BUCHI NIRCal - Manual (Page 274)

NIRCal 5.5 Software Manual
274 NIRCal 5.5 Manual, Version A
4.3.1 Temporary Settings
Open the folder Matrices in the NIR-Explorer. Right clicking the mouse on the appropriate matrix name
opens a pop-up menu. Clicking on Rename enables the user to change the name of the matrix.
4.3.2 Permanent Settings
In order to change the names permanently it is necessary to perform the changes in the registry
settings.
HKEY_CURRENT_USER\Software\Buchi\NIRCAL\Terminology
When performing the changes (including All Factors, etc.) the name convention will be changed
permanently and will be used for the NIR-Explorer, tables and graphics.
4.4 Characteristic absorbance table
This absorbance table is published for food. It can be used also for chemicals. Because the matrix is
different the absorptions can be slightly different.
Wavelength
[nm]
Wavenumber
[cm
-1
]
Chemical bonds Product Example
1000 10000 O-H str.second overtone ArOH
1015 9852 2x C-H str.+3x C-H def. CH3
1020 9804
2x N-H str.+2x amide I protein
N-H str.second overtone
ArNH2
1030 9709 RNH2
1037 9643 2x C-H str.+2x C-H
def.+(CH2)n oil
1053 9497 CH2
1060 9434 N-H str.second overtone RNH2
1080 9259
2x C-H str.+2x C-C str.
benzene
1097 9116 cyclopropane
1143 8749
C-H str.second overtone
aromatic
1152 8681 CH3
1170 8547 HC=CH
1195 8368 CH3
1215 8230 CH2