Reproducibility of temperature-programmed gas chromatographic retention indices with non-polar glass capillary columns

1983 ◽  
Vol 279 ◽  
pp. 483-492 ◽  
Author(s):  
H. Knöppel ◽  
M. de Bortoli ◽  
A. Peil ◽  
H. Vissers
Keyword(s):  
Capillary Columns ◽  
Retention Indices ◽  
Chromatographic Retention ◽  
Glass Capillary ◽  
Gas Chromatographic Retention Indices ◽  
Chromatographic Retention Indices ◽  
Glass Capillary Columns ◽  
Temperature Programmed

scholarly journals Gas chromatographic retention indices for N-substituted amino s-triazines on capillary columns - Part IV: Influence of column polarity on retention index

2003 ◽  
Vol 68 (7) ◽  
pp. 557-564 ◽  
Author(s):  
Dusan Mijin ◽  
Dusan Antonovic ◽  
Gordana Boncic-Caricic ◽  
Bratislav Jovanovic ◽  
Olga Rajkovic
Keyword(s):  
Linear Regression ◽  
Retention Index ◽  
Retention Factor ◽  
Capillary Columns ◽  
Retention Indices ◽  
Chromatographic Retention ◽  
Analyte Molecule ◽  
Alkyl Groups ◽  
Gas Chromatographic Retention Indices ◽  
Temperature Programmed

The retention index increment for the addition of a methylene group to the alkyl group of an analyte molecule is shown to be lower than 100 i.u. for N-substituted amino s-triazines. In temperature programmed gas chromatography, a linearly interpolated retention index I, determined from the linear regression equation, I = AZ + (GRF)z, with the number of atoms (Z) in the molecule as variable, was used to describe the retention of 25 N-substituted amino s-triazines, on DB-1, DB-5 and DB-WAX capillary columns divided into five series according to the similarity of the alkyl groups in the particular series. In the above equation, A is the linear regression coefficient or the retention index increment per atom addition, Z the number of C,N and Cl atoms in the molecule, and (GRF)z the group retention factor or functionality constant for functional groups in the molecule, based on the number Z. It is possible to estimate the retention indices of an unknown member of the series from the Z, A and (GRF) values.

scholarly journals Gas chromatographic retention indices for N-substituted amino s-triazines on capillary columns. Part V. Temperature dependence of the retention index

2003 ◽  
Vol 68 (11) ◽  
pp. 825-831 ◽  
Author(s):  
Dusan Mijin ◽  
Dusan Antonovic ◽  
Bratislav Jovanovic
Keyword(s):  
Temperature Dependence ◽  
Retention Index ◽  
Linear Equations ◽  
Capillary Columns ◽  
Retention Indices ◽  
Chromatographic Retention ◽  
Column Temperature ◽  
Temperature Range ◽  
Gas Chromatographic Retention Indices ◽  
Chromatographic Retention Indices

The temperature dependence of the retention index was studied for N-substituted amino s-triazines on DB-1, DB-5 and DB-WAX capillary columns within the temperature range 190?230 ?C. Two linear equations with the column temperature and its reciprocal as variables were studied. The first one shows a slightly better precision for 2,4-bis(alky lamino)-6-chloro-s-triazines and 2-alkylamino-4,6-dichloro-s-triazines while the second one shows a better precision for 2,4-bis(cycloalkylamino)-6-chloro-s-triazines.

Sign in / Sign up

Export Citation Format

Share Document