Short name:
AMS

Full name:
Aerosol Mass Spetrometer

What is being measured:

Sampling Protocol:
Online

Manufacturer:
Aerodyne

Model:
HR-ToF-AMS

Instrument year :
None specified

Data recording software:
ToF-DAQ

Data analysis software:
Igor

Raw data time resolution:
150s

Analysis data averaging:
None

Detection limit:
3 ng/m3 for V mode; 32 ng/m3 for W mode

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

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

Sampling method:
Direct gas sampling

Sample preparation method:
None

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

Length of tubing (cm):
0.01

Instrument flow rate:
0.08

Tubing inner diameter:

Tubing material:
Copper

Chemical identification method:
EI fragmentation

Data analysis method:
The SMPS data that were recorded in scanning mode are analyzed using a custom Excel script. Particle size distribution, number/volume concentration as a function of time are displayed. Custom wall loss fitting time is available to do wall loss correction as needed.

Quantification method:
For V mode, ToF calculation; For W mode, the software dissects the measured peaks to several peaks of known compounds around there (precision to 0.0001 m/z) and does the statistics with time or run stamps.

Calibration method:
Size-selected NH4NO3 particles are measured using two modes. ToF Ion Efficiency factors will be calculated based on the comparison between the data from SMPS and AMS.

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

Calibration schedule:
Monthly

Uncertainty estimation method:
Duplication of the same experimental conditions.

Known interferences:
CO2

Link to supplemental information:

Additional notes:

Measurement uncertainty:

Measurement units: