MON20/20 Software for Gas Chromatographs User Manual
OCTOBER 2010 3-9000-745
B-5
where
The percent deviation of new RF average from old RF average is
calculated in the following manner:
where the absolute value of percent deviation for alarm has been
previously entered by the operator.
Calculation in mole percent w/o normalization
Once response factors have been determined by the controller or entered
by the operator, component concentrations are determined for each
analysis using the following equations:
where
RFAVGnArea or height average response factor for component n.
RFiArea or height response factor for component n from the calibration
run.
kNumber of calibration runs actually used to calculate the response
factors.
or
CONCnConcentration of component n in mole percent.
AREAnArea of component n in unknown sample.
ARFnResponse factor of component n calculated from area of calibration sample.
Units are area per mole percent.
HtnPeak height of component n in unknown sample.
HRFnResponse factor of component n calculated from peak height of calibration
sample. Units are height per mole percent.
deviation RFnew RFold
–
RFold
----------------------------------- 100×=
CONCn
Arean
ARFn
---------------
=CONCn
Htn
HRFn
--------------
=