Macrocycles as components of gas-chromatographic phases |
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| Authors: | L A Kartsova O V Markova A I Amel’chenko N D Ostryanina |
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| Institution: | (1) St. Petersburg State University, Universitetskii pr. 2, 198904 Petrodvorets, Russia |
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| Abstract: | The use of crown compounds (18-crown-6, benzo-18-crown-6, dibenzo-18-crown-6, benzo-15-crown-5, dibenzo-24-crown-8, 4,13-diaza-18-crown-6,4,13-dibenzyl-diaza-18-crown-6,
and cryptand 2.2.2]) as components of stationary phases in the determination of organic compounds by gas chromatography is
studied. The polarity, selectivity, efficiency, and working temperature ranges of stationary phases based on crown ethers
and cryptand as well as conventional stationary phases for gas chromatography are compared. The influence of the type and
number of heteroatoms, the conformational lability of the cavity, and the presence of substituents on the polarity and selectivity
of the stationary phases under study is revealed. Preferable types of interactions of stationary phases containing crown compounds
with organic compounds of different classes are discussed. It is concluded that phases of the mixed type based on crown ethers
are promising for improving the selectivity and efficiency of gas-chromatographic separation |
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