A new technology of gas chromatography with pressure programming of the carrier gas has been investigated and for the first in the world been proposed, based on the gradient pressure movement along the column performing the function pressure - location - time and keeping Dp constant at the ends of the chromatographic column during the whole process of analysis.
( Russia patent N 1658083 Chromatograph of A.S.Hayrapetyan )

Provision of optional conditions by means of keeping the constancy of the linear rate of an imaginary point - the sample zone undergoing analysis being transferred from the injection point to the chromatographic column outlet, with which a maximum column efficiency /Hayrapetyan's Effect/ is attained. Inventor Hairapetian A.

CHROMAB A R OGRAPHY Besides, in difference to two or multistage columns used in gas chromatographs, as in case of the analysis of natural gas under flow, it becomes possible to resolve analytically complex problems on one single column by on each component bar - focusing. Altogether this is not the only advantage of CHROMA BARO GRAPHY. On the contrary new possibilities of its modifications are opened with the aspects of synergism in the field of combined application of the moving gradients of pressure and temperature (CHROMA BAROTHERMO GRAPHY) or moving the pressure – gradient along the column simultaneously with temperature programming affected equally on all the separation column (CHROMABAROGRAPH with temperature programming ). In addition to the other advantaged of scientific value, the possibility of bar – focussing on each component may be considered to solve complex analytical problems on a singular gas chromatographic column, in difference to two or multistage columns.

Chromabarography - a new technology in Chromatography. The newest technology Chromatography - Chromabarography, that protects its flight, at the beginning of XXI century, and retardation at the beginning is baneful not only in sport, but in science and economics as well. I am sure the new technology of Chromatography - Chromabarography - will be useful not only as a high - efficiency method / Hayrapetyan's Effect / of analysis, but will also enrich it as a scientific discipline. Proposing the modern technology by "switching on" the electronic market Internet, I am ready to discuss any question in the frame of the information postulated on the server www.chromatography.da.ru http://davidashen.aua.am/science http://chromatography.da.ru