The Development of Planar Chromatography in 1980–1990 and 2000–2010 (the Scientometric Study)

JPC – Journal of Planar Chromatography – Modern TLC - The scientometric study of the tendencies of change of basic chromatographic characteristics has been carried out based on the...     

Use of a moving sorbent for the concentration of heavy impurities

Conclusions A method was proposed, and verified experimentally, for the concentration of heavy impurities using a moving sorbent.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 3, pp. 686–687, March, 1967.     

Combined partition-chromatographic methods

Summary The possiblities of partition—chromatographic methods in the analysis of organic compounds are discussed and some new versions of the methods are mentioned.The principles and optimum experimental conditions of some common versions of the partition-chromatographic methods. have been discussed in a recent paper of the same authors [20].     

Methode zur Bestimmung des Verzweigungrades in Poly?thylenimin

Ohne Zusammenfassung     

Nitrous Oxide as Carrier Gas in Capillary Gas-Liquid Chromatography

On use of nitrous oxide as carrier gas the retention factors of the chromatographed compounds decrease linearly with increasing average column pressure. Other retention characteristics (relative retention, retention index) change linearly. This effect was demonstrated by using a capillary column coated with nonpolar polydimethylsiloxane phase SE-30. As shown for capillary GLC the linear correlation is valid for the same column:k_i(G₁,P₁) = A k_i(G₂, P₂) + B, where k_i(G₁, P₁) and k_i(G₂,P₂) are the retention factors of compound i at average column pressures P₁ and P₂ when using carrier gases G₁ and G₂, respectively; A and B are coefficients.