Instrument - chemical ionization mass spectrometer w/ CF3O- reagent ion
Short name:
CF3O- CIMS: negative mode, raw spectra
Full name:
chemical ionization mass spectrometer w/ CF3O- reagent ion
What is being measured:
oxidized VOCs (especially alcohols, hydroperoxides, acids, nitrates)
Sampling Protocol:
Online
Manufacturer:
Varian
Model:
1200
Instrument year
:
None specified
Data recording software:
Varian workstation
Data analysis software:
Matlab
Raw data time resolution:
0.125 s
Analysis data averaging:
0.5 s averages of raw data
Detection limit:
100 ppt
Sensitivity to temperature (and correction method, if applicable):
:
minor
Sensitivity to relative humidity (and correction method, if applicable):
:
Compound-dependent
Sampling method:
Direct sampling
Sample preparation method:
Sample residence time (chamber to instrument) (seconds):
Length of tubing (cm):
100
Instrument flow rate:
2 lpm
Tubing inner diameter:
0.16 in
Tubing material:
FEP Teflon
Chemical identification method:
Data analysis method:
Quantification method:
Baseline correction, dilution correction
Calibration method:
N/A
Calibration drift estimate:
Low (on the order of weeks)
Calibration schedule:
As Needed
Uncertainty estimation method:
Uncertainties are estimated from propagating uncertainties in the steps of the absolute calibrations
Known interferences:
Link to supplemental information:
St. Clair et al. (DOI 10.1063/1.3480552)
Additional notes:
Measurement uncertainty:
+/- 50% unless otherwise noted
Measurement units:
normalized counts