Instrument - Temperature Programmed Thermal Desorption Particle Beam Mass Spectrometer
Short name:
TPTDPBMS
Full name:
Temperature Programmed Thermal Desorption Particle Beam Mass Spectrometer
What is being measured:
Particle Chemical Composition
Sampling Protocol:
Offline
Manufacturer:
Custom
Model:
Custom
Instrument year
:
None specified
Data recording software:
Merlin and NI-DAQ with Labview recorded by MICAS-X
Data analysis software:
Raw data time resolution:
5 s
Analysis data averaging:
Detection limit:
10 ng
Sensitivity to temperature (and correction method, if applicable):
:
N/A
Sensitivity to relative humidity (and correction method, if applicable):
:
N/A
Sampling method:
Collection of 1-2 ug particles onto -40 C vaporizer
Sample preparation method:
Sample residence time (chamber to instrument) (seconds):
Length of tubing (cm):
Instrument flow rate:
Tubing inner diameter:
Tubing material:
Chemical identification method:
Thermal desorption of compounds by volatility and identification by electron impact ionization. Masses from the same compound will desorb at the same temperature.
Data analysis method:
Quantification method:
Estimated of total mass is proportional to EI signal.
Calibration method:
Calibration drift estimate:
Medium (on the order of days)
Calibration schedule:
Uncertainty estimation method:
Uncertainty is estimated to be +/- 30%, based on the assumption that electron ionization signal is proportional to total mass.
Known interferences:
Link to supplemental information:
Additional notes:
Measurement uncertainty:
All measurements from this instrument have uncertainties of 30% of absolute value.
Measurement units:
ug m^-3