DESCRIPTION OF THE RETENTION BEHAVIOR AND CHROMATOGRAPHIC MEASUREMENT OF THE CHANGE IN pKa WITH TEMPERATURE OF A DIASTEREOMERIC PAIR OF ISOLEUCINE DERIVATIVES

2002 ◽  
Vol 25 (5) ◽  
pp. 705-715 ◽  
Author(s):  
Andrew Clausen ◽  
Thomas Dowling ◽  
Gary Bicker
2001 ◽  
Vol 14 (4) ◽  
pp. 277-282 ◽  
Author(s):  
Nada Perišić-Janjić ◽  
Lidija Jevrić ◽  
Gordana Bončić-Caričić ◽  
Bratislav Jovanović

2000 ◽  
Vol 65 (1) ◽  
pp. 47-57 ◽  
Author(s):  
Pavel Hradil ◽  
Jiří Votinský ◽  
Karel Komárek ◽  
Vítězslav Zima ◽  
Jaroslava Kalousová ◽  
...  

Gas chromatographic measurement of specific retention volumes of vapours of selected groups of organic compounds has been used to determine differential molar enthalpy of adsorption of their molecules on the surface of layered vanadyl phosphate substituted with ferric ions having the composition of [Fe(H2O)]0.20(VO)0.80PO4. Various types of bonds of the molecules to the surface of the layered adsorbent including their probable orientation with respect to the layers have been discussed. It was observed a dependence of the specific peak elution volume and shape of chromatographic peak on the sample size in the cases of those compounds whose molecules are chemically bound to the adsorbent surface. A connection is pointed out between the adsorption strength of the organic molecules on the layered adsorbent and the tendency of the system to undergo intercalation reaction.


2021 ◽  
Vol 134 ◽  
pp. 103641
Author(s):  
Qingan Xiang ◽  
Jian Deng ◽  
Juan Du ◽  
Jinsheng Bi ◽  
Baowen Chen ◽  
...  

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