Method for chromatographic analysis of substance

FIELD: chemistry.

SUBSTANCE: method for chromatographic analysis of a substance involves exposing the separated mixture of substances carried by a carrier through a chromatographic column to acoustic oscillations. Before chromatographic analysis, a liquid nematic crystal is deposited on the wall of the chromatographic column, where the said crystal is directed across the propagation of sound oscillations.

EFFECT: high efficiency of separating an analysed mixture of substances into components using sound waves.

1 dwg

 

Method of chromatographic analysis of a substance relates to methods of separating mixtures of substances intended for analysis. These methods are usually based on the distribution of substances in the chromatographic column between the two phases is fixed (sorbent) and mobile (Ellenton).

But there are other methods of chromatographic analysis of substances, for example, based on the sound or acoustic separation of substances (U.S. Patent No. 4280823, IPC B01D 51/08, 1981 and UK application No. 2059796, IPC B01D 51/08, 1981). The sound vibrations propagate along the chromatographic column.

Closest to the patented method is a method of chromatographic analysis of substances, which consists in the effect of sound (acoustic) variations on a partial mixture of substances which are carried by the gas (carrier) through a chromatographic column (Patent RF №2156457, MPK7 G01N 30/00, op. 20.09.2000).

The new method also lies in the effect of sound vibrations on a partial mixture of substances which are carried by the gas (carrier) through the chromatographic column.

New it is that on the wall of the chromatographic column prior to analysis applied nematic liquid crystal, the molecules of which are oriented transversely to the propagation of sound vibrations.

The drawing shows the circuit implementation of the method. It shows the chromatography is rapicetta column 1 of circular cross section, on the radial walls which are elongated molecules of the nematic liquid crystal 2, which is perpendicular along the column directional acoustic waves 3.

The molecules of the nematic 2, being attached radially to the circumferential wall of the chromatographic column 1 and, therefore, oriented transversely to the movement of the components of the mixture of substances in the flow of media through the chromatographic column 1 and the partial acoustic waves 3, its free ends of the hook passing molecules of substances in varying degrees in accordance with the properties of substances different in different substances, optionally separated, which increases the efficiency of the separation.

The technical result of the new method of chromatographic analysis of a substance is the higher efficiency of separation of sound waves analyzed mixtures into components.

Method of chromatographic analysis of a substance, which consists in the influence of acoustic vibrations on a partial mixture of substances, carried by the carrier through the chromatographic column, wherein prior to analysis on the walls of the chromatographic column put a nematic liquid crystal, oriented transversely to the propagation of sound vibrations.



 

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