Instrument - High Resolution Time-of-Flight Aerosol Mass Spectrometer

Short name:

Full name:
High Resolution Time-of-Flight Aerosol Mass Spectrometer

What is being measured:

Sampling Protocol:

Aerodyne Research Inc.


Instrument year :
None specified

Data recording software:
ToF-AMS DAQ 4.024beta

Data analysis software:
SQ 1.62A, PIKA 1.22A

Raw data time resolution:
1 minute

Analysis data averaging:
1 min

Detection limit:
0.003 μg/m3

Sensitivity to temperature (and correction method, if applicable): :

Sensitivity to relative humidity (and correction method, if applicable): :

Sampling method:
Direct sampling

Sample preparation method:

Sample residence time (chamber to instrument) (seconds):

Length of tubing (cm):

Instrument flow rate:

Tubing inner diameter:

Tubing material:
Stainless Steel

Chemical identification method:
Mass spectrometer with electron impact ionization.

Data analysis method:

Quantification method:

Calibration method:
Ionization efficiency and relative ionization effeciencies of the instrument are calibrated with pure 300nm ammonium nitrate particles and pure 300nm ammonium sulfate particles every other week.

Calibration drift estimate:
Low (on the order of weeks)

Calibration schedule:
As Needed

Uncertainty estimation method:
By filter sampling, and from the analysis software.

Known interferences:
Air and inorganic salts can interfere with organic signals Collection efficiency issue: particle can bounce off from the surface of the vaporizer

Link to supplemental information:

Additional notes:

Measurement uncertainty:

Measurement units: