration | determination of particle release quantities due to abrasion, sanding and cutting |
| experimental setup for the characterisation of particle shape | 50 nm - 500 nm | determination of the dynamic shape factor |