FIELD: chemistry.
SUBSTANCE: method wherein separation of a sample into separate components takes place in a capillary column with a sorbent under the effect of an ascending stream of a liquid eluent, the flow rate of which is programmed by exponential raising of pressure at the input of the column. The apparatus has a fused silica column with a sorbent, a sealed container with a liquid mobile phase, a video densitometric sensor, an inert gas preparation unit, a controlled fluidic resistor and a hollow container connected to the gas space of the sealed container with liquid eluent.
EFFECT: stabilising linear ascending speed of the liquid mobile phase in the sorbent layer and shorter analysis time.
2 cl, 1 dwg, 1 tbl
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