𝔖 Bobbio Scriptorium
✦   LIBER   ✦

RF values and structure of the adsorbent in thin-layer chromatography using pure solvents as the mobile phase

✍ Scribed by Andrzej Waksmundzki; Jan Róźylo

Publisher
Elsevier Science
Year
1968
Tongue
English
Weight
530 KB
Volume
33
Category
Article
ISSN
1873-3778

No coin nor oath required. For personal study only.

✦ Synopsis

The object of this paper was to investigate esperimentally the reproducibility of RF values in thin-layer chromatography, and to establish the effect of the adsorbent, the molecular structure of the solute and. the solvent on this reproducibility.

In order to solve the problem in question, silica gel adsorbents of various micro-porous structure were used in order to sliow to what extent the specific surface area of the adsorbents affected, the l?p values. For this 'purpose five typical solvents were chosen which belonged to different classes according to the classification introduced by EWELL et id. and PIMENTEL AND MCCLELLAN.

📜 SIMILAR VOLUMES

Parameters influencing theoretical deter
Parameters influencing theoretical determination of RM-values of naphthalene derivatives in thin-layer chromatography by using binary mobile phase
✍ Różyło, J. K. ;Malinowska, I. ;Gross, J. 📂 Article 📅 1980 🏛 John Wiley and Sons 🌐 English ⚖ 413 KB

The purpose of the studies being carried out is to find some regularities of a general character which determine the relationship between the structures of the chromatographed substances and the composition of the mobile phase, i.e., between the log of the partition coefficient of the sample (A,), t

Double-spot formation in the thin-layer
Double-spot formation in the thin-layer chromatography of pure fenfluramine hydrochloride and some other amines in the presence of organic solvents
✍ B. Wesley-Hadzija 📂 Article 📅 1973 🏛 Elsevier Science 🌐 English ⚖ 587 KB

Prom a number of solutions of fenfluramine hydrochloride in (a) ethanol or (b) chloroform, chromatographed on thin layers of silica gel or alumina, using the solvent systems chloroform-methanol (I : I), methanol-acetone (r : I) and chloroform-ethanol (4: I), two spots were produced, whereas solution