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The paper deals with the behaviour of the transition metals and uranium, thorium, and cerium in thin layer chromatography. The solvents used were mixtures of halogen-hydrogen acids (HF, HCl, HBr, HI) and alcohols (methanol, ethanol, propanol-(1), butanol(1)). Cellulose powder was chosen as the...
The protonated reaction products from experiments designed to prepare dimer and tetramer of α-methylstyrene anionically have been examined by thin-layer chromatography, and have been shown to be more complex than previously predicted. The three major constituents of both systems have been...
Simple calculations show that logarithmic amplifiers for spectroscopic detectors are not normally necessary. The area of a peak measured by a detector without logarithmic amplifier differs by less than 0.3% from that measured by a logarithmic amplifier for the concentrations used in high speed...
Olefins have been found to yield spurious results when analysed on adsorptive g.l.c. columns. The cause of the anomalous chromatograms has been discovered to be molecular rearrangement of the solutes during elution, involving proton donation by the active sites on the support surface, to yield...
Clean and rapid analytical separation of microgram quantities of Ge(IV), Sn(II), Pb(II) and Zn(II), Cd(II), Hg(II) from their mixed solution has been made possible by ascending thin-layer chromatography using the solvent systems: (a)Isobutyl alcohol: Conc. HCl: Et-Me ketone and (b) Isobutyl...
Methods are described of preparing a sufficiently strong and efficient Teflon support possessing a particularly high degree of inertness to corrocive samples. The supports prepared were almost as stable as diatomite supports. One of the disadvantages of the Teflon supports is the fact that,...
It is shown that all the pentoses can be separated on a thin layer of cellulose using the solvent system butanone/acetic acid/saturated aqueous boric acid (9∶1∶1). Quantitative analysis on a microgram scale can be achieved by gas liquid chromatography using 10% silicone ester 30 on Celite as...
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