Thermal and Hydrothermal Treatment of Silica Gels as Solid Stationary Phases in Gas Chromatography

Table 3

Separation factor and resolution of some solute pairs on the untreated and modified silica samples.

Column	Paraffin		Aromatic		Alcohol
	C6, C7		Benzene, toluene		C6-OH, C8-OH
	𝛼	𝑅	𝛼	𝑅	𝛼	𝑅
Si	1.237	3.132	1.183	2.732	NA	NA
SiC500	1.580	3.918	1.41	2.110	NA	NA
SiC1000	1.029	1.286	1.097	2.050	NA	NA
SiHT	1.081	NA	1.070	1.070	NA	NA
SiCHT	1.047	1.536	1.010	1.220	NA	NA