Discussion of adsorptive properties of column packings in gas chromatography : I. Energy properties of the material supporting liquid stationary phases
✍ Scribed by Andrzej Waksmundzki; Zdzislaw Suprynowicz; Roman Leboda
- Publisher
- Elsevier Science
- Year
- 1971
- Tongue
- English
- Weight
- 775 KB
- Volume
- 61
- Category
- Article
- ISSN
- 1873-3778
No coin nor oath required. For personal study only.
✦ Synopsis
The method for the determination of the distribution of the adsorption potential, G, was used for the estimation of the adsorption properties of chromatographic supports and adsorbents. It is suggested that the energy heterogeneity of adsorbent and support surfaces can be estimated qualitatively by the determination of the maximum (Gmsx, ) and minimum (Gmin.) values of the potential; this characteristic can also be used for the classification of supports and adsorbents. Further suggestions are made concerning the presumption that for strong energy heterogeneity of adsorbent and support surfaces, steps can appear on the adsorption isotherms due to the coexistence of surface sites which have very different values of G.
The Polish diatomite support, Diatomite D2, was investigated using several test solutes of different chemical character. The interactions of the test solutes with the surface of the support are dicussed, relating these interactions with the corresponding values of GrntLx. and Gmin..