Chromatographic Separation of the Nuclear Spin Isomers of Hydrogen and Deuterium Below 60 K

Capillary gas adsorption chromatography

“…presented in Figure 2. Further studies have revealed that nuclear protium and deuterium isomers can be separated faster if the column temperature is lowered to 47 K. 102 Oxygen isotopes (1602 and 1802) were separated by Bruner, Cartoni, and Liberti90 on a capillary adsorption column (see Figure 1690). The adsorption layer on the inside glass column walls was generated by etching with 20% NaOH solution at 100 °C for a few hours.…”

Gas chromatography

“…Open tubular columns have been applied to the separation of steroids (711, 712); aliphatic amines using glass capillary columns (563); methylphenols (462) and the lower free fatty acids (461) by adding orthophosphoric acid to the liquid phase to reduce peak tailing; the nuclear spin isomers of hydrogen and deuterium below 60 °K (771); dieldrin in butter, cognac aroma in head space gases, and automobile exhaust using appropriate injection techniques (381); the gas phase of tobacco smoke (59); and the rapid analysis of hydrocarbons in gasoline (789).…”