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Bentone-34, a selective adsorbent, has been studied for use in high-performance liquid chromatography (HPLC) to separate isomeric phenoxathiin derivatives. We have compared the performance of this adsorbent in gas chromatography and liquid chromatography. We have obtained better and faster...
The chromatographic behaviour of 48 metal ions on plain and stannic arsenate papers has been studied in DMSO/1 mol dm −3 HNO 3 in (9∶1), (7∶3), (5∶5), (3∶7), and (1∶9) ratios and DMSO/8 mol dm −3 HNO 3 in (7∶3) ratio. It has been found that for K(I), Rb(I), and Cs(T) Rf=KC 1/2...
Curie-point-pyrolysis (CPP) with high-performance gasliquid chromatography is a possible means for the differentiation of bacteria. A simple inlet system is shown; it can be used for the pyrolysis of solid substances and for normal gas chromatography (for testing the column). The species of a...
A short review is given on the chromatographic processes occurring in the nature. Such processes are represented by the alteration of the composition of petroleum during its migration through earth rocks, the halochromatographic distribution of gases near oil and gas deposits as well as by other...
The solubility of inorganic substances in the developer is considered. It is compared with the chromatographic behaviour of some cations in hydrochloric acid solventsystems and with the stability constants of the chlorocomplexes of these cations. Some other aspects of chromatographic behaviour...
The choice of optimal conditions for the ninhydrin reaction detection of amino acids was studied. By increasing the temperature to 140°C it was possible to reduce the necessary reaction time to about one minute. By using a glass-bead packed bed reactor, peak broadening could be lowered to a...
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