Metrohm 790 Personal IC - Manual (Page 126)

4.4 Methods
790 Personal IC
117
Peak table
The following parameters can be selected for peak table output with
determination results:
Quantification method Selection of the method to calculate concentra-
tions of components:
Response normalization
The method normalizes the sum of responses
for all peaks of the chromatogram to the
NORM
factor entered in the Total % for normali-
zation field:
R
i
% = NORM • R
i
/ R
i
.
All peaks are calculated and reported no matter
whether they have been recognized or not.
The peak table includes the following columns:
number , retention time , area + area% or height +
height% , name
Normalized concentration
The method normalizes the sum of absolute
concentrations for all peaks of the chroma-
togram to the NORM factor entered in the Total
% for normalization field:
C
i
% = NORM • W
i
(R
i
) / W
i
(R
i
)
As long as no universal component is defined,
only peaks with non-zero concentrations are
listed.
The peak table includes the following columns:
number , retention time , height , area ,
response factor , concentration% , name
Absolute concentration
This quantification method reports raw quantity
(absolute concentration) of the component that
is calculated directly from the calibration for-
mula:
Q
i
= W
i
(R
i
) / V'
As long as no universal component is defined,
only peaks with non-zero concentrations are
listed.
The peak table includes the following columns:
number , retention time , height , area ,
response factor , concentration , concentration% ,
name
Relative concentration
This quantification method uses the internal
standard method to calculate the relative con-
centrations of the components. For this proce-
dure, a Standard component must be selected